JP2009262748A - Vehicular chemical heat storage system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular chemical heat storage system can consistently execut heat storage for a long period of time, and heat an object to be heated at a high temperature. <P>SOLUTION: The vehicular chemical heat storage system 10 includes a reactor 94 having a built-in chemical heat storage material which performs a dehydration reaction by the exhaust heat of an internal combustion engine mounted on a vehicle to store heat, and radiates the heat by the hydration reaction, a condenser 106 for condensing steam emitted during the dehydration reaction from the reactor 94, and an evaporator 124 for feeding steam for the hydration reaction to the reactor. When the heat is radiated from the chemical heat storage material in the reactor 94, the evaporator 124 feeds steam to the reactor 94 by evaporating water by the heat of the adsorption of a first adsorber 40 or a second adsorber 44 constituting a vehicular air-conditioner 38 as an adsorption type heat pump air-conditioner as a heat source. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular chemical heat storage system for effectively using heat generated with traveling of a vehicle.

  An electric vehicle includes an auxiliary engine for charging a driving battery in an emergency, a combustor that heats hot water for heating, and a heat accumulator that stores heat using high-temperature hot water. A technique for preheating the auxiliary engine by supplying hot water stored in the heat accumulator to the auxiliary engine is known (for example, see Patent Document 1).

Also, in a hybrid vehicle that combines engine drive and motor drive, with a heat accumulator that keeps some of the coolant warm, and when the coolant temperature in the heat accumulator is higher than the coolant temperature in the engine when the vehicle starts A technique is known in which cooling water is supplied to an engine from a heat accumulator to warm up the vehicle and the vehicle is driven by a motor during the current period (see, for example, Patent Document 2).
JP-A-9-11731 JP 2002-122061 A

  However, in the conventional technology as described above, since a sensible heat accumulator that stores heat as sensible heat is used, the heat storage state cannot be maintained for a long period of time, and more than the temperature of the stored hot water or cooling water. Can not be heated to the temperature of.

  An object of the present invention is to obtain a vehicular chemical heat storage system that can stably store heat for a long period of time and can heat a heating target that requires a high temperature in consideration of the above facts.

  A chemical heat storage system for a vehicle according to a first aspect of the present invention includes a reactor having a built-in chemical heat storage material that stores heat by performing a dehydration reaction by exhaust heat of an internal combustion engine mounted on the vehicle and dissipates heat by a hydration reaction; A water condensing part for condensing water vapor released from the reactor along with the dehydration reaction; a water condenser for condensing water vapor released from the reactor containing the adsorbent along with the dehydration reaction; An adsorbent heat pump type air conditioner including an adsorber, an adsorbate evaporating unit for evaporating adsorbate adsorbed by the adsorber, and an adsorbate condensing unit desorbed from the adsorber to condense the adsorbate A water evaporation unit for supplying water vapor for the hydration reaction to the reactor by evaporating water using the heat of adsorption generated in the adsorber of the adsorption heat pump type air conditioner as a heating heat source With There.

  In the chemical heat storage system for a vehicle according to claim 1, the chemical heat storage material of the reactor stores heat while causing a dehydration reaction when the exhaust heat of the internal combustion engine is applied. When releasing this heat, the adsorbate evaporated by the lower heat source in the adsorbate evaporation section of the adsorption heat pump type air conditioner is supplied to the adsorber. Then, adsorption heat is generated in the adsorber, water is evaporated in the water evaporation section by this adsorption heat, and the obtained water vapor is supplied to the reactor. As a result, a hydration reaction of the chemical heat storage material occurs, and the heat stored in the chemical heat storage material is released.

  Here, in this chemical heat storage system for vehicles, since a chemical heat storage material that stores and releases heat by dehydration and hydration reactions is used, heat can be stored stably over a long period of time. In this vehicle chemical heat storage system, the adsorption heat pump type air conditioner, which is a vehicle air conditioner, is used as a heat pump to secure the latent heat of vaporization in the evaporator. For example, water is evaporated at the ambient temperature. Compared with the configuration, the water vapor pressure (amount) supplied from the evaporation section to the reaction section can be increased.

  Thus, in the vehicle chemical heat storage system according to the first aspect, heat can be stably stored over a long period of time, and heating of a heating target requiring high temperature is possible. Moreover, water vapor can be supplied from the evaporation section to the reactor, for example, even in a low temperature environment without providing a dedicated heat pump in the vehicle chemical heat storage system.

  A chemical heat storage system for a vehicle according to a second aspect of the present invention is the chemical heat storage system for a vehicle according to the first aspect, wherein the steam system that communicates the reactor, the water condensing unit, and the water evaporating unit is large in advance. The pressure is reduced to less than atmospheric pressure.

  In the vehicular chemical heat storage system according to the second aspect, since the communication portion of the reactor, the water condensing unit, and the water evaporation unit, that is, the moving range of the water vapor is reduced, evaporation of water in the water evaporation unit is promoted.

  A chemical heat storage system for a vehicle according to a third aspect of the invention is the chemical heat storage system for a vehicle according to the first or second aspect, wherein the exhaust heat of the internal combustion engine is stored in the reactor during travel of the vehicle, The apparatus further includes a controller that controls the adsorption heat pump type air conditioner so that adsorption heat of the adsorber is transmitted to the water evaporation unit when the vehicle is started.

  In the vehicle chemical heat storage system according to claim 3, the control device stores heat in the chemical heat storage material of the reactor when the applied vehicle is running, and controls the adsorption heat pump type air conditioner when starting the vehicle. Then, the adsorption heat of the adsorber is transmitted to the evaporation section. Then, water vapor obtained by evaporating water in the water evaporation section is supplied to the reactor, and the chemical heat storage material in the reactor dissipates heat, whereby the object to be heated is heated. Accordingly, for example, in a low temperature environment, a heating target that requires heating or temperature rise can be heated and raised in a short time.

  A chemical heat storage system for a vehicle according to a fourth aspect of the present invention is the chemical thermal storage system for a vehicle according to the third aspect, wherein the adsorption heat pump type air conditioner has at least two pairs of the adsorber and the adsorbate evaporation unit. The control device controls the adsorption heat pump type air conditioner so that the two adsorbers desorb the adsorbate when the vehicle is stopped, and when the vehicle is started, The adsorption is performed such that the adsorbate evaporation section for another adsorber is heated by the adsorption heat of the adsorber to evaporate the adsorbate, and the adsorption heat of the other adsorber is supplied to the water evaporation section as a heating heat source. Controls a heat pump type air conditioner.

  5. The chemical heat storage system for vehicles according to claim 4, wherein the control means stores heat in the chemical heat storage material of the reactor when the applied vehicle is running, and when the vehicle is stopped, two sets of adsorption of the adsorption heat pump type air conditioner. Desorb the adsorbent from the vessel. That is, heat is stored in the two adsorbers. Then, when the vehicle is started, the adsorption heat pump type air conditioner is controlled, and the adsorption heat generated by adsorbing the adsorbate evaporated by the lower heat source to the first adsorber is used as the second adsorption. The adsorption heat generated by transferring the adsorbate evaporated at a higher temperature (higher pressure) to the second adsorber is transmitted to the water evaporation unit. Then, higher pressure steam obtained by evaporating water at the ambient temperature in the water evaporation section is supplied to the reactor, and the chemical heat storage material in the reactor dissipates heat at a higher temperature, thereby heating the heating target. .

  Thus, in this vehicle chemical heat storage system, the adsorption heat (transmission medium) heated in two stages is supplied to the water evaporation part as a heating heat source, so that the generated water vapor pressure in the water evaporation part becomes high. Thereby, for example, in a low temperature environment, it is possible to more effectively heat and raise the temperature of a heating target that is required to be heated or raised.

  The chemical heat storage system for a vehicle according to the invention described in claim 5 is the chemical heat storage system for vehicle according to claim 3, wherein the chemical heat storage system includes at least two sets of the reactor and the water evaporation unit, The adsorption heat pump type air conditioner has at least two sets of the adsorber and the adsorbate evaporation unit, and the control device stores the exhaust heat of the internal combustion engine in the reactor when the vehicle is running, When the vehicle is stopped, the adsorption heat pump type air conditioner is controlled so that each of the two adsorbers desorbs the adsorbate, and when the vehicle is started, the adsorption heat of one of the adsorbers is controlled. Is supplied as a heating heat source to the water evaporation section for one of the reactors, the reaction heat accompanying the hydration reaction in the one reactor is supplied as a heating heat source to the adsorbate evaporation section for the other adsorber, The heat of adsorption of other adsorbers By being supplied as a heating heat source water evaporation portion of dexterity, the heat target in said other reactor reaction heat to be heated, and controls the adsorption heat pump type air conditioning system and the chemical thermal storage unit.

  In the chemical heat storage system for a vehicle according to claim 5, the control means stores heat in the chemical heat storage material of each reactor when the applied vehicle travels, and when the vehicle is stopped, two sets of adsorption heat pump type air conditioners are used. Desorb the adsorbent from the adsorber. That is, heat is stored in the two adsorbers. When the vehicle is started, the adsorption heat pump type air conditioner is controlled so that the adsorption heat generated by adsorbing the adsorbate evaporated by the lower heat source to the first adsorber is converted into the first reaction. The reaction heat of the reactor, which is generated by supplying water vapor generated in the evaporation unit to the first reactor, is transmitted to the adsorbate evaporation unit for the second adsorber. Then, the adsorbate evaporated at a higher temperature (higher pressure) in the adsorbate evaporation section is adsorbed by the second adsorber, so that a higher heat of adsorption is obtained. To the water evaporation section for the reactor. Then, higher-pressure steam obtained by evaporating water at the ambient temperature in the water evaporation section is supplied to the second reactor, and the chemical heat storage material in the second reactor dissipates heat at a higher temperature, The object to be heated is heated.

  Thus, in this vehicle chemical heat storage system, the adsorption heat (transmission medium) heated in three stages is supplied to the water evaporation unit as a heating heat source, so that the generated water vapor pressure in the water evaporation unit becomes high. Thereby, for example, in a low temperature environment, it is possible to more effectively heat and raise the temperature of a heating target that is required to be heated or raised.

  A chemical heat storage system for a vehicle according to a sixth aspect of the present invention is the chemical thermal storage system for a vehicle according to the fourth or fifth aspect, wherein the heat of the reactor for heating the heating object is transmitted between the two adsorbers. A heat recovery device for transmitting to at least one of the heat recovery devices, and the control device stops supplying water vapor to the reactor for heating the heating object after the heating of the heating object is completed; The adsorption heat pump air conditioner and the heat recovery device are controlled so that the residual heat of the reactor is transferred to one of the two adsorbers.

