JP2022158396A - Control method for adsorption type heat pump, computer program, and adsorption type heat pump - Google Patents

Abstract

To provide a technique that improves the cooling/heating capacity of an adsorption type heat pump in a control method for the adsorption type heat pump.SOLUTION: A control method for an adsorption type heat pump comprises: a first step of supplying an adsorbate to a first adsorbent housed in a first adsorber, and causing the first adsorbent to adsorb the adsorbate; a second step of heating a second adsorbent housed in a second adsorber, and causing the adsorbate adsorbed in the second adsorbent to be desorbed from the second adsorbent; and a third step of performing vapor recovery for moving adsorbate vapor between the first adsorber and the second adsorber, and sensible heat recovery for exchanging heat between the first adsorber and the second adsorber, in parallel after the first step and the second step.SELECTED DRAWING: Figure 2

Description

The present invention relates to an adsorption heat pump control method, a computer program, and an adsorption heat pump.

Conventionally, there is known a control method for an adsorption heat pump that generates thermal energy for cooling or heating an object by repeating adsorption and desorption of an adsorbate with an adsorbent (for example, Patent Document 1).

JP 2016-200342 A

However, even with the prior art described above, there is still room for improvement in the technology for improving the cooling and heating capacity of the adsorption heat pump in the method of controlling the adsorption heat pump.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a technique for improving the cooling and heating capacity of an adsorption heat pump in a control method for an adsorption heat pump.

The present invention has been made to solve at least part of the above problems, and can be implemented as the following modes.

(1) According to one aspect of the present invention, a control method for an adsorption heat pump is provided. This adsorption heat pump control method includes a first step of supplying an adsorbate to a first adsorbent contained in a first adsorber to cause the first adsorbent to adsorb the adsorbate; A second step of heating the second adsorbent contained in the second adsorber to desorb the adsorbate adsorbed on the second adsorbent from the second adsorbent; and the first step. and after the second step, vapor recovery to move adsorbate vapor between the first adsorber and the second adsorber; and a third step in which sensible heat recovery for exchanging heat between them is performed in parallel.

According to this configuration, after the first step of adsorbing the adsorbate on the first adsorbent and the second step of desorbing the adsorbate adsorbed on the second adsorbent from the second adsorbent, the second The three steps are steam recovery from the second adsorber to the first adsorber and sensible heat recovery from the second adsorber to the first adsorber. In an adsorption heat pump having two adsorbers, each of the two adsorbers is set so that the time during which the adsorbate is supplied to the adsorbent and the time during which the adsorbent is heated alternately. As a result, the adsorption heat pump continuously cools or heats the object by switching between an adsorber that adsorbs the adsorbate and an adsorber that heats the adsorbent. Therefore, when the time for which the adsorbate is supplied in one adsorber has passed, the adsorbate is adsorbed by the adsorbent in the next time, and the adsorbate remaining in the other adsorber is moved to the one adsorber. , recover the vapor to be adsorbed by the adsorbent of one of the adsorbers. As a result, the other adsorbent can further desorb the adsorbate before the adsorbate is supplied to the other adsorber, thereby widening the operating range of the adsorbent and improving the adsorption capacity of the adsorbent. be able to. In addition, when the time for heating the adsorbent of the other adsorber has passed, the sensible heat of the adsorbent that has been heated is transferred to the one adsorber whose adsorbent is heated in the next time, and Sensible heat recovery is performed to heat the adsorbent of the adsorber. As a result, the sensible heat of the other adsorbent can be effectively used to reduce the amount of heat for heating the one adsorber at the next time. Therefore, sensible heat loss can be suppressed and the amount of heat input to the adsorption heat pump system can be reduced, thereby improving system efficiency. Furthermore, in the above configuration, vapor recovery and sensible heat recovery are performed in parallel during the switching time of the adsorber set between the time during which the adsorbate is supplied to the adsorbent and the time during which the adsorbent is heated. In this case, the adsorber switching time is the sum of the time for steam recovery and the time for sensible heat recovery. If the switching time, which is the total time for steam recovery and sensible heat recovery, is shortened, the evaporator for supplying adsorbate vapor to the adsorber and the condensation for condensing the adsorbate vapor desorbed from the adsorbent will be reduced. The operating time of the equipment can be lengthened. As a result, the cooling and heating capacity of the adsorption heat pump can be improved.

(2) In the adsorption heat pump control method of the above aspect, in the third step, the steam recovery is started prior to the sensible heat recovery, and the sensible heat recovery is started during the steam recovery. By starting the steam recovery and the sensible heat recovery may be performed in parallel. According to this configuration, in the third step, steam recovery is started first, and sensible heat recovery is started in the middle of steam recovery. Depending on the state of the adsorption heat pump, the time required for vapor recovery may be longer than the time required for sensible heat recovery. Therefore, steam can be sufficiently recovered by performing steam recovery before steam recovery and sensible heat recovery are performed in parallel. As a result, the utilization rate of adsorbate vapor and system efficiency in the entire adsorption heat pump can be improved.

(3) In the adsorption heat pump control method of the above aspect, in the third step, the steam recovery and the sensible heat recovery are performed in parallel, then the steam recovery is stopped, and the sensible heat recovery is continued. You may do so. According to this configuration, in the third step, while steam recovery and sensible heat recovery are being performed in parallel, steam recovery is stopped and sensible heat recovery is continued. Depending on the state of the adsorption heat pump, the time required for sensible heat recovery may be longer than the time required for vapor recovery. Therefore, the sensible heat can be sufficiently recovered by performing the sensible heat recovery after performing the steam recovery and the sensible heat recovery in parallel. As a result, the sensible heat recovery rate and system efficiency in the entire adsorption heat pump can be improved.

(4) According to another aspect of the present invention, there is provided a computer program that is executed by a controller that controls the operation of the adsorption heat pump. This computer program has a first function of supplying an adsorbate to a first adsorbent housed in a first adsorber to cause the first adsorbent to adsorb the adsorbate, and a second adsorber. a second function of heating the second adsorbent housed in the second adsorbent to desorb the adsorbate adsorbed on the second adsorbent from the second adsorbent, the first function and the second vapor recovery moving adsorbate vapor between said first adsorber and said second adsorber after performing a function; and between said first adsorber and said second adsorber; The control unit is caused to perform a sensible heat recovery that performs heat exchange and a third function that performs sensible heat recovery in parallel. According to this configuration, the computer program executes the first function of adsorbing the adsorbate to the first adsorbent and the second function of desorbing the adsorbate from the second adsorbent, and then, as the third function, The controller is caused to perform sensible heat recovery and steam recovery. As a result, when the time for which the adsorbate is supplied to one adsorber has passed, the adsorbate remaining in the other adsorber is desorbed before the adsorbate is supplied to the other adsorber, and the one adsorbate is desorbed. Since the vapor to be adsorbed by the vessel can be recovered, the operating range of the adsorbent can be expanded and the adsorption capacity of the adsorbent can be improved. In addition, sensible heat recovery can be performed by effectively utilizing the sensible heat of the adsorbent provided in the other adsorber. As a result, sensible heat loss can be suppressed and the amount of heat input to the adsorption heat pump system can be reduced, thereby improving system efficiency. In addition, since steam recovery and sensible heat recovery are performed in parallel, the switching time of the adsorber, which is the total time for steam recovery and sensible heat recovery, is shortened, and the operating time of the evaporator and condenser is extended. be able to. Thereby, this computer program can improve the cooling and heating capacity of the adsorption heat pump.

(5) According to still another aspect of the present invention, an adsorption heat pump is provided. This adsorption heat pump contains a first adsorber containing a first adsorbent, a first heat exchanger for exchanging heat with the first adsorbent, and a second adsorbent. and a second heat exchanger that performs heat exchange between the second adsorber and the second adsorbent, and the adsorbate is supplied to the first adsorbent to the first adsorbent After adsorbing the adsorbate and heating the second adsorbent to desorb the adsorbate adsorbed by the second adsorbent from the second adsorbent, the first adsorber and the second adsorber to move adsorbate vapor; and sensible heat recovery to exchange heat between the first heat exchanger and the second heat exchanger. and a control unit that performs in parallel. According to this configuration, the control unit causes the first adsorbent to adsorb the adsorbate, desorbs the adsorbate from the second adsorbent, and then performs sensible heat recovery and steam recovery. As a result, when the time for which the adsorbate is supplied to one adsorber has passed, the adsorbate remaining in the other adsorber is desorbed before the adsorbate is supplied to the other adsorber, and the one adsorbate is desorbed. Since the vapor to be adsorbed by the vessel can be recovered, the operating range of the adsorbent can be expanded and the adsorption capacity of the adsorbent can be improved. In addition, sensible heat recovery can be performed by effectively utilizing the sensible heat of the adsorbent provided in the other adsorber. As a result, sensible heat loss can be suppressed and the amount of heat input to the adsorption heat pump system can be reduced, thereby improving system efficiency. Furthermore, since the control unit performs steam recovery and sensible heat recovery in parallel, the switching time, which is the total time for steam recovery and sensible heat recovery, can be shortened, and the operating time of the evaporator and condenser can be lengthened. can be done. Therefore, the adsorption heat pump can improve the cooling and heating capacity.

(6) In the adsorption heat pump of the above aspect, the first heat exchanger and the second heat exchanger are connected, and the first adsorbent or the second adsorbent absorbs adsorbate vapor. A radiator may be provided for releasing the heat of adsorption generated during adsorption to the outside. According to this configuration, the heat radiator releases to the outside heat of adsorption generated when the first adsorbent or the second adsorbent adsorbs the adsorbate vapor. Thereby, since the temperature of the adsorbent can be lowered, the adsorption amount of the adsorbent can be increased. When the adsorption amount of the adsorbent increases, the amount of heat of vaporization generated in the evaporator that supplies adsorbate vapor to the adsorber increases, so the cooling capacity can be improved.

It should be noted that the present invention can be implemented in various aspects, for example, a system including an adsorption heat pump, a method of controlling such a system, an adsorption heat pump and a method of controlling the adsorption heat pump in such a system. It can be realized in the form of a server device for distributing a computer program for executing the program, a non-temporary storage medium storing the computer program, or the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows schematic structure of the adsorption heat pump of 1st Embodiment. 4 is a flow chart of a method for controlling the adsorption heat pump of the first embodiment; It is a figure explaining the operation|movement of the adsorption-type heat pump in a 1st adsorption-desorption process. It is a figure explaining the operation|movement of the adsorption heat pump in a 1st simultaneous recovery process. It is a figure explaining the operation|movement of the adsorption-type heat pump in a 2nd adsorption-desorption process. It is a figure explaining the operation|movement of the adsorption heat pump in a 2nd simultaneous recovery process. It is a figure which shows the comparison result of thermal COP ratio. It is a figure which shows the comparison result of cold-heat output ratio. It is a flowchart of the control method of the adsorption heat pump of 2nd Embodiment. FIG. 4 is a diagram for explaining the operation of the adsorption heat pump in the first vapor recovery step; It is a figure explaining the operation|movement of the adsorption heat pump in a 1st sensible-heat recovery process. It is a block diagram which shows schematic structure of the adsorption-type heat pump of 3rd Embodiment. It is a figure explaining the operation|movement of the adsorption-type heat pump in a 1st adsorption-desorption process. It is a figure explaining the operation|movement of the adsorption heat pump in a 1st simultaneous recovery process. It is a figure explaining the operation|movement of the adsorption-type heat pump in a 2nd adsorption-desorption process. It is a figure explaining the operation|movement of the adsorption heat pump in a 2nd simultaneous recovery process.

<First Embodiment>
FIG. 1 is a block diagram showing a schematic configuration of an adsorption heat pump 1 according to the first embodiment. The adsorption heat pump 1 absorbs or desorbs an adsorbate in an adsorbent contained in an adsorber, thereby generating thermal energy capable of cooling an object (hereinafter referred to as “cold heat”) and thermal energy capable of heating an object. (hereinafter referred to as “thermal heat”). The adsorption heat pump 1 of the present embodiment is used in indoor air conditioning equipment, and can adjust the indoor temperature by cooling or heating air as a target. The adsorption heat pump 1 of this embodiment includes a pair of adsorbers 11 and 12, a low-temperature evaporator 13, a high-temperature evaporator 14, a heat supply unit 15, a condenser 16, an indoor unit 17, and an outdoor unit 18. , a steam valve 21, a heat medium valve 22, a control unit 25, a plurality of pipes connecting these, a plurality of valves for controlling the flow of fluid, and a plurality of pumps for pumping the fluid. Prepare. The field to which the adsorption heat pump 1 of the present embodiment is applied is not limited to indoor air conditioning. It can also be used as

The adsorber 11 and the adsorber 12 are adsorbers having approximately the same internal volume. Inside the adsorber 11, an adsorbent 11a and a heat exchanger 11b are arranged so as to be able to exchange heat with each other. Inside the adsorber 12, an adsorbent 12a and a heat exchanger 12b are arranged so as to be able to exchange heat with each other. The adsorbents 11a and 12a are silica gel or zeolite, and have the ability to adsorb water as an "adsorbate". The heat exchangers 11b and 12b are, for example, channels through which a heat medium flows, and heat exchange is performed between the heat medium and the adsorbents 11a and 12a. In this embodiment, the heat medium flowing inside the heat exchangers 11b and 12b is water. The types of adsorbents and adsorbates contained in each of the adsorbers 11 and 12 are not limited to these. The adsorbent may be activated carbon, and the adsorbate may be alcohol or ammonia.

A low temperature evaporator 13 is connected to each of the adsorbers 11 and 12 via a vapor valve 21 . The low-temperature evaporator 13 generates relatively low-temperature water vapor (adsorbate vapor) from liquid water by the adsorbate vapor being adsorbed by the adsorbers 11 and 12 in the adsorption step and the pressure inside the low-temperature evaporator 13 being reduced. The low-temperature evaporator 13 accommodates a heat exchanger 13a to which heat of vaporization when steam is generated is transmitted. The heat exchanger 13 a is connected to the indoor unit 17 or the outdoor unit 18 via two switching valves 23 and 24 . A pipe connected to the heat exchanger 13a of the low-temperature evaporator 13 is attached with a pump 13b for pressurizing the "heat medium for temperature control" flowing through the heat exchanger 13a. In this embodiment, the heat medium for temperature control is, for example, water containing antifreeze.

The high-temperature evaporator 14 is connected to the heat exchangers 11b and 12b of the adsorbers 11 and 12 through the heat medium valves 22, respectively. The high temperature evaporator 14 produces relatively high temperature steam from liquid water. The high temperature evaporator 14 houses a heat exchanger 14a. Here, the relatively high-temperature steam generated in the high-temperature evaporator 14 is referred to as "adsorber heat medium".

The heat supply unit 15 includes a gas engine 15a and a pipe 15b. The gas engine 15a generates heat by burning gas. The pipe 15b connects the gas engine 15a and the heat exchanger 14a of the high-temperature evaporator 14, and contains, for example, water containing antifreeze as a "heat medium for steam". The steam heat medium enclosed in the pipe 15b transfers the heat generated by the gas engine 15a to the high-temperature evaporator 14. As shown in FIG. The heat transferred to the high-temperature evaporator 14 becomes a heat source for generating a heat medium for the adsorber in the high-temperature evaporator 14 . A pump 15c for flowing the heat medium is attached to the pipe 15b. Note that the heat source that generates heat is not limited to the gas engine 15a, and may be waste heat that has no other use, as long as it has the amount of heat to generate the heat medium for the adsorber.

Condenser 16 condenses the water vapor discharged from each of adsorbers 11 and 12 . Inside the condenser 16 is housed a heat exchanger 16a to which condensation heat of water vapor is transmitted. The heat exchanger 16 a is connected to the indoor unit 17 or the outdoor unit 18 via two switching valves 23 and 24 . A pipe connected to the heat exchanger 16a of the condenser 16 is attached with a pump 16b for pressurizing the heat medium for temperature control flowing through the heat exchanger 16a. Liquid water produced by condensation of water vapor in the condenser 16 is sent to the low-temperature evaporator 13 or the high-temperature evaporator 14 through a flow path (not shown).

The indoor unit 17 is a radiator placed in a room to be air-conditioned. The indoor unit 17 is connected to the low-temperature evaporator 13 or the condenser 16 via two switching valves 23,24. When the indoor unit 17 is connected to the low-temperature evaporator 13 by switching between the two switching valves 23 and 24, the vaporization heat (cold heat) generated when water vapor is generated is transmitted to the indoor unit 17. Accordingly, when indoor air is introduced into the interior of the indoor unit 17 by the fan 17a, air having a temperature lower than the room temperature is generated. When the indoor unit 17 is connected to the condenser 16 by switching the two switching valves 23 and 24 , condensation heat (thermal heat) of water vapor is transferred to the indoor unit 17 . As a result, when indoor air is introduced into the indoor unit 17, air having a higher temperature than the room temperature is generated.

The outdoor unit 18 is a radiator placed outdoors. The outdoor unit 18 is connected to the low-temperature evaporator 13 or the condenser 16 via two switching valves 23,24. When the outdoor unit 18 is connected to the low-temperature evaporator 13 by switching between the two switching valves 23 and 24, the heat of vaporization when water vapor is generated is transmitted to the outdoor unit 18. As a result, when outdoor air is introduced into the outdoor unit 18 by the fan 18a, air having a temperature lower than room temperature is released from the outdoor unit 18 to the outside. When the outdoor unit 18 is connected to the condenser 16 by switching between the two switching valves 23 and 24, the heat of condensation of water vapor is transmitted to the outdoor unit 18, so that air having a higher temperature than the room temperature flows from the outdoor unit 18. released outdoors.