  7. The vehicle chemical heat storage system according to claim 6, wherein the control means desorbs the adsorbate on one of the at least two reactors by the residual heat of the reactor (second reactor) after the heating of the object to be heated. Give rise to As a result, one adsorbate is in a heat storage state (adsorbable state) and the other one adsorber is in a heat dissipation state, returning to a state in which air conditioning can be maintained by alternating operation.

  A chemical heat storage system for a vehicle according to a seventh aspect of the invention is the chemical thermal storage system for a vehicle according to any one of the fourth to sixth aspects, wherein the vehicle purifies the exhaust gas of the internal combustion engine. The exhaust catalyst is an object to be heated.

  In the vehicle chemical heat storage system according to claim 7, since the water vapor pressure generated in the water evaporation section can be increased by the heat of adsorption generated by the adsorber of the adsorption heat pump type air conditioner as described above, the chemical heat storage of the reactor High temperature heat can be obtained by heat radiation of the material. For this reason, it becomes possible to effectively heat the exhaust catalyst whose reaction activity is good at a high temperature (for example, 300 ° C.) with the heat stored in the chemical heat storage material.

  The chemical heat storage system for a vehicle according to an eighth aspect of the invention is the chemical thermal storage system for a vehicle according to any one of the first to seventh aspects, wherein the vehicle is a motor that exhibits driving force for traveling. A hybrid vehicle including a battery that supplies electric power to the motor, and the battery is the heating target.

  In the chemical heat storage system for a vehicle according to claim 8, since a battery having a low output density at a low temperature is generally heated at the time of starting the vehicle by the heat stored in the chemical heat storage material, the output density of the battery is increased. Is done. Thereby, in the vehicle to which this chemical heat storage system for vehicles is applied, the low temperature startability by the motor is improved.

  The vehicular chemical heat storage system according to claim 9 is the vehicular chemical heat storage system according to any one of claims 1 to 8, wherein the adsorption heat pump air conditioner cools the internal combustion engine. The adsorbate is configured to be desorbed from the adsorber by supplying heat from water, and the water evaporating unit uses the heat of adsorption of the adsorber as a heating heat source of water via the cooling water of the internal combustion engine. It comes to be supplied.

  In the vehicle chemical heat storage system according to claim 9, since the cooling water of the internal combustion engine is used as the heat transfer medium from the adsorption heat pump type air conditioner to the water evaporator, the heat transfer medium circulation dedicated to the vehicle chemical heat storage system is provided. It is possible to dissipate heat to the chemical heat storage material of the reactor without providing a system.

  The chemical heat storage system for vehicles according to the invention of claim 10 is the chemical heat storage system for vehicles according to any one of claims 1 to 9, wherein the water evaporating unit performs the dehydration reaction from the reactor. It also has the function of the water condenser for condensing the water vapor released along with it.

  In the vehicle chemical heat storage system according to claim 10, since the water evaporation section also functions as a water vapor condenser, in other words, since the water evaporator and the water condenser are integrated, the structure of the entire system is Simplified.

  As described above, the vehicle chemical heat storage system according to the present invention has an excellent effect that heat can be stably stored over a long period of time, and heating of a heating target requiring high temperature is possible.

  A vehicular chemical heat storage system 10 according to a first embodiment of the present invention will be described with reference to FIGS. First, the heat system of the automobile 11 as a vehicle to which the vehicle chemical heat storage system 10 is applied will be briefly described, and then the vehicle chemical heat storage system 10 will be described.

(Outline of the car)
FIG. 1 shows a schematic overall configuration of a chemical heat storage system 10 for a vehicle applied to an automobile 11 in a system configuration diagram. As shown in this figure, the automobile 11 includes an engine 12 as an internal combustion engine and a motor 14 as an electric motor. That is, the automobile 11 is a hybrid vehicle including an engine 12 and a motor 14, and further includes an inverter (power control unit) 15 for supplying electric power to the motor 14 and a battery 16. In this embodiment, a parallel-type hybrid vehicle capable of generating a driving force for vehicle travel in both the engine 12 and the motor 14 is provided.

  The automobile 11 also includes an exhaust system 18 that purifies exhaust gas from the engine 12 and discharges it to the atmosphere. The exhaust system 18 includes an exhaust line (exhaust pipe) 20 having one end connected to the engine 12 and the other end being an atmosphere open end 20A, and a catalytic converter as an exhaust catalyst provided on the engine 12 side in the exhaust line 20. 22. Although not shown, the exhaust system 18 is provided with a silencer for reducing exhaust noise on the downstream side of the catalytic converter 22 in the exhaust line 20.

  The automobile 11 further includes an engine cooling system 24 for cooling the engine 12. The engine cooling system 24 is provided in the cooling water circulation line 30 for circulating the engine cooling water in the order of the engine 12 and the radiator 28, and is a water that is provided immediately upstream of the engine 12 in the cooling water circulation line 30 and applies driving force to the engine cooling water. A pump 32 and a bypass line 34 that bypasses the radiator 28 are included. The water pump 32 in this embodiment is a mechanical pump that operates with the driving force of the engine 12.

  In this embodiment, a three-port valve 36 is provided at the junction of the bypass line 34 between the radiator 28 and the water pump 32 in the cooling water circulation line 30. In the three-port valve 36, the engine coolant flows only through the coolant circulation line 30, the state where the radiator 28 is completely bypassed by the bypass line 34, and the engine coolant flows through the radiator 28 and the bypass line 34. It is set as the structure which can take the state which adjusts a ratio.

  Furthermore, the automobile 11 includes a vehicle air conditioner 38. The vehicle air conditioner 38 is an adsorption heat pump type air conditioner. Specifically, the vehicle air conditioner 38 includes a set of a first adsorber 40 and a first evaporative condenser 42, and a set of a second adsorber 44 and a second evaporative condenser 46. Yes. Each of the first adsorber 40 and the second adsorber 44 includes an adsorbent capable of adsorbing and desorbing the adsorbate. The adsorbent adsorbs the adsorbate by the adsorbent and releases heat of desorption. The adsorbate is desorbed (stores heat) in response to the supply of heat. In this embodiment, water vapor is used as the adsorbate. Moreover, the hot springs for adsorption of the adsorbents constituting the first adsorber 40 and the second adsorber 44 are as shown in FIG.

  The first adsorber 40 and the second adsorber 44 are configured as a heat exchanger between the adsorbent and an air conditioner heat medium or engine coolant. In this embodiment, the same kind of fluid (LLC) is used as the engine coolant and the air-conditioner heat medium.

  More specifically, the vehicle air conditioner 38 is branched from the cooling water circulation line 30 of the engine cooling system 24 and introduces engine cooling water into the first adsorber 40 and the second adsorber 44. And an engine cooling water return line 50 for returning the engine cooling water from the first adsorber 40 and the second adsorber 44 to the cooling water circulation line 30. The engine coolant introduction line 48 and the engine coolant return line 50 are provided such that the first adsorber 40 and the second adsorber 44 are in parallel with the coolant circulation line 30.

  A three-port valve 52 is provided at a branch portion between the cooling water circulation line 30 and the engine cooling water introduction line 48. Further, three-port valves 54 and 56 are provided at the connection portion of the engine cooling water introduction line 48 in the first adsorber 40 and the second adsorber 44, and in the first adsorber 40 and the second adsorber 44. Three-port valves 58 and 60 are provided at a connection portion of the engine cooling water return line 50.

  The remaining ports of the three-port valves 54, 56, 58, 60 have an air conditioner heat medium circulation line 62 for circulating the air conditioner heat medium through the first adsorber 40 and the second adsorber 44. 40 and the second adsorber 44 are connected in parallel (the air conditioner heat medium can be circulated independently). The air conditioner heat medium circulation line 62 is provided with an indoor heat exchanger 64 that is a heat exchanger for air conditioning air and a driving heat medium pump 66 for circulating the air conditioner heat medium.

  During the operation (heating mode) of the vehicle air conditioner 38, either one of the first adsorber 40 and the second adsorber 44 is controlled by controlling the three-port valves 54, 56, 58, 60 by the ECU 140 described later. The engine cooling water flows through the engine cooling water introduction line 48 and the engine cooling water return line 50 (heat exchange between the engine cooling water and the adsorbent is performed). The air conditioner heat medium is circulated (heat exchange between the air conditioner heat medium and the adsorbent is performed). In this embodiment, illustration and description of the configuration for operating in the cooling mode in the vehicle air conditioner 38 are omitted.

  The first evaporative condenser 42 and the second evaporative condenser 46 respectively function as an evaporator (as an adsorbate evaporator in the present invention) that evaporates water to generate water vapor as an adsorbate, and condenses the water vapor. It is the structure which combined the function of the condenser which makes water, and the function of the water tank which stores the condensed water. Note that the vehicle air conditioner 38 may be configured by dividing some of these three functions separately.

  The first evaporative condenser 42 is communicated with a space filled with an adsorbent in the first adsorber 40 through a water vapor line 70 having an on-off valve 68. As a result, the first evaporative condenser 42 supplies water vapor for adsorption by the adsorbent of the first adsorber 40 to the first adsorber 40, and the water vapor desorbed from the adsorbent of the first adsorber 40 is supplied. It is designed to condense and store. Similarly, the second evaporative condenser 46 has a water-based space communicating with a space filled with an adsorbent in the second adsorber 44 via a water vapor line 74 having an on-off valve 72. Thereby, the second evaporation condenser 46 supplies the water vapor for adsorption by the adsorbent of the second adsorber 44 to the second adsorber 44, and the water vapor desorbed from the adsorbent of the second adsorber 44 is supplied. It is designed to condense and store. In this embodiment, the communication space between the first adsorber 40 and the first evaporative condenser 42 and the communication space between the second adsorber 44 and the second evaporative condenser 46 are reduced in pressure relative to atmospheric pressure (this embodiment Then vacuum deaeration).

  The first evaporative condenser 42 and the second evaporative condenser 46 are provided with latent heat of water evaporation or heat of condensation of water vapor by heat exchange between water or water vapor therein and cooling water as a heat exchange medium. Specifically, in the vehicular air conditioner 38, the first evaporative condenser 42 and the second evaporative condenser 46 are arranged in parallel (the cooling water can be circulated independently). And a cooling water circulation line 76 provided in. The cooling water circulation line 76 is provided with an outdoor heat exchanger (sub-radiator) 78 that is a heat exchanger between cooling water and outside air, and a driving cooling water pump 80 that circulates the cooling water.

  Three-port valves 82, 84, 86, and 88 are provided at the inlet / outlet ports of the first evaporative condenser 42 and the second evaporative condenser 46 in the cooling water circulation line 76, respectively. The remaining ports of the 3-port valve 84 provided at the outlet of the first evaporative condenser 42 are connected to the 3-port valve 138 provided at the inlet of the second evaporative condenser 46 via the first series line 90. Connected to the remaining ports. The remaining port of the 3-port valve 88 provided at the outlet of the second evaporative condenser 46 is a 3-port valve provided at the inlet of the first evaporative condenser 42 via the second series line 92. The remaining 82 ports are connected. As a result, the vehicle air conditioner 38 controls either the first evaporative condenser 42 or the second evaporative condenser 46 and the outdoor heat exchanger under the control of three-port valves 82, 84, 86, 88 by the ECU 140 described later. 78, the state in which the cooling water circulates to 78, the state in which the cooling water circulates in the order of the outdoor heat exchanger 78, the first evaporation condenser 42, and the second evaporation condenser 46, the outdoor heat exchanger 78, the second evaporation. The cooling water is circulated in the order of the condenser 46 and the first evaporative condenser 42.

  During the operation (heating mode or cooling mode), the vehicle air conditioner 38 described above adsorbs water vapor with the first adsorber 40 and desorbs (regenerates) water vapor with the second adsorber 44; The state in which the first adsorber 40 desorbs (regenerates) water vapor and the second adsorber 44 generates water vapor alternately. In the heating mode, the vehicle air conditioner 38 is configured to provide the heat released from the adsorption heat of the first adsorber 40 or the second adsorber 44 to the air conditioner heat medium for heating. Specifically, as illustrated in FIG. 3, the heating mode is set by circulating the air-conditioner heat medium in the order of the first adsorber 40 (first evaporation condenser 42) that dissipates heat of adsorption and the indoor heat exchanger 64. It is supposed to run.

  FIG. 7A shows a cycle of a heating operation (including a low temperature start operation described later) of the vehicle air conditioner 38, and FIG. 7B shows a cycle of a cooling operation. In FIG. 7A, the lower isotherm shows adsorption, and the heat of adsorption is transmitted to the indoor heat exchanger 64 through the air conditioner refrigerant, so that the air for air conditioning is heated. Yes. In FIG. 7B, the lower isotherm shows adsorption, so that the air for air conditioning for removing the water vapor required for the adsorption is deprived from the air for air conditioning so that the air for air conditioning is cooled. It has become. From FIG. 7, the cycle is configured using a range in which the linearity between the adsorption amount V [g / g] of water vapor per gram of the adsorbent and the equilibrium pressure in the adsorption isotherm shown in FIG. 8 is good. I understand.

(Configuration of chemical heat storage system for vehicles)
The vehicle chemical heat storage system 10 is applied to the automobile 11 described above, stores the exhaust heat of the exhaust system 18 as schematically shown in FIG. 5 (A), and is schematically shown in FIG. 5 (B). As described above, the heat to be heated (for example, the battery 16 and the catalytic converter 22) constituting the automobile 11 is heated by dissipating the heat stored when necessary. In this embodiment, as will be described later, the battery 16 is heated when the automobile 11 is started at a low temperature. This will be specifically described below.

The vehicle chemical heat storage system 10 includes a reactor 94 filled with a chemical heat storage material in a container. The chemical heat storage material in the reactor 94 is configured to store heat (endothermic) with dehydration and dissipate heat (heat generation) with hydration (restoration to calcium hydroxide). In this embodiment, calcium hydroxide (Ca (OH) ₂ ), which is one of alkaline earth metal hydroxides, is employed as the chemical heat storage material. Therefore, in the reactor 94, it is set as the structure which can reversibly repeat heat storage and heat dissipation by the reaction shown below.
Ca (OH) ₂ Ｃａ CaO + H ₂ O

When the heat storage amount and the heat generation amount Q are shown together in this equation,
Ca (OH) ₂ + Q → CaO + H ₂ O
CaO + H ₂ O → Ca (OH) ₂ + Q
It becomes.

  Further, the vehicle chemical heat storage system 10 includes an exhaust gas supply line 96 for introducing exhaust heat from the exhaust line 20 of the exhaust system 18, that is, high-temperature exhaust gas, to the reactor 94, and exhaust gas from the reactor 94 to the exhaust line 20. An exhaust return line 98 for returning the exhaust gas is provided. The exhaust supply line 96 is provided with an on-off valve 100, and the exhaust return line 98 is provided with an on-off valve 102. Thereby, when the on-off valves 100 and 102 are both opened, a part of the exhaust gas is circulated through the reactor 94, and when both the on-off valves 100 and 102 are closed, the exhaust gas is passed through the reactor 94. Is configured not to be introduced.

  That is, the reactor 94 in this embodiment can be regarded as a heat exchanger between a chemical heat storage material and exhaust gas. In this embodiment, the flow rate (ratio) of the exhaust gas to the reactor 94 is set so that the temperature of the chemical heat storage material becomes approximately 450 ° C. during operation of the automobile 11 (during execution of the heat storage mode). ing. This setting may be set by the balance of pressure loss between the exhaust line 20 and the reactor 94, or may be set by adjusting the opening degree of the on-off valves 100 and 102 by the ECU 140 described later. The reason why the temperature of the chemical heat storage material is set to about 450 ° C. is to suppress deterioration (such as deliquescence) of the chemical heat storage material that easily occurs at 500 ° C. or higher.

  Furthermore, the vehicle chemical heat storage system 10 includes a heating air line 104 as a heat transfer structure for supplying the heat released by the chemical heat storage material in the reactor 94 to a heating target. One end of the heating air line 104 is connected to the blower 105, and a heat exchanging part capable of exchanging heat with the chemical heat storage material in the reactor 94 and a heat exchanging part with the battery 16 as a heating target are provided in the middle part. ing. The other end of the heating air line 104 is an atmospheric open end 104A.

  Furthermore, the vehicle chemical heat storage system 10 includes a condenser 106 for condensing water vapor generated by the dehydration reaction of the chemical heat storage material in the reactor 94. The condenser 106 is communicated with the inside of the reactor 94 (the chemical heat storage material filling chamber) via a steam recovery line 110 provided with an on-off valve 108. The condenser 106 is a heat exchanger that condenses the steam by heat exchange between the steam coolant as the refrigerant and the steam flowing in from the reactor 94.

  The steam cooling liquid is circulated by the power of the liquid pump 116 through a cooling liquid circulation line 114 connecting the condenser 106 and the sub-radiator 112. As a result, the heat of condensation supplied by the condenser 106 is released by the sub-radiator 112. Since the sub-radiator 112 is a heat exchanger between the outside air and the coolant, the condenser 106 can cool the water vapor to approximately 40 ° C. or less.

  The condenser 106 described above is communicated with the water tank 122 via a water recovery line 120 provided with an on-off valve 118. The water tank 122 stores the water condensed in the condenser 106 as a liquid.

  Furthermore, the vehicle chemical heat storage system 10 is provided with an evaporator 124 as a water evaporator for supplying water vapor for causing a hydration reaction to the chemical heat storage material in the reactor 94. The evaporator 124 is communicated with the water tank 122 through a water supply line 128 provided with a water pump 126, and the inside of the reactor 94 (chemical heat storage through a water vapor supply line 132 provided with an on-off valve 130. Material filling chamber). In the vehicle chemical heat storage system 10, the water supplied to the evaporator 124 by the driving force of the water pump 126 is evaporated by heat exchange with the heat medium in the evaporator 124, and is supplied into the reactor 94. It has become.

  In this embodiment, the chemical heat storage material filling space in the reactor 94, the water recovery line 110 including the on-off valve 108, the condenser 106, the water recovery line 120 including the on-off valve 118, the water tank 122, and the water including the water pump 126. A water / steam circulation line 134 as a steam system constituted by a steam supply line 132 including a supply line 128, an evaporator 124, and an on-off valve 130 has been degassed in advance. Therefore, the reactor 94, the condenser 106, and the evaporator 124 are configured so that their internal pressures are sufficiently smaller than the atmospheric pressure when the reaction and heat exchange for performing the functions are not performed. ing.

  Thus, the evaporator 124 is configured to be able to evaporate the liquid phase water into water vapor by heat exchange between the low-temperature heat medium and the liquid phase water. In this embodiment, the evaporator 124 evaporates the water supplied from the water tank 122 using engine cooling water as a heat medium (low temperature heat source).

  Therefore, the vehicular chemical heat storage system 10 includes a low-temperature heat medium line 136 that guides engine cooling water to the evaporator 124. In this embodiment, the low-temperature heat medium line 136 is branched from the downstream side of the radiator 28 in the cooling water circulation line 30 of the engine cooling system 24, and via the heat medium flow path of the evaporator 124, the vehicle air conditioner. The air conditioner heat medium circulation line 62 of the air conditioner 38 merges upstream of the indoor heat exchanger 64 (downstream of the first adsorber 40 and the second adsorber 44). Thereby, the chemical heat storage system 10 for vehicles is comprised so that the engine cooling water (air-conditioner refrigerant | coolant) which passed the 1st adsorption device 40 or the 2nd adsorption device 44 can be introduce | transduced into the evaporator 124. FIG.

  Further, a three-port valve 138 is provided at a branch portion of the low-temperature heat medium line 136 in the cooling water circulation line 30. The three-port valve 138 has a function of opening / closing between the low-temperature heat medium line 136 and the cooling water circulation line 30 and a function of opening / closing a downstream portion of the radiator 28 in the cooling water circulation line 30.

  Furthermore, the vehicle chemical heat storage system 10 includes an ECU 140 as a control device. As shown in FIG. 2, the ECU 140 includes on-off valves 68, 72, 100, 102, 108, 118, 130, three-port valves 36, 52-60, 82-88, 136, a heat medium pump 66, and a cooling water pump 80. The blower 105, the liquid pump 116, and the water pump 126 are electrically connected to each other to control the operation thereof. The ECU 140 is also electrically connected to a start switch (operation control ECU and main controller) (not shown) of the automobile 11 and an outside air temperature sensor, etc., and each control described above based on information such as the running state of the vehicle and the outside air temperature. The target is controlled.

  In this embodiment, the ECU 140 controls each control target described above so as to execute a heat storage mode in which heat is stored in the chemical heat storage material of the reactor 94 when the automobile 11 is traveling. Specifically, as shown in FIG. 3, the on-off valves 100, 102, 108 and 118 are opened to operate the liquid pump 116, while the port on the evaporator 124 side of the three-port valve 138 and the on-off valve 130 are closed. The blower 105 and the water pump 126 are maintained in a stopped state. In addition, the port shown by the black of the valves shown to each figure has shown the state by which this port was closed. During the traveling of the vehicle, the vehicle air conditioner 38 is operated in a passenger's desired mode or auto mode. FIG. 3 shows a state where the vehicle air conditioner 38 is operated in the heating mode.