The steam valve 21 includes a plurality of valves 21a, 21b used in combination. The steam valve 21 controls the entry and exit of steam in the adsorbers 11 and 12 by appropriately setting the connection destinations of the plurality of pipes connected to the steam valve 21 . For example, the steam generated by the low-temperature evaporator 13 is supplied to either one of the adsorbers 11 and 12 via the steam valve 21 . The water vapor in the adsorbers 11 and 12 is sent to the condenser 16 via the vapor valve 21 . The vapor valve 21 directly connects the inside of the adsorber 11 and the inside of the adsorber 12 . As a result, the difference between the pressure of water vapor in the adsorber 11 and the pressure of water vapor in the adsorber 12 allows the water vapor to move from the side of the high-pressure adsorber to the side of the low-pressure adsorber.

The heat medium valve 22 includes a plurality of valves 22a and 22b used in combination. By appropriately setting the connection destinations of the plurality of pipes connected to the heat medium valve 22, the heat medium valve 22 is configured to transfer the adsorber heat in the heat exchangers 11b and 12b of the adsorbers 11 and 12, respectively. Controls media entry and exit. For example, steam generated in the high-temperature evaporator 14 is sent to one of the heat exchangers of the adsorbers 11 and 12 via the heat medium valve 22 . The adsorber heat medium in the heat exchangers 11 b and 12 b is sent to the condenser 16 via the heat medium valve 22 . The heat medium valve 22 directly connects the heat exchanger 11 b of the adsorber 11 and the heat exchanger 12 b of the adsorber 12 . As a result, due to the difference between the pressure of the adsorber heat medium of the heat exchanger 11b and the pressure of the adsorber heat medium of the heat exchanger 12b, the heat for the adsorber is transferred from the high temperature and high pressure heat exchanger side to the low temperature and low pressure heat exchanger side. Media can be moved.

The control unit 25 has a CPU (not shown) and a ROM/RAM. The control unit 25 is electrically connected to the heat supply unit 15 , the indoor unit 17 , the outdoor unit 18 , the steam valve 21 , the heat medium valve 22 , and the switching valves 23 and 24 . In addition, the controller 25 is electrically connected to the pumps 13b, 15c, 16b, and sensors and valves (not shown) of the adsorption heat pump 1 . The ROM stores a computer program that causes the control unit 25 to execute a control method for the adsorption heat pump. The CPU expands the computer program stored in the ROM into the RAM and executes it to operate the heat supply unit 15 and the like, thereby controlling the adsorption heat pump 1 as a whole.

FIG. 2 is a flow chart showing a control method of the adsorption heat pump in the adsorption heat pump 1. As shown in FIG. FIG. 3 is a diagram for explaining the operation of the adsorption heat pump 1 in the first adsorption/desorption process. FIG. 4 is a diagram for explaining the operation of the adsorption heat pump 1 in the first simultaneous recovery process. FIG. 5 is a diagram for explaining the operation of the adsorption heat pump 1 in the second adsorption/desorption process. FIG. 6 is a diagram for explaining the operation of the adsorption heat pump 1 in the second simultaneous recovery process. Next, a method for controlling the adsorption heat pump in the adsorption heat pump 1 will be described. In the adsorption heat pump 1 of the present embodiment, one of the adsorbers 11 and 12 performs an adsorption step of adsorbing water vapor to the adsorbent, and the other of the adsorbers 11 and 12 desorbs the water vapor adsorbed by the adsorbent. Perform the desorption process to The adsorption heat pump 1 having two adsorbers can continuously generate cold heat and heat by switching the adsorber that performs the adsorption process at regular intervals. The method of controlling the adsorption heat pump in the adsorption heat pump 1 shown in FIG. Terminates when the request to do so is cancelled. In the control method of the adsorption heat pump 1, when a request to cool or heat the indoor air is input to the control unit 25, the heat supply unit 15 is activated. This causes the gas engine 15a to generate heat.

In the control method of the adsorption heat pump 1, first, while the adsorption step is performed in the adsorber 11, the desorption step is performed in the adsorber 12 (step S11 in FIG. 2: first adsorption/desorption step). The controller 25 controls the steam valve 21 so that the steam in the low-temperature evaporator 13 is introduced into the adsorber 11 and the adsorber heat medium in the high-temperature evaporator 14 is introduced into the heat exchanger 12 b of the adsorber 12 . and the connection destination of the piping in the heat medium valve 22 is set.

In the block diagrams of the adsorption heat pump 1 shown in FIGS. 3 to 6, the pipes through which fluid is flowing are classified according to the type of fluid and described as follows, and the pipes through which no fluid is flowing are indicated by dashed lines. . In addition, the direction of the flow of the piping through which water vapor is flowing is indicated by an arrow.
Heat medium for temperature control (water containing antifreeze): double-dot chain line Heat medium for adsorber (relatively high temperature steam): solid line Heat medium for steam (water containing antifreeze): dashed line Adsorbate (relatively low temperature water vapor): solid line

In the first adsorption/desorption step, as shown in FIG. It is introduced through the pipe 32 via the valve 21a. The water vapor introduced into the adsorber 11 is adsorbed by the adsorbent 11 a of the adsorber 11 . At this time, the heat of adsorption generated in the adsorbent 11a heats the adsorber heat medium in the heat exchanger 11b. The heated adsorber heat medium passes through the pipe 33 and is sent to the condenser 16 via the valve 22 a of the heat medium valve 22 .

In the first adsorption/desorption step, in the adsorber 12, as shown in FIG. It is supplied to the heat exchanger 12b via the valve 22b and the pipe 42. As a result, the adsorbent 12a is heated and, for example, water remaining adsorbed on the adsorbent 12a due to the previous operation is desorbed. The water desorbed from the adsorbent 12 a turns into gaseous water vapor, passes through the pipe 43 , the valve 21 b of the vapor valve 21 , the pipe 44 , and is sent to the condenser 16 .

In the first adsorption/desorption step, when water vapor is generated in the low-temperature evaporator 13, the heat of vaporization of water cools the heat medium for temperature control flowing through the heat exchanger 13a. The cooled heat medium for temperature adjustment passes through pipes 34 and 35 and is sent to the indoor unit 17 . The indoor unit 17 cools the indoor air sent by the fan 17a. The heat medium for temperature control that has flowed through the indoor unit 17 returns to the low-temperature evaporator 13 through pipes 36 and 37 .

In the condenser 16, the heat medium for the adsorber (steam) sent from the heat exchanger 11b of the adsorber 11 and the condensation heat of the steam generated when the steam sent from the adsorber 12 is condensed are heat exchanged. The heat medium for temperature control flowing through the vessel 16a is heated. The heated heat medium for temperature control passes through pipes 45 and 46 and is sent to the outdoor unit 18 . The outdoor unit 18 radiates heat using the outdoor air sent by the fan 18a. The heat medium for temperature control that has flowed through the outdoor unit 18 returns to the condenser 16 through pipes 47 and 48 .

Next, the water vapor in the adsorber 12 is sent to the adsorber 11, and the heat of the heat exchanger 12b of the adsorber 12 is sent to the heat exchanger 11b of the adsorber 11 (step S12 in FIG. 2: first simultaneous recovery process). The control unit 25 controls the steam valve 21 and the heat exchanger 11 so that the steam remaining in the adsorber 12 is sent to the adsorber 11 and the heat medium for the adsorber in the heat exchanger 12b is sent to the heat exchanger 11b. The connection destination of the piping in the heat medium valve 22 is set.

In the first simultaneous recovery step, the controller 25 directly connects the inside of the adsorber 12 and the inside of the adsorber 11 using the pipe 43, the steam valve 21, and the pipe 32, as shown in FIG. . Here, "directly connecting" means connecting so as to reduce thermal change with respect to flowing fluid, for example, connecting without passing through a radiator. Adsorber 11 has just finished the adsorption step in step S11, and the pressure of water vapor in adsorber 11 is relatively low. The pressure of water vapor in 12 is relatively high. Accordingly, when the inside of the adsorber 11 and the inside of the adsorber 12 are connected, steam is supplied from the adsorber 12 toward the adsorber 11 due to the pressure difference of the steam (vapor recovery). The water vapor supplied to the adsorber 11 is adsorbed by the adsorbent 11a immediately after the adsorption step. Therefore, the adsorber 11 can adsorb more water vapor before the next step. In addition, since the adsorber 12 can further desorb water vapor before the next adsorption step, the operating range can be widened.