  On the other hand, the ECU 140 radiates heat from the chemical heat storage material in the reactor 94 and releases heat from the reactor 94 when the automobile 11 is started in a low temperature environment (before operation of the motor 14 at low temperature start). Each control target is controlled so as to execute a heat dissipation mode in which the heat is guided to the battery 16. Specifically, as shown in FIG. 4, the on-off valves 100, 102, 108, 118 are closed and the liquid pump 116 is stopped, while the on-off valve 130 is opened and the blower 105 and the water pump 126 are operated. The engine cooling water (air conditioner refrigerant) is circulated in the order of the first adsorber 40 (or the second adsorber 44), the bypass line 34, the evaporator 124 (low temperature heat medium line 136), and the indoor heat exchanger 64. The three-port valves 36, 54 to 60 are switched to operate the heat medium pump 66 for driving, and the three-port valves so that the cooling water is circulated to the first evaporative condenser 42 (or the second evaporative condenser 46). The valves 82 to 88 are switched to operate the driving cooling water pump 80.

  Next, the operation of the first embodiment will be described.

  In the vehicle chemical heat storage system 10 having the above-described configuration, the ECU 140 executes a heat storage mode as shown in FIG. Then, high-temperature exhaust gas is led from the exhaust line 20 of the exhaust system 18 to the reactor 94 via the exhaust supply line 96, and the chemical heat storage material in the reactor 94 is dehydrated by receiving heat supply from the exhaust gas. A reaction occurs, and the exhaust heat is stored in the chemical heat storage material.

  During execution of this heat storage mode, water vapor, which is water dehydrated from the chemical heat storage material in the reactor 94, flows into the condenser 106 through the water vapor recovery line 110, and circulates through the coolant circulation line 114 in the condenser 106. It is cooled and condensed by heat exchange with the cooling liquid. The coolant heated by the heat of condensation of water vapor is cooled by the sub radiator 112. Further, the water condensed by the condenser 106 is recovered in the water tank 122 via the water recovery line 120.

  As described above, in the automobile 11 to which the vehicle chemical heat storage system 10 is applied, the exhaust heat of the exhaust gas generated during the travel (operation of the engine 12) is stored in the reactor 94. For example, in the travel mode by the motor 14 (for example, when the engine 12 is not operated for charging the battery 16), the heat storage mode is stopped (paused).

  In the vehicle chemical heat storage system 10, the ECU 140 executes the heat radiation mode as shown in FIG. 4 when the automobile 11 is started in a low temperature environment where the outside air temperature is below a predetermined threshold. Then, the water in the water tank 122 is led to the evaporator 124 by the driving force of the water pump 126, and the air conditioner heat medium (or the second adsorber 44) of the vehicle air conditioner 38 passes through the first adsorber 40 (or the second adsorber 44). Engine cooling water) is guided to the evaporator 124 via the engine cooling water return line 50, the cooling water circulation line 30, the bypass line 34, and the low temperature heating medium line 136 by the driving force of the heat medium pump 66. By the heat exchange with the air conditioner heat medium, the water introduced from the water tank 122 is evaporated, and the water vapor generated thereby is supplied into the reactor 94 via the water vapor supply line 132.

  Then, the chemical heat storage material in the reactor 94 dissipates heat while performing a hydration reaction with the contact with water vapor. This heat is supplied to the air flowing through the heated air line 104 by the blower 105, and the battery 16 is heated by the heated air. If the ECU 140 determines that the battery 16 is sufficiently heated based on any one of, for example, the elapsed time from the start of warm-up, the temperature of the battery 16, and the temperature change of the air in the heating air line 104, the start of the motor 14 is started. The permission signal is output to the main controller or the like. That is, the warm-up of the battery 16 is terminated. Thereafter, the ECU 140 determines that the vehicle air conditioner 38 is disconnected from the evaporator 124 and that the adsorption heat of the first adsorber 40 (or the second adsorber 44) is guided to the indoor heat exchanger 64. By switching the port valves 82 to 88, the heat dissipation mode is shifted to the normal heating mode.

  Here, in the vehicle chemical heat storage system 10, heat storage and heat dissipation are performed using a chemical heat storage material that performs heat storage and heat dissipation by dehydration and hydration reactions, so that heat can be stably stored for a long period of time. Further, since the hydration reaction is caused in the chemical heat storage material by the water vapor generated by using the vehicle air conditioner 38 (pumping low temperature heat), the chemical heat storage material can be radiated at a high temperature. In particular, in the chemical heat storage system 10 for a vehicle, the water / steam circulation line 134 communicating with the reactor 94, the condenser 106, and the evaporator 124 is depressurized (vacuum degassed). Can be obtained, and a sufficient amount of heat can be obtained.

  The point which obtains high temperature from a low-temperature heat source as mentioned above is supplemented with the cycle diagram shown to FIG. 6 (A). FIG. 6A shows a cycle of the vehicle chemical heat storage system 10 at the pressure equilibrium point shown in the PT diagram. In this figure, the upper isobaric line represents a dehydration (endothermic) reaction, and the lower isobaric line represents a hydration (exothermic) reaction. As shown in this cycle, when the temperature of the chemical heat storage material is stored at about 424 ° C., the equilibrium temperature of water vapor is about 50 ° C. Since the water vapor is cooled to about 40 ° C. or less by the condenser 106, it is understood that the water vapor is condensed to become water.

  Moreover, it can be seen from FIG. 6A that the evaporator 124 generates water vapor at a pressure corresponding to the supplied temperature. That is, it is understood that the isobaric line can be shifted to the high pressure side by shifting the base point of the lower isobaric line to the high temperature side. In this case, even if the heat storage amount of the chemical heat storage material in the reactor 94 is the same, the heat radiation temperature is high. I understand that

  Then, the adsorption heat released by the first adsorber 40 by adsorbing the water vapor generated by the low-temperature heat pumped up by the first evaporation condenser 42 of the vehicle air conditioner 38 as described above is used as the low-temperature heat source in the evaporator 124. In the vehicular chemical heat storage system 10 used as an engine, for example, compared with a comparative example in which the engine cooling water in the cooling water circulation line 30 is used as a low-temperature heat source in the evaporator 124, the pressure difference from the equilibrium pressure, that is, the reaction rate of the hydration reaction. Therefore, a high heat radiation temperature can be obtained.

  That is, in the vehicular chemical heat storage system 10, by using the vehicular air conditioner 38 as a heat pump, water vapor is generated by the evaporator 124, so that, for example, when the environmental temperature is 0 ° C., water vapor of about 10 ° C. is generated in the reactor 94. Can be supplied to. In this case, the heat release temperature of the chemical heat storage material in the reactor 94 is approximately 350 ° C., and a temperature significantly higher than the environmental temperature can be obtained. Further, in the comparative example of FIG. 6B in which water vapor is generated by a heat source having an environmental temperature (0 ° C.) in the evaporator 124, the heat radiation temperature is approximately 330 ° C., whereas the vehicle air conditioner 38 is used as a heat pump. In the vehicle chemical heat storage system 10, a temperature of approximately 350 ° C. can be generated as described above, which contributes to the warming up of the battery 16.

  Thus, in the vehicle chemical heat storage system 10 that stores heat in the reactor 94 incorporating the chemical heat storage material, as shown in FIGS. 5 (A) and 5 (B), the reactor 94 is at about 424 ° C. When the heat is stored, the heat can be pumped from a low-temperature heat source of only 0 ° to obtain a high temperature of 350 ° C.

  And in the chemical heat storage system 10 for vehicles, since the air heated by the heat exchange with a high temperature chemical heat storage material in the reactor 94 is sent to the battery 16 by the blower 105, the battery 16 is heated. Thereby, the output density of the battery 16 increases. Specifically, the output density of the battery 16 has a temperature dependency as shown in FIG. 9. For example, if the temperature of the battery 16 can be raised between the ambient temperature 0 ° C. and 10 ° C., the output It can be seen that the density increases approximately 1.7 times. For example, if the temperature of the battery 16 can be raised between 5 ° C. and 10 ° C., the output density increases approximately 1.5 times. And in the chemical heat storage system 10 for vehicles which concerns on this embodiment, it has been confirmed that the temperature of the battery 16 can be raised about 10 degreeC by execution of the thermal radiation mode for a little less than 1 minute.

  Thereby, the automobile 11, which is a hybrid vehicle to which the vehicle chemical heat storage system 10 is applied, can smoothly start the motor 14 while waiting for the battery 16 to rise in temperature in the low-temperature environment. In other words, the automobile 11 can be started without relying on the engine 12 in a low temperature environment where the output density of the battery 16 is reduced.

  Next, another embodiment of the present invention will be described. Note that parts and portions that are basically the same as those in the first embodiment or the previous configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and the description thereof is omitted. May be omitted.

(Second Embodiment)
A vehicle chemical heat storage system 150 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 10 shows a system configuration diagram of a vehicular chemical heat storage system 150. As shown in this figure, the vehicular chemical heat storage system 150 according to the first embodiment is provided with an evaporator / condenser 152 in which these functions are integrated instead of the condenser 106 and the evaporator 124. It differs from the chemical heat storage system 10 for vehicles.

  The evaporator / condenser 152 is connected to a reactor 94 (chemical heat storage material filling space) via a steam line 154, and the steam line 154 is provided with an opening / closing valve 156. In this vehicular chemical heat storage system 150, the water / water vapor storage / circulation space in the reactor 94, the evaporator / condenser 152, and the water vapor line 154 are pre-evacuated in advance.

  Further, the evaporator / condenser 152 stores (holds) water condensed by heat exchange with the steam cooling liquid circulating in the cooling liquid circulation line 60 within the low temperature heating medium line. 136 is configured to evaporate water stored by heat exchange with engine cooling water flowing through 136. Therefore, the evaporator / condenser 152 is configured to have three flow paths: a water / steam storage / circulation space (heat exchange path), a steam cooling liquid circulation space, and an engine cooling water circulation space. .

  As described above, the vehicular chemical heat storage system 150 does not include the on-off valve 118, the water recovery line 120, the water tank 122, the water pump 126, and the water supply line 128. The other structure of the chemical heat storage system 150 for vehicles is the same as the corresponding structure of the chemical heat storage system 10 for vehicles.

  Accordingly, the vehicle chemical heat storage system 150 according to the second embodiment of the present invention can basically obtain the same effect by the same operation as the vehicle chemical heat storage system 10 according to the first embodiment. . Moreover, in the vehicle chemical heat storage system 150, the function of the condenser 106 and the function of the evaporator 124 are integrated into the evaporator / condenser 152, whereby the system can be simplified as a whole. In addition, since the number of objects to be controlled by the ECU is reduced, the system including the control system can be simplified.

(Third embodiment)
A chemical heat storage system 160 for a vehicle according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 11 shows a system configuration diagram of a vehicular chemical heat storage system 160. As shown in this figure, the vehicle chemical heat storage system 160 has a catalytic converter 22 instead of the battery 16 as a heating target. Therefore, the vehicle chemical heat storage system 160 includes a heating air line 162 that guides the heat (heating air) of the reactor 94 to the catalytic converter 22 by the operation of the blower 105 instead of the heating air line 104.

  In the heating air line 162, the heated air that has passed through the heat exchanging portion that exchanges heat with the reactor 94 is introduced into the catalytic converter 22 and directly exchanges heat with the exhaust catalyst. It is configured to be released to the atmosphere. The vehicle 11 according to this embodiment may be one that travels only with the power of the engine 12 without including the motor 14 and the battery 16 (hereinafter, description of the motor 14 and the battery 16 is omitted).

  In addition, the vehicle chemical heat storage system 160 that heats the catalytic converter 22 that is required to be heated to a temperature of 350 ° C. or higher is radiated at a high temperature by the chemical heat storage material of the reactor 94. The adsorbers 40 and 44 are used to increase the temperature of the air conditioner heat medium (engine cooling water) supplied to the evaporator 124.

  Specifically, the second evaporative condenser 46 constituting the vehicular chemical heat storage system 160 includes a heat medium flow path 46A (see FIG. 5) for circulating an air conditioner heat medium in addition to the water / water vapor flow path and the cooling water flow path. 13). The heat medium flow path 46A is branched from between the first adsorber 40 and the second adsorber 44 (three-port valves 58, 60) and the indoor heat exchanger 64 in the air conditioner heat medium circulation line 62, and the engine. It is provided in series at an intermediate portion of the two-stage heating line 164 joined to the cooling water introduction line 48. Thereby, the 2nd evaporative condenser 46 of the chemical heat storage system 160 for vehicles is set as the structure which can generate | occur | produce water vapor | steam also by heat exchange with an air-conditioner heat carrier and water.

  Further, a three-port valve 166 is provided at a branch portion of the second-stage heating line 164 in the air-conditioner heating medium circulation line 62, and a three-port valve 168 is provided at a junction of the two-stage heating line 164 in the engine coolant introduction line 48. Is provided.

  Further, the ECU 140 (not shown) constituting the chemical heat storage system 160 for a vehicle has a three-port valve 166, 168 added as a control target to the ECU 140 constituting the chemical heat storage system 10 for a vehicle, and the control target reduced. There is no. Therefore, the control by the ECU 140 in the vehicular chemical heat storage system 160 is different from the control in the ECU 140 of the vehicular chemical heat storage system 10.

  Although details will be described later together with the operation of the present embodiment, the ECU 140 of the vehicle chemical heat storage system 160 is configured in the same manner as in the case of the vehicle chemical heat storage system 10 with respect to control of the heat storage mode. The ECU 140 is configured to close the ports on the two-stage temperature rising lines 164 side of the three-port valves 166 and 168 in a case other than the heat dissipation mode described later including this heat storage mode. In addition, the ECU 140 of the vehicle chemical heat storage system 160 controls each control so that the two first adsorbers 40 and the second adsorbers 44 are regenerated together (heat is desorbed and stored) when the automobile 11 is stopped. The target is controlled.

  In the heat dissipation mode, the ECU 140 of the vehicle chemical heat storage system 160 causes the first adsorber 40 to generate heat of adsorption by causing the first evaporative condenser 42 to circulate cooling water having an environmental temperature. By transporting heat to the second evaporative condenser 46 via the air-conditioner heat medium, higher heat of adsorption is generated in the second adsorber 44, and this heat of adsorption is used as a heating heat source (evaporation latent heat) in the evaporator 124. As provided, each control object is controlled. The other structure of the chemical heat storage system 160 for vehicles is the same as the corresponding structure of the chemical heat storage system 10 for vehicles.

  Next, the operation of the third embodiment will be described mainly with respect to the differences from the operation of the first embodiment.

  In the vehicular chemical heat storage system 160 configured as described above, during the travel of the automobile 11, the heat storage mode is executed in the same manner as the vehicular chemical heat storage system 10 and heat is stored in the reactor 94.

  When the automobile 11 is stopped (air conditioning maintenance by the vehicle air conditioner 38 becomes unnecessary), the ECU 140 executes a regeneration mode in which both the first adsorber 40 and the second adsorber 44 are regenerated. Specifically, as shown in FIG. 12, high-temperature engine coolant is circulated to the first adsorber 40 and the second adsorber 44 via the engine coolant introduction line 48 and the engine coolant return line 50. The 3-port valves 36, 52-60, and 138 are controlled, and the 3-port valves 82 to 88 so that the cooling water circulates to the first evaporative condenser first evaporative condensers 42 and 46, and the outdoor heat exchanger 78, The cooling water pump 80 for driving is controlled. In order to execute this regeneration mode, the engine 12 may be operated, or the operation may be controlled by the ECU 140 using the water pump 32 as an electric pump. With this regeneration mode, both the first adsorber 40 and the second adsorber 44 store heat corresponding to desorption heat.

  In the vehicle chemical heat storage system 160, when the automobile 11 is started, the ECU 140 executes a heat radiation mode as shown in FIG. Specifically, the ECU 140 controls the three-port valves 82 to 88 and the driving cooling water pump 80 so that the cooling water is circulated in the order of the first evaporative condenser 42 and the outdoor heat exchanger 78. Then, as shown in FIG. 13, the ECU 140 causes the air conditioner refrigerant (engine cooling water) to pass through the first adsorber 40, the second evaporative condenser 46, the second adsorber 44, the bypass line 34, and the evaporator 124 (low temperature heating medium). The three-port valves 36, 52-60, 138, 166, 168 and the heat medium pump 66 are controlled so as to flow in the order of the line 136) and the indoor heat exchanger 64.

  As a result, first, water vapor corresponding to the environmental temperature is generated by heat exchange with the cooling water (low temperature heat source) at the environmental temperature in the first evaporative condenser 42, and this water vapor is adsorbed by the adsorbent of the first adsorber 40. The air-conditioner heat medium is heated by the heat of adsorption. When this air conditioner heat medium is led to the second evaporative condenser 46 through the air conditioner heat medium circulation line 62 and the two-stage heating line 164, the water in the second evaporative condenser 46 is exchanged with the air conditioner heat medium. Evaporated to generate water vapor having a pressure corresponding to the temperature of the air conditioner heat medium. That is, water vapor having a pressure higher than that of the first evaporative condenser 42 is generated.

  The high-pressure water vapor is adsorbed by the adsorbent in the second adsorber 44, so that the second adsorber 44 generates heat of adsorption higher than that of the first adsorber 40. Due to this heat of adsorption, the temperature of the air-conditioner heating medium led to the second adsorber 44 through the second stage temperature raising line 164 and the engine coolant introduction line 48 is further raised. When the air-conditioner heat medium heated in two stages in this way reaches the evaporator 124 via the engine coolant return line 50, the bypass line 34, and the low-temperature heat medium line 136, the evaporator is exchanged with the air-conditioner heat medium. The water in 124 is evaporated, and water vapor having a pressure corresponding to the temperature of the air conditioner heat medium is generated. The steam generated thereby is supplied into the reactor 94 through the steam supply line 132.

  Here, in the chemical heat storage system 160 for a vehicle, the temperature of the air-conditioner heat medium supplied to the evaporator 124 in two stages using the two first adsorbers 40 and the second adsorber 44 is increased. The air conditioner heat medium having a higher temperature than that of the air conditioner 10 (higher temperature compared with the same ambient temperature) can be supplied to the evaporator 124. As a result, higher-pressure steam is generated in the evaporator 124, so that the reaction rate of the hydration reaction in the reactor 94 is increased, and the heat accompanying the hydration reaction is dissipated from the chemical heat storage material at a higher temperature. The In this embodiment, as shown in FIG. 14, when the environmental temperature is 0 ° C., the water vapor temperature in the evaporator 124 becomes approximately 37 ° C., that is, the pressure difference from the equilibrium pressure as compared with the vehicle chemical heat storage system 10. It is confirmed that approximately 400 ° C. is obtained as the heat radiation temperature of the chemical heat storage material.

  As a result, in the automobile 11 to which the vehicle chemical heat storage system 160 is applied, when the engine 12 is operated, the exhaust gas of the engine 12 is well purified. Specifically, in this embodiment, it has been confirmed that the temperature of the catalytic converter 22 can be raised to about 350 ° C. by executing the heat dissipation mode for about 1 minute. The hydrocarbon component is halved compared to when the engine 12 is started without the heat dissipation mode. That is, in the automobile 11 to which the vehicle chemical heat storage system 160 is applied, the exhaust gas purification performance at the time of low temperature start is remarkably improved.

(Fourth embodiment)
A chemical heat storage system 170 for a vehicle according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 15 shows a system configuration diagram of a vehicular chemical heat storage system 170. As shown in this figure, the vehicle chemical heat storage system 170 according to the first and third embodiments is provided with a sub-reactor 172 and a sub-evaporator 174 in addition to the reactor 94 and the evaporator 124. It is different from the chemical heat storage systems 10 and 160 for vehicles. That is, the vehicle chemical heat storage system 170 is configured to include a set of the reactor 94 and the evaporator 124 and a set of the sub-reactor 172 and the sub-evaporator 174. This will be specifically described below.

  The sub-reactor 172 is provided independently of the reactor 94 (the chemical heat storage material filling spaces are not in communication). In this embodiment, the sub-reactor 172 has an exhaust gas flow path (connection portion between the exhaust supply line 96 and the exhaust return line 98) communicated with the exhaust gas flow path of the reactor 94 via the open / close valves 176 and 178. ing. The sub-reactor 172 communicates with the condenser 106 via a steam recovery line 182 having an on-off valve 180. That is, in this embodiment, the reactor 94 and the sub-reactor 172 release water vapor to the common condenser 106 as a result of the dehydration reaction.