Further, in the first simultaneous recovery step, as shown in FIG. 11 is connected to the heat exchanger 11b. Adsorber 11 has just finished the adsorption step and the pressure in heat exchanger 11b is relatively low, while adsorber 12 has just finished the desorption step and the pressure in heat exchanger 12b is relatively high. . As a result, when the heat exchanger 12b and the heat exchanger 11b are connected, high-temperature steam moves from the heat exchanger 12b toward the heat exchanger 11b due to the pressure difference, and the heat of the heat exchanger 12b moves (visible). heat recovery). In this embodiment, relatively high-temperature steam in the heat exchanger 12b moves toward the heat exchanger 11b. Therefore, in the adsorber 11, the adsorbent 11a can be heated via the heat exchanger 11b before the next step. In the first simultaneous recovery step, in this way, the transfer of water vapor between the adsorbers 11 and 12 (vapor recovery) and the heat exchange between the heat exchangers 11b and 12b ( sensible heat recovery) are performed in parallel.

Next, the adsorption step is performed in the adsorber 12 while performing the desorption step in the adsorber 11 (step S13 in FIG. 2: second adsorption/desorption step). The controller 25 controls the vapor valve 21 and the heat medium so that the vapor from the low-temperature evaporator 13 is introduced into the adsorber 12 and the vapor from the high-temperature evaporator 14 is introduced into the heat exchanger 11 b of the adsorber 11 . Set the connection destination of the pipe in the valve 22 for use.

In the second adsorption/desorption step, in the adsorber 11, as shown in FIG. 33 to the heat exchanger 11b. Thereby, the adsorbent 11a is heated to desorb the water vapor adsorbed by the adsorbent 11a in the first adsorption/desorption step. The water vapor desorbed from the adsorbent 11 a passes through the pipe 32 , the valve 21 a of the vapor valve 21 , the pipe 44 , and is sent to the condenser 16 . In the adsorber 12, as shown in FIG. 5, the relatively low-temperature steam generated in the low-temperature evaporator 13 passes through the pipe 31, the valve 21b of the steam valve 21, and the pipe 43. be introduced. In the adsorber 12, the adsorption heat generated when the water vapor introduced into the adsorber 12 is adsorbed by the adsorbent 12a heats the adsorber heat medium in the heat exchanger 12b. The heated heat medium for the adsorber passes through the pipe 42 , the valve 22 b of the heat medium valve 22 , the pipe 49 , and is sent to the condenser 16 .

In the second adsorption/desorption process, the heat of vaporization of water in the low-temperature evaporator 13 cools the temperature-regulating heat medium flowing through the heat exchanger 13a, and in the indoor unit 17, cools the indoor air sent by the fan 17a. The heat of condensation of the water vapor in the condenser 16 heats the heat medium for temperature control flowing through the heat exchanger 16a, and is released to the outside in the outdoor unit 18 using the outdoor air sent by the fan 18a.

Next, the water vapor in the adsorber 11 is sent to the adsorber 12, and the heat of the heat exchanger 11b of the adsorber 11 is sent to the heat exchanger 12b of the adsorber 12 (step S14 in FIG. 2: second simultaneous recovery process). The control unit 25 controls the steam valve 21 and the heat exchanger 12 so that the steam remaining in the adsorber 11 is sent to the adsorber 12 and the heat medium for the adsorber in the heat exchanger 11b is sent to the heat exchanger 12b. The connection destination of the piping in the heat medium valve 22 is set.

In the second simultaneous recovery step, as shown in FIG. The heat exchanger 11b of the adsorber 11 and the heat exchanger 12b of the adsorber 12 are connected by using the pipe 33, the heat medium valve 22, and the pipe . As a result, steam is supplied from the adsorber 11 to the adsorber 12 due to the steam pressure difference, and at the same time, the steam moves from the heat exchanger 11b to the heat exchanger 12b due to the pressure difference, thereby heat exchange. The heat of the heat exchanger 11b moves from the heat exchanger 11b to the heat exchanger 12b. As a result, in the adsorber 12, the adsorbent 12a adsorbs water vapor and is heated via the heat exchanger 12b before the next step. Thus, in the second simultaneous recovery step, the transfer of water vapor between the adsorbers 11 and 12 and the heat exchange between the heat exchangers 11b and 12b are performed in parallel. .

In the control method of the adsorption heat pump 1 described above, the mode in which the indoor air is cooled by the indoor unit 17 has been described. In the adsorption heat pump 1 of this embodiment, by switching the two switching valves 23 and 24, the indoor unit 17 and the condenser 16 are connected, and by connecting the outdoor unit 18 and the low-temperature evaporator 13, the indoor The air in the room can be warmed by the machine 17. - 特許庁

FIG. 7 is a diagram showing comparison results of thermal COP ratios. FIG. 7 shows the comparison result of the heat COP ratio, which is the ratio of the cold output to the input heat amount, in the adsorption heat pump that generates cold (see the vertical axis in FIG. 7). FIG. 7 shows the thermal COP ratio as "simultaneous recovery" when switching between adsorption and desorption in a pair of adsorbers is performed by the adsorption heat pump control method of the present embodiment. Further, in FIG. 7, as a comparative example, the thermal COP ratio in a control method that only stops adsorption and desorption during switching is shown as "standby", and the thermal COP ratio in a control method that recovers only sensible heat during switching is shown. The heat COP ratio in the control method of recovering only steam at the time of switching is indicated as "recover only steam" as "recover only sensible heat". Further, as another comparative example, the heat COP ratio in the control method of recovering the sensible heat after recovering the steam at the time of switching is indicated as "recovery of sensible heat after recovery of steam". The thermal COP ratios in these control methods shown in FIG. 7 indicate calculated values at each of three environmental temperatures (25° C., 35° C., and 40° C.).

As shown in FIG. 7, in "recovery of sensible heat only", the thermal COP ratio is improved by about 12.2 to 17.5% compared to "standby", and in "recovery of steam only", about 12.4 to It became clear that it improved by 29.2%. It was found that the thermal COP ratio is improved by about 20.9 to 39.2% in "sensible heat recovery after steam recovery". In the "simultaneous recovery" of this embodiment, the thermal COP ratio is improved by about 23.6 to 44.9% compared to the "standby", and among the control methods compared this time, the thermal COP ratio is improved the most. It became clear that It was also found that the degree of improvement in the thermal COP ratio in the "simultaneous recovery" becomes even more remarkable as the environmental temperature rises, as shown in FIG. As described above, the adsorption heat pump control method of the present embodiment was found to be effective in that the thermal COP ratio was significantly improved as compared with the control method of the comparative example.

FIG. 8 is a diagram showing a comparison result of the cold-heat output ratio. In FIG. 8, when controlled by each control method shown in FIG. 7, the magnitude of cold heat output from the adsorption heat pump is expressed as a ratio (“cold heat output ratio”). As shown in FIG. 8, in "recovery of sensible heat only", the cold output ratio is improved by about 2.0 to 4.7% compared to "standby", and in "recovery of steam only", the cold output ratio is It was found to be improved by about 6.9 to 21.3%. However, it has been clarified that the cold heat output ratio is improved by about 3.0 to 15.3% in "sensible heat recovery after steam recovery" and is lower than that in "steam only recovery". It is considered that this is because the operating time of the low-temperature evaporator is shortened by performing sensible heat recovery following steam recovery. On the other hand, in "simultaneous recovery", the cold output ratio was improved by about 8.8 to 23.5% compared to "standby", and it was clarified that the cold output ratio improved the most. In addition, as shown in FIG. 8, it was also found that the degree of improvement in the cooling/heat output ratio in the "simultaneous recovery" becomes more pronounced as the environmental temperature rises. As described above, the control method of the adsorption heat pump according to the present embodiment was found to be effective in that the cold heat output ratio was greatly improved as compared with the control method of the comparative example.