  Thereby, the reactor 94 and the sub-reactor 172 store the exhaust heat of the exhaust gas at the same timing. The sub-reactor 172 may be communicated with a dedicated condenser independent of the condenser 106, or may be communicated with the exhaust line 20 independently of the reactor 94. Further, the sub-reactor 172 may have a configuration capable of executing the heat storage mode independently of the reactor 94. In this embodiment, the heat storage capacity (filling amount of the chemical heat storage material) of the sub-reactor 172 is small (about ¼) with respect to the heat storage capacity of the reactor 94.

  The sub-evaporator 174 communicates with the sub-reactor 172 via a water vapor supply line 186 having an on-off valve 184. In this embodiment, the condenser 106, the sub-reactor 172, and the sub-evaporator 174 are also vacuum degassed in the same manner as the condenser 106, the reactor 94, and the evaporator 124, and the water / steam circulation line 134. Is configured.

  The sub-evaporator 174 generates water vapor independently of the evaporator 124 and supplies the water vapor to the sub-reactor 172. Specifically, the sub-evaporator 174 is configured such that the latent heat of vaporization of water is supplied from an air conditioner heat medium (engine cooling water) flowing through the low-temperature heat medium line 136. Thereby, the sub-evaporator 174 is configured to supply the heat of adsorption of the first adsorber 40 as a heating heat source, similarly to the evaporator 124 in the chemical heat storage system 10 for vehicles.

  On the other hand, the evaporator 124 in this embodiment is supplied with the heat of adsorption of the second adsorber 44 as a heating heat source, as will be described later. Further, in this embodiment, the sub-evaporator 174 has a water / steam system space communicated with the water / steam system space of the evaporator 124 via the on-off valve 188, and is connected via the evaporator 124. In this configuration, water from the water tank 122 is supplied.

  The vehicular chemical heat storage system 170 can supply heat to the second evaporation condenser 46 using the heat released from the sub-reactor 172 as a heating heat source, and can supply heat of adsorption from the second adsorber 44 to the evaporator 124. Has been. Specifically, the second evaporative condenser 46 constituting the vehicle chemical heat storage system 170 has a heat medium passage 46A (see FIG. 18) in addition to the water / steam passage and the cooling water passage. ing. The heat medium flow path 46 </ b> A is provided in series in the middle portion of the first heat medium line 190.

  The first heat medium line 190 has one end connected to the heat medium flow path (heat exchange flow path between the chemical heat storage material and the heat medium) of the sub-reactor 172 and the other end connected to the first heat medium line 190 in the engine coolant introduction line 48. 1 adsorbers 40 and 44 (3 port valves 54 and 56) are joined upstream. A three-port valve 192 is provided at the junction of the first heat medium line 190 in the engine coolant introduction line 48. As described above, the heat medium flowing through the heat medium flow path 46A and the first heat medium line 190 is the same kind of liquid as the air conditioner heat medium and the engine cooling water.

  Further, the vehicle chemical heat storage system 170 is branched from the engine cooling water return line 50 and connected to the heat medium flow path in the evaporator 124, and the heat medium flow path and the sub of the evaporator 124. And a third heat medium line 196 communicating with the heat medium flow path of the reactor 172. A three-port valve 195 is provided at a branch portion of the second heat medium line 194 in the engine cooling water return line 50.

  Thereby, in the vehicle chemical heat storage system 170, as shown in FIG. 18, the sub-reactor 172, the second evaporating condenser 46 (first heat medium line 190), and the second adsorber 44 (engine cooling water introduction line 48). ), Evaporator 124 (engine cooling water return line 50, second heat medium line 194), and a configuration in which a heat medium circulation path is formed in which the heat medium circulates in the order of sub-reactor 172 (third heat medium line 196). Has been. In addition, a heat medium pump 198 for circulating the heat medium through the heat medium circulation path is provided on the first heat medium line 190 on the upstream side of the second evaporation condenser 46 (sub reactor 172 side). .

  Further, the vehicle chemical heat storage system 170 is configured to be able to supply the residual heat of the reactor 94 to the first adsorber 40 or the second adsorber 44. In this embodiment, the first heat medium line 190 branches from the downstream side of the heat medium pump 198 and joins the upstream side of the first adsorbers 40 and 44 (three-port valves 54 and 56) in the engine coolant introduction line 48. The fifth heat medium line 200 and the engine coolant return line 50 are branched from the fourth heat medium line 200 and joined to the upstream side of the heat medium pump 198 in the first heat medium line 190 via the heat medium flow path of the reactor 94. And a heat medium line 202. The reactor 94 in this embodiment is water. In addition to the water vapor system flow path, the exhaust gas flow path, and the heated air flow path, a heat medium (engine cooling water, air conditioner heat medium) flow path is formed.

  Three-port valves 204 and 206 are provided at a branch portion of the fourth heat medium line 200 and a junction portion of the fifth heat medium line 202 in the first heat medium line 190. Further, a three-port valve 208 is provided at the junction of the fourth heat medium line 200 in the engine coolant introduction line 48. Further, a three-port valve 210 is provided at a branch portion of the fifth heat medium line 202 in the engine cooling water return line 50.

  Accordingly, in the vehicle chemical heat storage system 170, as illustrated in FIG. 19, the reactor 94 (the fifth heat medium line 202), the first adsorber 40 (the fourth heat medium line 200, the engine cooling water return line 50). The heat medium circulation path in which the heat medium circulates in this order is formed. Although illustration is omitted, it is possible to form a heat medium circulation path through which the heat medium circulates in the order of the reactor 94 and the second adsorber 44.

  Further, the ECU 140 (not shown) constituting the chemical heat storage system 160 for the vehicle has on-off valves 176, 178, 180, 184, 188, a heat medium pump 198, as control targets, with respect to the ECU 140 constituting the chemical heat storage system 10 for vehicles. Three-port valves 192, 195, 204, 206, 208, 210 are added, and there is no reduced control target. Therefore, the control by the ECU 140 in the vehicle chemical heat storage system 170 is different from the control in the ECU 140 of the vehicle chemical heat storage system 10.

  Although details will be described later together with the operation of the present embodiment, the ECU 140 of the vehicle chemical heat storage system 170 controls the heat storage mode in the same manner as in the case of the vehicle chemical heat storage system 10. The regeneration mode for regenerating both the units 44 is the same as in the case of the vehicle chemical heat storage system 160. In addition, in the heat dissipation mode, the ECU 140 of the vehicular chemical heat storage system 170 causes the first adsorber 40 to generate heat of adsorption by causing the first evaporative condenser 42 to circulate cooling water having an environmental temperature. Heat is supplied to the sub-evaporator 174 as a heating heat source, and heat generated by the sub-reactor 172 is supplied to the second evaporation condenser 46 as a heating heat source, and the generated heat of adsorption of the second adsorber 44 is generated. Each control target is controlled so as to be provided to the evaporator 124 as a heating heat source.

  Moreover, in this embodiment, the chemical heat storage system 170 for vehicles has the heating air line 162, and the heating object is the catalytic converter 22. It should be noted that the reactor 94, the sub-reactor 172, the evaporator 124, the sub-evaporator 174, the heat medium line 190 to 196, the heat medium pump 198 and various valves connecting them are a part of the chemical heat storage section in the present invention. ). Moreover, the 1st heat-medium line 190, the 4th heat-medium line 200, and the heat-medium pump 198 comprise the heat recovery apparatus in this invention. The other structure of the chemical heat storage system 170 for vehicles is the same as the corresponding structure of the chemical heat storage system 10 for vehicles.

  Next, the operation of the fourth embodiment will be described mainly with respect to differences from the operation of the first embodiment.

  In the vehicle chemical heat storage system 160 configured as described above, while the automobile 11 is traveling, the heat storage mode is executed in the same manner as in the vehicle chemical heat storage system 10 to store heat in the reactor 94 as shown in FIG. In this case, exhaust heat of the engine 12 is supplied to both the reactor 94 and the sub-reactor 172 by opening the on-off valves 176 and 178, and the chemical heat storage material of both the reactor 94 and the sub-reactor 172 is supplied. The heat is stored.

  When the automobile 11 is stopped (air conditioning maintenance by the vehicle air conditioner 38 is no longer necessary), the ECU 140, as shown in FIG. A regeneration mode in which the adsorber 44 is regenerated is executed.

  In the vehicle chemical heat storage system 170, when the automobile 11 is started, the ECU 140 executes a heat radiation mode as shown in FIG. Specifically, the ECU 140 controls the three-port valves 82 to 88 and the driving cooling water pump 80 so that the cooling water is circulated in the order of the first evaporative condenser 42 and the outdoor heat exchanger 78. Further, the ECU 140 controls the three-port valves 36, 52, 54, 58, 138 and the heat medium pump 66 so that the air conditioner refrigerant (engine cooling water) flows in the order of the first adsorber 40 and the sub-evaporator 174. .

  As a result, first, water vapor corresponding to the environmental temperature is generated by heat exchange with the cooling water (low temperature heat source) at the environmental temperature in the first evaporative condenser 42, and this water vapor is adsorbed by the adsorbent of the first adsorber 40. The heat of adsorption generated thereby raises the temperature of the air-conditioner heat medium flowing through the first adsorber 40. This air conditioner heat medium reaches the sub-evaporator 174 via the engine cooling water return line 50, the bypass line 34, and the low-temperature heat medium line 136, and is used for heat exchange with the water of the sub-evaporator 174. By this heat exchange, the sub-evaporator 174 generates water vapor having a pressure corresponding to the temperature of the air conditioner heat medium, and this water vapor is supplied to the sub-reactor 172.

  On the other hand, the ECU 140 has three-port valves 56, 60, 192, 195, 204 so that the heat medium is circulated in the order of the sub-reactor 172, the second evaporation condenser 46, the second adsorber 44, and the evaporator 124. 206, controls the heat medium pump 198. Further, the ECU 140 operates the blower 105.

  As a result, in the chemical heat storage system 170 for a vehicle, the chemical heat storage material in the sub-reactor 172 dissipates heat due to the water vapor supplied from the sub-evaporator 174, and the heat medium that passes through the sub-reactor 172 by this heat. Is heated up. This heat medium reaches the second evaporative condenser 46 via the first heat medium line 190 and exchanges heat with water in the second evaporative condenser 46 so that the pressure according to the temperature of the heat medium is increased. Water vapor, that is, water vapor having a pressure higher than the water vapor pressure generated in the first evaporative condenser 42 is generated. The high-pressure water vapor is adsorbed by the adsorbent in the second adsorber 44, so that the second adsorber 44 generates heat of adsorption higher than that of the first adsorber 40.

  This heat of adsorption is used to raise the temperature of the heat medium introduced into the second adsorber 44 from the second evaporation condenser 46 via the first heat medium line 190. Thereby, the heat medium temperature becomes higher than the temperature immediately after passing through the sub-reactor 172. Then, when this heat medium is led to the evaporator 124 through the engine cooling water return line 50 and the second heat medium line 194, water vapor having a pressure corresponding to the temperature of the heat medium is generated in the evaporator 124. The steam generated thereby is supplied into the reactor 94 through the steam supply line 132.

  Here, the vehicle chemical heat storage system 170 uses the first adsorber 40, the sub-reactor 172, and the second adsorber 44 to raise the temperature of the heat medium supplied to the evaporator 124 in three stages. Compared with the heat storage systems 10 and 160, a higher-temperature air-conditioner heat medium can be supplied to the evaporator 124. As a result, higher-pressure water vapor is generated in the evaporator 124, so that the reaction rate of the hydration reaction is faster in the reactor 94, and the chemical heat storage material dissipates heat at a higher temperature. In this embodiment, although not shown, even when the environmental temperature is 0 ° C. or lower, it is possible to obtain approximately 400 ° C. or higher as the heat radiation temperature of the chemical heat storage material.

  As a result, in the automobile 11 to which the vehicle chemical heat storage system 170 is applied, when the engine 12 is operated, the exhaust gas of the engine 12 is well purified. That is, in the automobile 11 to which the vehicle chemical heat storage system 170 is applied, the warm-up time for obtaining the exhaust gas purification performance at the time of low temperature start equivalent to the automobile 11 to which the vehicle chemical heat storage system 160 is applied is shortened. .

  Further, the ECU 140 of the vehicle chemical heat storage system 170 performs a return mode in which the first adsorber 40 is regenerated by the residual heat of the reactor 94 as shown in FIG. 19 after the heat release mode (warming up of the catalytic converter 22) is completed. Execute. In the return mode, the ECU 140 closes the on-off valves 108 and 184 to stop the hydration reaction in the reactors 94 and 172 so that the heat medium circulates in the order of the reactor 94 and the first adsorber 40. The three-port valves 54-60, 192, 195, 204-210 and the heat medium pump 198 are controlled.

  Thereby, the residual heat of the reactor 94 is conveyed to the 1st adsorption device 40 via a heat medium, and a dehydration reaction arises in the 1st adsorption device 40, and adsorbent is reproduced | regenerated. In the example of FIG. 19, the vehicle interior is heated by circulating an air conditioner heat medium between the second adsorber 44 and the indoor heat exchanger 64. In this case, the flow of the cooling water for condensation in the first evaporative condenser 42 and for evaporating in the second evaporative condenser 46 may be opposite to that in the heating mode shown in FIG. ECU 140 executes the heat storage mode shown in FIG. 16 when the temperature of engine cooling water circulating through cooling water circulation line 30 is 80 ° C. or higher when engine 12 is started.

  Here, in the vehicle chemical heat storage system 170, since the first adsorber 40 is regenerated using the residual heat of the reactor 94, the first adsorber 40 is regenerated before the temperature of the engine cooling water rises. A heating mode can be performed.

  In the fourth embodiment, the example in which the first adsorber 40 is regenerated by the residual heat of the reactor 94 after the execution of the heat release mode is shown. However, the present invention is not limited to this, for example, after the heat release mode is executed. The second adsorber 44 may be regenerated by the residual heat of the reactor 94, or the adsorber having a small amount of water vapor adsorption (a large amount of desorption) of the two adsorbers 40, 44 may be regenerated. A simple configuration in which the first adsorber 40 or the second adsorber 44 is not regenerated by the residual heat of the reactor 94 may be employed. In the third embodiment, after the heat radiation mode is executed, either the first adsorber 40 or the second adsorber 44 may be regenerated by the residual heat of the reactor 94.

  Further, the evaporator / condenser 152 according to the second embodiment may be applied to the third and fourth embodiments. When applied to the fourth embodiment, an evaporator / condenser 152 and a sub-evaporator / condenser may be provided.

  Furthermore, in the third and fourth embodiments, the example in which the heating target is the catalytic converter 22 has been shown, but the present invention is not limited to this, and the heating target may be the battery 16, for example. In the configuration of each embodiment described above, the heating target is not limited to the battery 16 and the catalytic converter 22. For example, the engine 12 and / or the heater core is set as the heating target based on a predetermined setting or according to a request. Further, for example, a vehicle body, wheels, windshield glass, or the like to which ice or snow adheres may be heated. It is also possible to select a heating target from a plurality of heating target candidates.

(Fifth embodiment)
A vehicle chemical heat storage system 220 according to a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 20 shows a vehicle chemical heat storage system 220 in a system configuration diagram. As shown in this figure, the vehicle chemical heat storage system 220 is applied to the automobile 11 including the vehicle air conditioner 222 to which a configuration for performing a cooling operation using the indoor heat exchanger 64 is added. This is different from the chemical heat storage system for a vehicle 10 according to the first embodiment. This will be specifically described below.

  As shown in FIG. 20, the vehicle air conditioner 222 includes a total of eight 4-port valves 224, 226, 228 instead of a total of eight 3-port valves 54, 56, 58, 60, 82, 84, 86, 88. , 230, 232, 234, 236, 238, which is different from the vehicle air conditioner 38. The three ports of the four-port valves 224 to 238 have the same lines as the three ports of the corresponding three-port valves 54, 56, 58, 60, 82, 84, 86, 88 constituting the vehicle air conditioner 38. Is connected. The vehicle air conditioner 222 is provided on the downstream side of the heat medium pump 66 in the air conditioner heat medium circulation line 62 (in this embodiment, upstream of the branch to the first adsorber 40 and the second adsorber 44). The three-port valve 240 is provided downstream of the driving coolant pump 80 in the coolant circulation line 76 (in this embodiment, upstream of the branch to the first evaporator condenser 42 and the second evaporator condenser 46). And a three-port valve 242.

  In the vehicle air conditioner 222, the air conditioner heat medium is circulated to the first evaporative condenser 42 and the second evaporative condenser 46 through the remaining ports of the 3-port valve 240 and the four 4-port valves 232 to 238. The cooling air conditioner heat medium line 244 is connected so that the first evaporative condenser 42 and the second evaporative condenser 46 are in parallel (independently, the air conditioner heat medium can be circulated). That is, the air conditioner heat medium line 244 for cooling branches from one port of the three-port valve 240 in the air conditioner heat medium circulation line 62 into two systems, and the first adsorber 40 and the second adsorber in the air conditioner heat medium circulation line 62 are branched. 44 and the indoor heat exchanger 64. Thereby, the vehicle air conditioner 222 has a configuration in which the air conditioner heat medium can be circulated in the order of the first evaporative condenser 42 or the second evaporative condenser 46 and the indoor heat exchanger 64.

  In the vehicle air conditioner 222, cooling for circulating cooling water through the first adsorber 40 and the second adsorber 44 to the remaining ports of the three-port valve 242 and the four four-port valves 224 to 230. The cooling water line 246 is connected so that the first adsorber 40 and the second adsorber 44 are in parallel (the cooling water can be circulated independently). In this embodiment, the cooling water line 246 is branched into two systems from one port of the three-port valve 242 in the cooling water circulation line 76, and the system passing through the first adsorber 40 joins the second series line 92. At the same time, the system passing through the second adsorber 44 is joined to the first series line 90. Thereby, the vehicle air conditioner 222 has a configuration in which the cooling water can be circulated in the order of the first adsorber 40 or the first evaporative condenser 42 and the outdoor heat exchanger 78.

  Next, the operation of the fifth embodiment will be described mainly with respect to differences from the operation of the first embodiment.

  The vehicle air conditioner 222 having the above-described configuration is operated in the heating mode as shown in FIG. 21 while the automobile 11 is traveling, for example, in winter. In this heating mode, the air-conditioner heat medium is circulated in the order of the first adsorber 40 that radiates the heat of adsorption accompanying the adsorption of water vapor supplied from the first evaporative condenser 42 and the indoor heat exchanger 64. Thus, heat exchange between the air-conditioner heat medium heated by the adsorption heat and the air-conditioning air is performed in the indoor heat exchanger 64, and the vehicle interior is heated. At this time, the second adsorber 44 regenerates the adsorbent by desorbing the water vapor from the adsorbent by heating with engine cooling water, and the water vapor from the second adsorber 44 is condensed in the second evaporative condenser 46. Is done. In the example of FIG. 21, the cooling water whose condensation heat has been recovered by the second evaporation condenser 46 is used as a heating heat source to generate water vapor in the first evaporation condenser 42, and this water vapor is supplied to the first adsorber 40. . The heating mode is maintained by alternately performing adsorption and desorption in the first adsorber 40 and the second adsorber 44. The heating mode described above is exactly the same as the heating mode (see FIG. 3) in the vehicle air conditioner 38.

  At this time, in the chemical heat storage system for vehicles 220, the chemical heat storage mode is executed as necessary. FIG. 21 illustrates a state in which the chemical heat storage mode is being executed. The vehicular chemical heat storage system 220 has the same configuration as the vehicular chemical heat storage system 10 except that the adsorption heat of the vehicular air conditioner 222 becomes the heating heat source of the evaporator 124 instead of the vehicular air conditioner 38. Both the heat storage mode and the heat dissipation mode (not shown) are operated in the same manner as the chemical heat storage system 10 for vehicles.

  Then, for example, during traveling of the automobile 11 in summer, the vehicle air conditioner 222 is operated in the cooling mode as shown in FIG. In this cooling mode, the air conditioner heat medium is circulated in the order of the first evaporative condenser 42 (second evaporative condenser 46), in which latent heat is taken away from the air conditioner heat medium to evaporate the water vapor, and the indoor heat exchanger 64. As a result, the heat exchange between the air-conditioner heat medium cooled by the evaporative latent heat being taken away by the first evaporation condenser 42 and the air-conditioning air is performed in the indoor heat exchanger 64, and the vehicle interior is cooled. At this time, the second adsorber 44 regenerates the adsorbent by desorbing the water vapor from the adsorbent by heating with engine cooling water, and the water vapor from the second adsorber 44 is condensed in the second evaporative condenser 46. Is done. In the example of FIG. 22, the cooling water that has recovered the heat of adsorption of the first adsorber 40 that accompanies the adsorption of water vapor generated by the first evaporative condenser 42 is transferred to the second adsorber 44 by the second evaporative condenser 46. Condensation heat associated with the regeneration is further recovered, and is cooled and circulated in the outdoor heat exchanger 78 by heat exchange with the outside air. The cooling mode is maintained by alternately performing adsorption and desorption in the first adsorber 40 and the second adsorber 44.