According to the control method of the adsorption heat pump of the present embodiment described above, for example, the adsorbent 11a of the adsorber 11 is caused to adsorb water vapor, and the adsorbent 12a of the adsorber 12 is caused to absorb water vapor. After the first adsorption/desorption step of desorbing from 12a, as the first simultaneous recovery step, vapor recovery by moving adsorbed vapor from adsorber 12 to adsorber 11 and sensible heat recovery from adsorber 12 to adsorber 11 are performed. . In an adsorption heat pump having two adsorbers, such as the adsorption heat pump 1, the time during which the adsorbate is supplied to the adsorbent and the time during which the adsorbent is heated alternately in each of the two adsorbers. is set to Therefore, for example, when the time during which water vapor is supplied to the adsorber 11 has passed, the water vapor remaining in the adsorber 12 that causes water vapor to be adsorbed on the adsorbent 12a in the next time is moved to the adsorber 11, and The vapor is recovered by being adsorbed on the adsorbent 11a of 11. FIG. As a result, the adsorbent 12a can further desorb water vapor before the water vapor is supplied to the adsorber 12, so that the operating range of the adsorbent 12a is widened and the adsorption capacity of the adsorbent 12a can be improved. can. Further, for example, when the time for heating the adsorbent 12a of the adsorber 12 has passed, the sensible heat of the adsorbent 12a that has been heated is transferred to the adsorber 11 where the adsorbent 11a is heated in the next time. sensible heat recovery for heating the adsorbent 11a of the adsorber 11 is performed. As a result, the sensible heat of the adsorbent 12a can be effectively used to reduce the amount of heat for heating the adsorber 11 in the next time. Therefore, sensible heat loss can be suppressed and the amount of heat input to the adsorption heat pump system can be reduced, thereby improving system efficiency. Furthermore, in the adsorption heat pump control method of the present embodiment, during the switching time of the adsorber set between the time during which the adsorbate is supplied to the adsorbent and the time during which the adsorbent is heated, vapor recovery and sensible heat are generated. Collect in parallel. In this case, the adsorber switching time is the sum of the time for steam recovery and the time for sensible heat recovery. If the switching time, which is the sum of the time for steam recovery and the time for sensible heat recovery, is shortened, the low-temperature evaporator 13 for supplying water vapor to the adsorbers 11 and 12 and the water vapor desorbed from the adsorbents 11a and 12a are reduced. The operating time of the condenser 16 that condenses the Thereby, the cooling and heating capacity of the adsorption heat pump 1 can be improved.

Further, according to the computer program of the present embodiment, as described above, for example, vapor recovery can be performed by further desorbing the water vapor remaining in the adsorber 11 before the water vapor is supplied to the adsorber 12. , the adsorption capacity of the adsorbents 11a and 12a can be improved. Moreover, since sensible heat recovery can be performed by effectively utilizing the sensible heat of the adsorbent 12a provided in the adsorber 12, sensible heat loss can be suppressed and system efficiency can be improved. Furthermore, since steam recovery and sensible heat recovery are performed in parallel, the switching time, which is the sum of the time for steam recovery and the time for sensible heat recovery, can be shortened, and the operating time of the low-temperature evaporator 13 and the condenser 16 can be lengthened. can be done. Therefore, the cooling and heating capacity of the adsorption heat pump 1 can be improved. As described above, the computer program of the present embodiment suppresses sensible heat loss, improves the adsorption/desorption capacity of the adsorbents 11a and 12a, and controls the control unit 25 so as to improve the cooling/heating capacity. , the operation of the adsorption heat pump 1 can be controlled.

Further, according to the adsorption heat pump of the present embodiment, for example, the controller 25 causes the adsorbent 11a to adsorb water vapor, desorbs water vapor from the adsorbent 12a, and then performs sensible heat recovery and steam recovery. As a result, vapor recovery can be performed by desorbing the water vapor remaining in the adsorber 12 before the water vapor is supplied to the adsorber 12, so that the adsorption capacity of the adsorbent 12a can be improved. Further, for example, sensible heat recovery can be performed by effectively utilizing the sensible heat of the adsorbent 12a provided in the adsorber 12, so sensible heat loss can be suppressed and system efficiency can be improved. Furthermore, since the control unit 25 performs steam recovery and sensible heat recovery in parallel, the switching time, which is the sum of the steam recovery time and the sensible heat recovery time, is shortened, and the low-temperature evaporator 13 and the condenser 16 are operated. can lengthen the time. Thereby, the adsorption heat pump 1 can improve the cooling and heating capacity. Therefore, the adsorption heat pump 1 can improve the cooling and heating capacity while suppressing sensible heat loss and improving the adsorption and desorption capacity of the adsorbents 11a and 12a.

<Second embodiment>
FIG. 9 is a flow chart of the control method of the adsorption heat pump of the second embodiment. The adsorption heat pump control method of the second embodiment is different from the adsorption heat pump control method of the first embodiment (FIG. 2) in that the vapor recovery step is provided before the simultaneous recovery step, and that the simultaneous recovery step is performed. The difference is that a sensible heat recovery step is provided later.

In the control method of the adsorption heat pump 2 of the second embodiment, first, similarly to step S11 of the control method of the first embodiment, the adsorption step is performed in the adsorber 11 while the desorption step is performed in the adsorber 12 ( Step S21: first adsorption/desorption step). The controller 25 controls the vapor valve 21 and the heat medium so that the vapor from the low-temperature evaporator 13 is introduced into the adsorber 11 and the vapor from the high-temperature evaporator 14 is introduced into the heat exchanger 12 b of the adsorber 12 . Set the connection destination of the pipe in the valve 22 for use. As a result, the adsorbent 11a of the adsorber 11 adsorbs water vapor, while the adsorbent 12a desorbs the water vapor adsorbed on the adsorbent 12a.

Next, the water vapor in the adsorber 12 is sent into the adsorber 11 (step S22: first steam recovery step). The control unit 25 sets the connecting destination of the piping in the steam valve 21 so that the steam remaining in the adsorber 12 is sent to the adsorber 11 . This allows vapor recovery to precede simultaneous recovery.

FIG. 10 is a diagram for explaining the operation of the adsorption heat pump 2 in the first vapor recovery step. The classification of fluid flow shown in FIG. 10 is the same as in FIG. 3 of the first embodiment. In the first vapor recovery step, the controller 25 connects the inside of the adsorber 12 and the inside of the adsorber 11 using the pipe 43 , the vapor valve 21 and the pipe 32 . As a result, steam is supplied from the adsorber 12 toward the adsorber 11 due to the pressure difference of the steam. The water vapor supplied to the adsorber 11 is adsorbed by the adsorbent 11a.

Next, as in step S12 of the control method of the first embodiment, the water vapor in the adsorber 12 is sent to the adsorber 11, and at the same time, the heat in the heat exchanger 12b of the adsorber 12 is transferred to the adsorber 11. sent to vessel 11b (step S23: first simultaneous recovery step). From the state of step S22, that is, the state in which the inside of the adsorber 11 and the inside of the adsorber 12 are connected, the control unit 25 uses the pipe 42, the heat medium valve 22, and the pipe 33 to perform heat exchange. 12b and the heat exchanger 11b are connected. Thereby, the transfer of water vapor between the adsorbers 11 and 12 and the heat exchange between the heat exchangers 11b and 12b are performed in parallel.

Next, the heat of the heat exchanger 12b of the adsorber 12 is sent to the heat exchanger 11b of the adsorber 11 (step S24: first sensible heat recovery step). From the state of step S23, the control unit 25 sets the connection destination of the piping in the steam valve 21 so that the connection between the inside of the adsorption device 11 and the inside of the adsorption device 12 is released. At this time, in order to maintain the state in which the heat exchangers 11b and 12b are connected, the heat medium for the adsorber in the heat exchanger 12b is sent to the heat exchanger 11b. As a result, sensible heat recovery continues.

FIG. 11 is a diagram for explaining the operation of the adsorption heat pump in the first sensible heat recovery step. The classification of fluid flow shown in FIG. 11 is the same as in FIG. 3 of the first embodiment. In the first sensible heat recovery step, the control unit 25 connects the heat exchanger 11b of the adsorber 11 and the heat exchanger 12b of the adsorber 12 using the pipe 42, the heat medium valve 22, and the pipe 33. Connecting. As a result, high-temperature steam moves from the heat exchanger 12b toward the heat exchanger 11b due to the pressure difference, and the heat in the heat exchanger 12b moves.

Next, as in step S13 of the control method of the first embodiment, while performing the desorption step in the adsorber 11, the adsorption step is performed in the adsorber 12 (step S25: second adsorption/desorption step). The controller 25 controls the vapor valve 21 and the heat medium so that the vapor from the low-temperature evaporator 13 is introduced into the adsorber 12 and the vapor from the high-temperature evaporator 14 is introduced into the heat exchanger 11 b of the adsorber 11 . Set the connection destination of the pipe in the valve 22 for use.

Next, the water vapor in the adsorber 11 is sent into the adsorber 12 (step S26: second vapor recovery step). The control unit 25 sets the connecting destination of the piping in the steam valve 21 so that the steam remaining in the adsorber 11 is sent to the adsorber 12 . As a result, steam is supplied from the adsorber 11 to the adsorber 12 due to the pressure difference of the steam. The water vapor supplied to the adsorber 12 is adsorbed by the adsorbent 12a. This allows vapor recovery to precede simultaneous recovery.

Next, as in step S14 of the control method of the first embodiment, the water vapor in the adsorber 11 is sent to the adsorber 12, and at the same time the heat in the heat exchanger 11b of the adsorber 11 is transferred to the heat exchanger 12. It is sent to the container 12b (step S27: second simultaneous recovery step). The control unit 25 moves the heat exchanger 11b and It connects with the heat exchanger 12b. Thereby, the transfer of water vapor between the adsorbers 11 and 12 and the heat exchange between the heat exchangers 11b and 12b are performed in parallel.