  Also in this cooling mode execution, in the chemical heat storage system 220 for vehicles, chemical heat storage mode is performed as needed.

  As described above, the vehicle air conditioner 222 can be operated in the cooling mode and the heating mode using the common indoor heat exchanger 64. It goes without saying that the vehicle air conditioner 222 may be applied to the vehicle chemical heat storage systems 150, 160, and 170. For example, in the vehicle chemical heat storage systems 160 and 170 whose heating object is the catalytic converter 22, the chemical heat storage mode is executed during the execution of the cooling mode.

  In each of the above-described embodiments, the schematic configuration of the vehicle chemical heat storage system 10, 150, 160, 170, 220 is illustrated, but the present invention is not limited to this, and can be implemented with various modifications. Needless to say. In particular, the arrangement of each line, the type of valves, the arrangement, the opening / closing operation, and the like in each embodiment need only be able to execute the corresponding modes (heat storage and heat dissipation modes), and various changes can be made. Similarly, it goes without saying that the vehicle air conditioners 38 and 222 can be implemented with various modifications.

  Further, in each of the above-described embodiments, an example in which calcium hydroxide is used as a chemical heat storage material has been shown. However, the present invention is not limited to this, and various chemical heat storage materials that perform various heat dissipation and heat storage by hydration and dehydration. Can be implemented.

  Further, in each of the above-described embodiments, the vehicle air conditioner 38 includes the first evaporative condenser 42 and the second evaporative condenser 46. However, the present invention is not limited to this, and for example, The air conditioner 38 may include a condenser and an evaporator configured as individual heat exchangers for each adsorber.

1 is a system configuration diagram showing a schematic overall configuration of a chemical heat storage system for a vehicle according to a first embodiment of the present invention. It is a figure of ECU which comprises the chemical thermal storage system for vehicles concerning a 1st embodiment of the present invention. It is a system block diagram for demonstrating the thermal storage mode of the chemical thermal storage system for vehicles which concerns on the 1st Embodiment of this invention. It is a system block diagram for demonstrating the thermal radiation mode of the chemical thermal storage system for vehicles which concerns on the 1st Embodiment of this invention. It is a figure which illustrates notionally the operation mode of the chemical thermal storage system for vehicles concerning a 1st embodiment of the present invention, and (A) a conceptual diagram of thermal storage mode, (B) is a conceptual diagram of heat dissipation mode. . (A) is PT diagram which shows the thermal storage of the chemical thermal storage system for vehicles which concerns on the 1st Embodiment of this invention, and a thermal radiation cycle, (B) is the chemical thermal storage for vehicles which concerns on the comparative example with embodiment of this invention. It is PT diagram which shows the thermal storage and heat dissipation cycle of a system. It is a figure which shows the operation cycle of the vehicle air conditioner which comprises the chemical heat storage system for vehicles which concerns on the 1st Embodiment of this invention, Comprising: (A) The operation cycle diagram of heating operation, (B) is air_conditionaing | cooling operation. It is a diagram which shows an operation cycle. It is a diagram which shows the adsorption isotherm of the adsorbent which comprises the chemical thermal storage system for vehicles which concerns on the 1st Embodiment of this invention. It is a diagram which shows the relationship between the environmental temperature of the battery which comprises the hybrid vehicle to which the chemical thermal storage system for vehicles concerning the 1st Embodiment of this invention was applied, and output density. It is a system block diagram which shows the schematic whole structure of the chemical thermal storage system for vehicles which concerns on the 2nd Embodiment of this invention. It is a system block diagram which shows the schematic whole structure of the chemical heat storage system for vehicles which concerns on the 3rd Embodiment of this invention. It is a system block diagram for demonstrating the regeneration mode of the chemical heat storage system for vehicles which concerns on the 3rd Embodiment of this invention. It is a system block diagram for demonstrating the thermal radiation mode of the chemical thermal storage system for vehicles which concerns on the 3rd Embodiment of this invention. It is PT diagram which shows the thermal storage of the chemical thermal storage system for vehicles which concerns on the 3rd Embodiment of this invention, and a thermal radiation cycle. It is a system block diagram which shows the schematic whole structure of the chemical heat storage system for vehicles which concerns on the 4th Embodiment of this invention. It is a system block diagram for demonstrating the thermal storage mode of the chemical thermal storage system for vehicles which concerns on the 4th Embodiment of this invention. It is a system block diagram for demonstrating the regeneration mode of the chemical thermal storage system for vehicles which concerns on the 4th Embodiment of this invention. It is a system block diagram for demonstrating the thermal radiation mode of the chemical thermal storage system for vehicles which concerns on the 4th Embodiment of this invention. It is a system block diagram for demonstrating the return mode of the chemical heat storage system for vehicles which concerns on the 4th Embodiment of this invention. It is a system block diagram which shows the schematic whole structure of the chemical heat storage system for vehicles which concerns on the 5th Embodiment of this invention. It is a system block diagram for demonstrating the heating mode of the vehicle air conditioner applied to the chemical heat storage system for vehicles which concerns on the 5th Embodiment of this invention. It is a system block diagram for demonstrating the air_conditioning | cooling mode of the vehicle air conditioner applied to the chemical heat storage system for vehicles which concerns on the 5th Embodiment of this invention.

Explanation of symbols

10 Chemical heat storage system for vehicles 11 Automobile (vehicle)
12 engine (internal combustion engine)
14 Motor 16 Battery 22 Catalytic converter (exhaust catalyst)
38 Vehicle air conditioner (adsorption heat pump type air conditioner)
40 First adsorber (adsorber)
42 Evaporation condenser (adsorbate evaporation section)
44 Second adsorber (adsorber)
46 Evaporator / Condenser (Adsorbate Evaporator)
106 Condenser (water condensing part)
124 Evaporator (water evaporation unit)
140 ECU (control device)
150/160/170/220 Chemical heat storage system for vehicles 152 Evaporation / condenser (water evaporation section, water condensing section)
172 Sub-reactor (reactor)
174 Sub-evaporator (water evaporation part)
190 First heat medium line (chemical heat storage unit, heat recovery device)
194 Second heat medium line (chemical heat storage part)
196 Second heat medium line (chemical heat storage part)
198 Heat transfer pump (chemical heat storage unit, heat recovery device)
200 4th heat medium line (heat recovery device)
202 5th heat medium line (heat recovery device)
222 Air conditioner for vehicles (Adsorption heat pump type air conditioner)

Claims (10)

A reactor with a built-in chemical heat storage material that stores heat by performing a dehydration reaction with exhaust heat of an internal combustion engine mounted on a vehicle,
A water condensing part for condensing water vapor released from the reactor during the dehydration reaction;
An adsorber containing an adsorbent, an adsorbate evaporating unit for evaporating the adsorbate adsorbed by the adsorber, and an adsorbate condensing unit for desorbing the adsorbate by desorption from the adsorber Adsorption heat pump type air conditioner,
A water evaporation part for supplying water vapor for the hydration reaction to the reactor by evaporating water using the heat of adsorption generated in the adsorber of the adsorption heat pump type air conditioner as a heating heat source;
A chemical heat storage system for vehicles.   The vehicular chemical heat storage system according to claim 1, wherein the water vapor system that communicates the reactor, the water condensing unit, and the water evaporating unit is previously depressurized to less than atmospheric pressure.   The adsorption heat pump type air conditioner is configured so that the exhaust heat of the internal combustion engine is stored in the reactor when the vehicle is running, and the adsorption heat of the adsorber is transmitted to the water evaporation unit when the vehicle is started. The chemical heat storage system for vehicles according to claim 1 or 2 further provided with the control device which controls. The adsorption heat pump type air conditioner has at least two sets of the adsorber and the adsorbate evaporation unit,
The controller controls the adsorption heat pump type air conditioner so that two adsorbers desorb the adsorbate when the vehicle is stopped, and the adsorber is one when the vehicle is started. The adsorption heat pump is configured such that the adsorbate evaporating unit for another adsorber is heated by the adsorption heat of the other adsorber to evaporate the adsorbate, and the adsorption heat of the other adsorber is supplied to the water evaporation unit as a heating heat source The chemical heat storage system for vehicles according to claim 3 which controls a type air-conditioner. A chemical heat storage section comprising at least two sets of the reactor and the water evaporation section;
The adsorption heat pump type air conditioner has at least two sets of the adsorber and the adsorbate evaporation unit,
The controller is
When the vehicle travels, the heat of the exhaust gas of the internal combustion engine is stored in the reactor,
When the vehicle is stopped, the adsorption heat pump type air conditioner is controlled so that the two adsorbers desorb the adsorbate,
When the vehicle is started, the adsorption heat of one of the adsorbers is supplied as a heating heat source to the water evaporation section for one of the reactors, and the reaction heat accompanying the hydration reaction in the one reactor is the other Heat is supplied to the adsorbate evaporation section for the adsorber as a heating heat source, and the heat of adsorption of the other adsorber is supplied to the water evaporation section for the other reactor as a heating heat source, so that the reaction heat of the other reactor The chemical heat storage system for vehicles according to claim 3 which controls said adsorption type heat pump type air conditioner and said chemical heat storage part so that said heating object may be heated by. A heat recovery device for transferring heat of the reactor for heating the object to be heated to at least one of the two adsorbers;
After the heating of the heating target is completed, the control device stops supplying water vapor to the reactor for heating the heating target, and the residual heat of the reactor is one of the two adsorbers. The vehicle chemical heat storage system according to claim 4 or 5, wherein the adsorption heat pump type air conditioner and the heat recovery device are controlled so as to be transmitted to the vehicle. The vehicle has an exhaust catalyst for purifying exhaust gas of the internal combustion engine,
The chemical heat storage system for a vehicle according to claim 4, wherein the exhaust catalyst is the heating target. The vehicle is a hybrid vehicle including a motor that exhibits a driving force for traveling and a battery that supplies power to the motor.
The chemical heat storage system for vehicles according to any one of claims 1 to 7, wherein the battery is the heating target. The adsorption heat pump type air conditioner is configured such that adsorbate is desorbed from the adsorber by supplying heat from cooling water of the internal combustion engine,
The vehicle according to any one of claims 1 to 8, wherein the water evaporating unit is configured such that the adsorption heat of the adsorber is supplied as a heating heat source of water via cooling water of the internal combustion engine. Chemical heat storage system.   10. The vehicle chemistry according to claim 1, wherein the water evaporation unit also has a function of the water condenser that condenses water vapor released from the reactor along with the dehydration reaction. Thermal storage system.

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