Next, the heat of the heat exchanger 11b of the adsorber 11 is sent to the heat exchanger 11b of the adsorber 11 (step S28: second sensible heat recovery step). From the state of step S27, the control unit 25 controls the combination of pipes in the steam valve 21 and disconnects the inside of the adsorber 11 and the inside of the adsorber 12. FIG. At this time, the state in which the heat exchanger 11b of the adsorber 11 and the heat exchanger 12b of the adsorber 12 are connected is maintained. Sent. As a result, sensible heat recovery continues.

According to the control method of the adsorption heat pump 2 of the present embodiment described above, steam recovery is first started (vapor recovery step), and sensible heat recovery is started while steam recovery is continuing. (simultaneous recovery process). Depending on the state of the adsorption heat pump, the time required for vapor recovery may be longer than the time required for sensible heat recovery. Therefore, steam can be sufficiently recovered by performing steam recovery before steam recovery and sensible heat recovery are performed in parallel. As a result, the utilization rate of water vapor in the entire adsorption heat pump 1 can be improved.

Further, according to the control method of the adsorption heat pump 2 of the present embodiment, when steam recovery and sensible heat recovery are performed in parallel (simultaneous recovery step), steam recovery is stopped and sensible heat recovery is continued. (sensible heat recovery step). Depending on the state of the adsorption heat pump, the time required for sensible heat recovery may be longer than the time required for vapor recovery. Therefore, the sensible heat can be sufficiently recovered by performing the sensible heat recovery after performing the steam recovery and the sensible heat recovery in parallel. As a result, the recovery rate of sensible heat in the entire adsorption heat pump 1 can be improved.

<Third Embodiment>
FIG. 12 is a block diagram showing a schematic configuration of the adsorption heat pump of the third embodiment. The adsorption heat pump of the third embodiment differs from the adsorption heat pump of the first embodiment (FIG. 1) in that it includes a radiator that releases the heat of the adsorbent to the outside.

The adsorption heat pump 3 of this embodiment includes a pair of adsorbers 51 and 52, a low-temperature evaporator 53, a heat supply unit 55, a condenser 56, an indoor unit 57, an outdoor unit 58, and a radiator 59. , a steam valve 61, a heat medium valve 62, 63, 64, a control unit 65, a plurality of pipes connecting them, a valve for controlling the flow of fluid, a plurality of pumps for pumping the fluid, Prepare.

The adsorbers 51 and 52 have the same configuration as the adsorbers 11 and 12 of the first embodiment. That is, the adsorber 51 and the adsorber 52 have approximately the same inner volume, and the adsorber 51 accommodates an adsorbent 51a and a heat exchanger 51b. Inside the adsorber 52, an adsorbent 52a and a heat exchanger 52b are accommodated.

In this embodiment, the heat exchanger 51b of the adsorber 51 is connected to the heat medium valves 62 and 63 . As a result, the heat medium flowing through the heat exchanger 51b flows from the heat medium valve 62 toward the heat medium valve 63 or from the heat medium valve 63 toward the heat medium valve 62 . Also, the heat exchanger 52b of the adsorber 52 is connected to the heat medium valves 62 and 64 . As a result, the heat medium flowing through the heat exchanger 52b flows from the heat medium valve 62 toward the heat medium valve 64 or from the heat medium valve 64 toward the heat medium valve 62 .

A low temperature evaporator 53 is connected to each of the adsorbers 51 and 52 via a vapor valve 61 . The low-temperature evaporator 53 generates relatively low-temperature water vapor (adsorbate vapor) from liquid water by having the adsorbate vapor adsorbed by the adsorbers 51 and 52 in the adsorption step and the internal pressure being reduced. . The low-temperature evaporator 53 accommodates a heat exchanger 53a to which vaporization heat (cold heat) is transmitted when steam is generated. The heat exchanger 53a is connected to an indoor unit 57 via a pipe 53b through which a heat medium flows. The pipe 53b is attached with a pump 53c for pressure-feeding the heat medium for temperature control flowing through the heat exchanger 53a.

The heat supply unit 55 includes a gas engine 55a and pipes 55b, 55c, 55d, and 55e. Each of the pipes 55b, 55c, 55d, and 55e is filled with water containing antifreeze, for example. The piping 55b is connected to the gas engine 55a and the heat medium valve 63, and flows the heat medium pumped by the pump 55f and supplied to the heat exchanger 51b. The piping 55c is connected to the gas engine 55a and the heat medium valve 64, and flows the heat medium pumped by the pump 55f and supplied to the heat exchanger 52b. The pipe 55d is connected to the gas engine 55a and the heat medium valve 62, through which the heat medium discharged from the heat exchanger 51b flows. The pipe 55e is connected to the gas engine 55a and the heat medium valve 62, through which the heat medium discharged from the heat exchanger 52b flows. Here, the water containing the antifreeze sealed in the pipes 55b, 55c, 55d, and 55e is called a heat medium for the adsorber.

The condenser 56 condenses the steam discharged from each of the adsorbers 51 and 52 . Liquid water produced by condensation of water vapor is sent to the low-temperature evaporator 53 through a channel (not shown). Inside the condenser 56, there is accommodated a heat exchanger 56a to which condensation heat (thermal heat) of water vapor is transmitted. The heat exchanger 56 a is connected to the outdoor unit 58 . A pipe 56b connecting the heat exchanger 56a and the outdoor unit 58 is attached with a pump 56c for pressurizing the heat medium for temperature control flowing through the heat exchanger 56a.

The indoor unit 57 has the same configuration as the indoor unit 17 of the first embodiment. The indoor unit 57 uses cold heat supplied from the low-temperature evaporator 53 to cool the indoor air introduced into the interior of the indoor unit 57 by the fan 57a. The outdoor unit 58 has the same configuration as the outdoor unit 18 of the first embodiment. The outdoor unit 58 uses the heat supplied from the condenser 56 to heat the air introduced into the outdoor unit 58 by the fan 58a, and releases the air to the outside.

The radiator 59 is a heat exchanger connected to the heat medium valve 62 and has the same configuration as the indoor unit 57 . The heat radiator 59 cools the heat medium discharged from the heat exchangers 51b and 52b, which has been warmed by the heat of adsorption generated in the adsorption process, by using the flow of air generated by the rotation of the fan 59a.

The steam valve 61 has the same configuration as the steam valve 21 of the first embodiment, and includes a plurality of valves 61a and 61b used in combination. The steam valve 61 controls the entry and exit of steam in the adsorbers 51 and 52 by appropriately setting connection destinations of a plurality of pipes connected to the steam valve 61 . The vapor valve 61 directly connects the inside of the adsorber 51 and the inside of the adsorber 52 . As a result, due to the difference between the pressure of water vapor in the adsorber 51 and the pressure of water vapor in the adsorber 52, water vapor can be moved from the side of the high-pressure adsorber to the side of the low-pressure adsorber.

The heat medium valve 62 has the same configuration as the heat medium valve 22 of the first embodiment, and includes a plurality of valves 62a and 62b used in combination. The heat medium valve 62 controls the entrance and exit of the adsorber heat medium in the heat exchangers 51b and 52b by appropriately setting the connection destinations of the plurality of pipes connected to the heat medium valve 62 . The heat medium valve 62 directly connects the heat exchanger 51b and the heat exchanger 52b. As a result, due to the difference between the temperature of the adsorber heat medium of the heat exchanger 51b and the temperature of the adsorber heat medium of the heat exchanger 52b, the heat medium for the adsorber is transferred from the high-temperature heat exchanger side to the low-pressure heat exchanger side. can be moved.

The heat medium valve 63 is connected to a side of the heat exchanger 51b opposite to the side to which the heat medium valve 62 is connected. The heat medium valve 63 is connected to the heat supply section 55 via a pipe 55b. The heat medium valve 63 supplies the heat medium supplied by the heat supply unit 55 to the heat exchanger 51 b or sends the heat medium that has passed through the heat exchanger 51 b to the radiator 59 . The heat medium valve 63 moves the heat medium from the heat exchanger 52b via the pump 65a and the heat medium valve 64 .

The heat medium valve 64 is connected to a side of the heat exchanger 52b opposite to the side to which the heat medium valve 62 is connected. The heat medium valve 64 is connected to the heat supply section 55 via a pipe 55c. The heat medium valve 64 supplies the heat medium supplied from the heat supply unit 55 to the heat exchanger 52b and sends the heat medium that has passed through the heat exchanger 51b to the radiator 59 . The heat medium valve 64 moves the heat medium to the heat exchanger 51 b via the pump 65 a and the heat medium valve 63 .

The control unit 65 has a CPU (not shown) and a ROM/RAM. The control unit 65 is electrically connected to the heat supply unit 55, the indoor unit 57, the outdoor unit 58, the steam valve 61, and the heating medium valves 62, 63, 64. The controller 65 is also electrically connected to the plurality of pumps 53c, 55f, 56c, 59b, and 65a, as well as sensors and valves (not shown) of the adsorption heat pump 1 . The control unit 65 controls the overall operation of the adsorption heat pump 3 by loading the computer program stored in the ROM into the RAM and executing it.

A pump 65a whose operation is controlled by the control unit 65 is attached to a pipe 65b that connects the heat medium valve 63 and the heat medium valve 64 . The pump 65a is a pump capable of pumping in both directions. The pump 65 a pressurizes and pumps the heat medium flowing between the heat medium valve 63 and the heat medium valve 64 .

Next, a method for controlling the adsorption heat pump in the adsorption heat pump 3 in this embodiment will be described. The control method of the adsorption heat pump in the adsorption heat pump 3 proceeds according to the same flow as in the first embodiment.

FIG. 13 is a diagram for explaining the operation of the adsorption heat pump 3 in the first adsorption/desorption step. The classification of fluid flow shown in FIG. 13 is the same as in FIG. 3 of the first embodiment. In the method of controlling the adsorption heat pump in the adsorption heat pump 3, first, while performing the adsorption step in the adsorber 51, the desorption step is performed in the adsorber 52 (first adsorption/desorption step). In the adsorber 51, relatively low-temperature water vapor (adsorbate vapor) generated from liquid water in the low-temperature evaporator 53 passes through a pipe 71, via a valve 61a of a vapor valve 61, and into a pipe 72. It is introduced through The water vapor introduced into the adsorber 51 is adsorbed by the adsorbent 51 a of the adsorber 51 .

Adsorption heat generated by adsorption of water vapor in the adsorbent 51a heats the adsorber heat medium in the heat exchanger 51b. The heated adsorber heat medium passes through the pipe 73 , the heat medium valve 63 , the pipe 74 , and is sent to the radiator 59 . The adsorber heat medium sent to the radiator 59 is cooled by the air flow generated by the rotation of the fan 59a, passes through the pipe 75, passes through the valve 62a of the heat medium valve 62, passes through the pipe 76, Return to heat exchanger 51b. In FIG. 13, the pipe through which the heat medium for the adsorber flows is indicated by a chain double-dashed line, and the direction of flow of the heat medium for the adsorber is indicated by an arrow.

In the first adsorption/desorption step, in the adsorber 52, the adsorber heat medium supplied by the heat supply unit 55 passes through the pipe 55c and is sent to the heat exchanger 52b via the heat medium valve 64. As a result, the adsorbent 52a is heated, and the water vapor remaining after being adsorbed by the adsorbent 52a is desorbed. The water vapor desorbed from the adsorbent 52 a passes through the pipe 81 , the valve 61 b of the vapor valve 61 , the pipe 82 , and is sent to the condenser 56 .

In the adsorber 52, the adsorber heat medium that has flowed through the heat exchanger 52b passes through the pipe 83, the valve 62b of the heat medium valve 62, the pipes 84 and 55e, and returns to the gas engine 55a. . The adsorber heat medium returned to the gas engine 55a is heated again and sent to the heat exchanger 52b through the pipe 55c.

In the first adsorption/desorption process, vaporization heat (cold heat) of water generated when water vapor is generated in the low-temperature evaporator 53 is sent to the indoor unit 57 by the heat medium for temperature control flowing through the pipe 53b. The indoor unit 57 cools the indoor air sent by the fan 57a. The heat of condensation (thermal heat) of the water vapor sent from the adsorber 52 when it condenses in the condenser 56 is sent to the outdoor unit 58 by the heat medium for temperature control flowing through the pipe 56b. The outdoor unit 58 radiates heat using outdoor air sent by a fan 58a.

FIG. 14 is a diagram for explaining the operation of the adsorption heat pump 3 in the first simultaneous recovery process. The classification of fluid flow shown in FIG. 14 is the same as in FIG. 3 of the first embodiment. Next, the water vapor in the adsorber 52 is sent into the adsorber 51, and the heat of the heat exchanger 52b of the adsorber 52 is sent to the heat exchanger 51b of the adsorber 51 (first simultaneous recovery step). The control unit 65 controls the vapor valve 61 and the heat exchanger 52 so that the vapor remaining in the adsorber 52 is sent to the adsorber 51 and the heat medium for the adsorber in the heat exchanger 52b is sent to the heat exchanger 51b. The connection destinations of the pipes in the heat medium valves 62, 63, and 64 are set. In FIG. 14, the pipe through which the heat medium for the adsorber flows is indicated by a chain double-dashed line, and the direction of flow of the heat medium for the adsorber is indicated by an arrow.

In the first simultaneous recovery step, the controller 65 connects the inside of the adsorber 52 and the inside of the adsorber 51 using the pipe 81 , the vapor valve 61 and the pipe 72 . Since the adsorber 51 has just finished the adsorption step and the adsorber 52 has just finished the desorption step, when the inside of the adsorber 51 and the inside of the adsorber 52 are connected, the pressure difference between the water vapor causes the adsorber 52 to to the adsorber 51 (vapor recovery). The water vapor supplied to the adsorber 51 is adsorbed by the adsorbent 51a. This allows the adsorber 52 to further desorb water vapor before the next adsorption step.

In the first simultaneous recovery step, the control unit 65 uses the pipe 83, the heat medium valve 62, and the pipe 76 to connect the heat exchanger 51b of the adsorber 51 and the heat exchanger 52b of the adsorber 52. to connect. Further, the control unit 65 connects the heat exchanger 51b and the heat exchanger 52b using the pipe 73, the heat medium valve 63, the pipe 65b, the heat medium valve 64, and the pipe 85. As a result, the heat exchangers 51b and 51b form an annular flow path with the plurality of pipes and the heat medium valves 62, 63, and 64. As shown in FIG. Since the adsorber 51 has just finished the adsorption step and the adsorber 52 has just finished the desorption step, when the heat exchanger 51b and the heat exchanger 52b are connected, the temperature difference causes the heat exchanger 52b to The heat of the heat exchanger 12b moves from to the heat exchanger 51b (sensible heat recovery). In this embodiment, the high-temperature heat medium for the adsorber moves from the heat exchanger 52b toward the heat exchanger 51b. Therefore, in the adsorber 51, the adsorbent 51a can be heated via the heat exchanger 51b before the next desorption step. Thus, in the first simultaneous recovery step, the movement of water vapor (vapor recovery) between the adsorbers 51 and 52 and the heat exchange (visible recovery) between the heat exchangers 51b and 52b heat recovery) are performed in parallel.

In the present embodiment, in the first simultaneous recovery step, the controller 65 forms an annular flow path with the gas engine 55a, the pipe 55c, the heat medium valve 64, and the pipes 86 and 55e. Further, the control unit 65 forms an annular flow path with the radiator 59 , the pipe 75 , the valve 62 a of the heat medium valve 62 , the pipe 77 , the heat medium valve 63 , and the pipe 74 . During the first co-recovery step, the adsorber heat transfer medium flows through these annular channels.

FIG. 15 is a diagram for explaining the operation of the adsorption heat pump 3 in the second adsorption/desorption step. The classification of fluid flow shown in FIG. 15 is the same as in FIG. 3 of the first embodiment. Next, while the desorption process is performed in the adsorber 51, the adsorption process is performed in the adsorber 52 (second adsorption/desorption process). The control unit 65 controls the heat exchanger 51 b of the adsorber 51 so that the steam in the low-temperature evaporator 53 is introduced into the adsorber 52 and the heat medium for the adsorber heated by the gas engine 55 a is introduced into the heat exchanger 51 b of the adsorber 51 . The connection destinations of the pipes of the valve 61 and the heat medium valve 62 are set. In FIG. 15, the pipe through which the heat medium for the adsorber flows is indicated by a chain double-dashed line, and the direction of flow of the heat medium for the adsorber is indicated by an arrow.

In the second adsorption/desorption step, in the adsorber 51, the heat medium supplied by the heat supply unit 55 passes through the pipe 55b, passes through the heat medium valve 63, passes through the pipe 73, and is sent to the heat exchanger 51b. . As a result, the adsorbent 51a is heated, and the water vapor adsorbed by the adsorbent 51a is desorbed in the first adsorption/desorption step. The water vapor desorbed from the adsorbent 51 a passes through the pipe 72 , the valve 61 a of the vapor valve 61 , the pipe 82 , and is sent to the condenser 56 .

In the adsorber 52, relatively low-temperature water vapor (adsorbate vapor) generated in the low-temperature evaporator 53 is introduced through the pipe 71, the valve 61b of the vapor valve 61, and the pipe 81. be done. In the adsorber 52, the adsorption heat generated when the water vapor introduced into the adsorber 52 is adsorbed by the adsorbent 52a heats the adsorber heat medium in the heat exchanger 52b. The heated adsorber heat medium passes through the pipe 85 , the heat medium valve 64 , the pipes 87 and 74 , and is sent to the radiator 59 . The heat medium sent to the radiator 59 is cooled by the air flow generated by the rotation of the fan 59a, passes through the pipes 75 and 88, passes through the valve 62b of the heat medium valve 64, passes through the pipe 83, Return to heat exchanger 52b.

In the second adsorption/desorption process, the vaporization heat of water generated when water vapor is generated in the low-temperature evaporator 53 cools the indoor air in the indoor unit 57 . The heat of condensation of water vapor sent from the adsorber 51 is condensed in the condenser 56 and released in the outdoor unit 58 using outdoor air.

Next, the water vapor in the adsorber 51 is sent into the adsorber 52, and the heat of the heat exchanger 51b of the adsorber 51 is sent to the heat exchanger 52b of the adsorber 52 (second simultaneous recovery step). The controller 65 controls the steam flow so that the steam remaining in the adsorber 51 is sent to the adsorber 52 and the heat medium for the adsorber in the heat exchanger 51 b is sent to the heat exchanger 52 b of the adsorber 52 . The connection destinations of the pipes of the valve 61 for heat medium and the valve 62 for heat medium are set.

FIG. 16 is a diagram for explaining the operation of the adsorption heat pump 3 in the second simultaneous recovery process. The classification of fluid flow shown in FIG. 16 is the same as in FIG. 3 of the first embodiment. In the second simultaneous recovery step, the control unit 65 uses the pipe 81, the steam valve 61, and the pipe 72 to connect the inside of the adsorber 51 and the inside of the adsorber 52, and the pipe 76 and the heat medium. The heat exchanger 51 b of the adsorber 51 and the heat exchanger 52 b of the adsorber 52 are connected by using the valve 62 and the pipe 83 . As a result, steam is supplied from the adsorber 51 to the adsorber 52 due to the steam pressure difference, and at the same time, the temperature difference causes the heat of the heat exchanger 51b to move from the heat exchanger 51b to the heat exchanger 52b. do. Therefore, before the next step, in the adsorber 52, the adsorbent 52a is heated through the heat exchanger 52b while adsorbing water vapor. Thus, in the second simultaneous recovery step, the transfer of water vapor between the adsorbers 51 and 52 and the heat exchange between the heat exchangers 51b and 52b are performed in parallel. . In FIG. 16, the piping through which the heat medium for the adsorber flows is indicated by a chain double-dashed line, and the direction of flow of the heat medium for the adsorber is indicated by an arrow.

According to the control method of the adsorption heat pump 3 described above, for example, the adsorbent 51a of the adsorber 51 is caused to adsorb water vapor, and the adsorbent 52a of the adsorber 52 is caused to desorb the water vapor from the adsorbent 52a. After the first adsorption/desorption step, the first simultaneous recovery step is performed. In the first simultaneous recovery step, transfer of water vapor from the adsorber 52 to the adsorber 51 (vapor recovery) and transfer of the heat medium for the adsorber from the heat exchanger 52b to the heat exchanger 51b (sensible heat recovery) are performed. . As a result, the cooling/heating capacity and system efficiency of the adsorption heat pump 3 can be improved.

Further, according to the adsorption heat pump 3 of the present embodiment, the radiator 59 releases to the outside heat of adsorption generated when the adsorbents 51a and 52a adsorb water vapor. As a result, the temperature of the adsorbents 51a and 52a can be lowered while the adsorbents 51a and 52a are adsorbing water vapor, so that the amount of water vapor adsorbed by the adsorbents 51a and 52a can be increased. When the amount of water vapor adsorbed by 51a and 52a increases, the amount of heat of vaporization generated in low-temperature evaporator 53 that supplies water vapor to adsorbers 51 and 52 increases, so the cooling capacity of adsorption heat pump 1 can be improved. .

<Modification of this embodiment>
The present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the scope of the invention. For example, the following modifications are possible.

[Modification 1]
In the above-described embodiment, in the control method of the adsorption heat pump, the adsorption process and the desorption process are performed simultaneously like the first adsorption/desorption process. However, the adsorption step and the desorption step may be performed at different times. For example, depending on the relationship between the upper limit of the adsorption amount of the adsorbent contained in the adsorber and the heat exchange capacity of the heat exchanger, one of the steps may be started first, or may be performed at different times. may It is sufficient that the adsorption step and the desorption step are completed before the simultaneous recovery step. In order to maximize the efficiency of vapor recovery and sensible heat recovery in the simultaneous recovery process, it is desirable that the adsorption process and the desorption process are completed at the same time and the simultaneous recovery process is performed immediately thereafter.

[Modification 2]
In the above-described embodiments, the adsorption heat pump includes a pair of adsorbers, a low-temperature evaporator, a heat supply unit, a condenser, an indoor unit, an outdoor unit, a radiator, a vapor valve, a heat medium valve, a control unit, and the like. and However, the configuration of the adsorption heat pump is not limited to this. A first adsorber containing a first adsorbent, a first heat exchanger for exchanging heat with the first adsorbent, and a second adsorber containing a second adsorbent , a second heat exchanger that exchanges heat with the second adsorbent, and a controller for performing an adsorption step, a desorption step, a vapor recovery step, and a sensible heat recovery step. It is good if there is

The present aspect has been described above based on the embodiments and modifications, but the above-described embodiments are intended to facilitate understanding of the present aspect, and do not limit the present aspect. This aspect may be modified and modified without departing from its spirit and scope of the claims, and this aspect includes equivalents thereof. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 1, 2, 3... Adsorption heat pump 11, 12, 51, 52... Adsorber 11a, 12a, 51a, 52a... Adsorbent 11b, 12b, 51b, 52b... Heat exchanger 13, 53... Low-temperature evaporator 15, 55 DESCRIPTION OF SYMBOLS 16,56...Condenser 17,57...Indoor unit 18,58...Outdoor unit 21,61...Steam valve 22,62...Heat medium valve 25,65...Control part 59...Radiator

Claims (6)

A control method for an adsorption heat pump, comprising:
a first step of supplying an adsorbate to a first adsorbent contained in a first adsorber to adsorb the adsorbate on the first adsorbent;
A second step of heating the second adsorbent contained in the second adsorber to desorb the adsorbate adsorbed on the second adsorbent from the second adsorbent;
after the first step and the second step, vapor recovery by moving adsorbate vapor between the first adsorber and the second adsorber; A third step in which sensible heat recovery for heat exchange with the adsorber is performed in parallel,
Control method for adsorption heat pump. A control method for an adsorption heat pump according to claim 1,
In the third step, the steam recovery is started prior to the sensible heat recovery, and the sensible heat recovery is started during the steam recovery, whereby the steam recovery and the sensible heat recovery are performed. in parallel with
Control method for adsorption heat pump. The adsorption heat pump control method according to claim 1 or 2,
In the third step, after the steam recovery and the sensible heat recovery are performed in parallel, the steam recovery is stopped and the sensible heat recovery is continued.
Control method for adsorption heat pump. A computer program to be executed by a control unit that controls the operation of an adsorption heat pump,
a first function of supplying an adsorbate to a first adsorbent contained in a first adsorber and causing the first adsorbent to adsorb the adsorbate;
A second function of heating the second adsorbent contained in the second adsorber to desorb the adsorbate adsorbed on the second adsorbent from the second adsorbent;
after performing said first function and said second function, vapor recovery by moving adsorbate vapor between said first adsorber and said second adsorber; causing the control unit to perform a sensible heat recovery that performs heat exchange with the adsorber of 2, and a third function that performs in parallel;
computer program. An adsorption heat pump,
a first adsorber containing a first adsorbent;
a first heat exchanger that exchanges heat with the first adsorbent;
a second adsorber containing a second adsorbent;
a second heat exchanger that exchanges heat with the second adsorbent;
Adsorbate is supplied to the first adsorbent to adsorb the adsorbate on the first adsorbent, and the second adsorbent is heated to adsorb the adsorbate on the second adsorbent. after desorbing adsorbate from said second adsorbent, vapor recovery moving adsorbate vapor between said first adsorber and said second adsorber; A control unit that performs in parallel with sensible heat recovery that exchanges heat with the second heat exchanger,
Adsorption heat pump. The adsorption heat pump according to claim 5 further comprises
It is connected to the first heat exchanger and the second heat exchanger, and the heat of adsorption generated when the first adsorbent or the second adsorbent adsorbs adsorbate vapor is released to the outside. with a radiating radiator,
Adsorption heat pump.

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