JP2016038111A - Heat source device with power generating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently utilize electric power by placing a power generating device which uses gas in operation even when supply of electric power from a commercial power source and water is stopped owing to a disaster.SOLUTION: A water supply passage 21 which supplies water to an electric power generating device 1 from a lower side of a hot water storage tank 2 is provided with a cooling device 3 for water. The cooling device 3 is so constituted that a plurality of plate-like heat radiation fins 4 are arranged in a plurality of stages vertically at intervals with one another, plate surfaces thereof are inclined obliquely from a horizontal direction, and the water supply passage penetrate the respective heat radiation fins 4. Water is dripped on an inclined surface of a heat radiation fin 4a in a top stage from, for example, a plastic bottle 6, received by a water receiver 8 provided on a lower end side of the inclined surface of the heat radiation fin 4, and dripped on an inclined surface of a heat radiation fin 4 in a lower stage through a through hole 9 provided in the water receiver 8. A hydrophilic coating agent is provided on inclined surfaces of the respective heat radiation fins 4, and drops of water dripped on the inclined surfaces of the respective heat radiation fins are thereby spread over the inclined surfaces with the hydrophilic coating agent and vaporized so as to improve heat radiation efficiency of the respective heat radiation fins 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat source device with a power generation function including a power generation device and a hot water storage tank.

  Various hot water storage tanks (hot water storage tanks) for storing hot water in the tank and heat source devices including the hot water storage tanks have been proposed (see, for example, Patent Document 1). FIG. 6 shows a heat source including a hot water storage tank. An example of an apparatus is shown. This heat source device has a hot water storage tank 2 and a power generator 1, and the power generator 1 is a fuel cell (FC) such as a polymer electrolyte fuel cell (PEFC) or a solid oxide fuel cell (SOFC). ) Or a gas engine or the like. A fuel cell is a power generation device that generates electricity by reacting hydrogen extracted from a fuel such as city gas with oxygen in the air by a reverse reaction of water electrolysis.

  In addition, this heat source device supplies water from the water supply source to the hot water tank 2 from the lower side of the hot water tank 2, and supplies cooling water to the power generator 1 from the lower side of the hot water tank 2. A water supply passage 21; a heat recovery passage 23 for sending hot water heated by waste heat of the power generator 1 to the hot water tank 2 side and introducing the hot water tank 2 from the upper side of the hot water tank 2; and the hot water tank 2 There is a hot water passage 25 for supplying hot water to the hot water supply destination from the upper side. The hot water passage 25 is connected to a branch passage 29 branched from the water supply source via a connection unit 27, and the connection unit 27 is provided with an electromagnetic valve 26 and the like.

  A passage 30 is connected to the connection unit 27, and a water inlet side of a heat source device that directly supplies hot water to a hot water supply destination through the passage 30 or a hot water heater equipped with a burner or the like is connected to the passage 30. Various configurations have been proposed, such as a heat source device that additionally heats hot water that has passed through an auxiliary heat source device as necessary and supplies hot water to a hot water supply destination. In FIG. 6, reference numeral 24 denotes an overpressure relief passage provided with an overpressure relief valve for releasing the pressure to the outside when the pressure in the hot water tank 2 exceeds the allowable pressure. Reference numeral 28 denotes a drainage passage provided with a drainage valve.

  In this type of heat source device, for example, hot water heated by the waste heat of the power generation device 1 and stored in the hot water storage tank 2 is led out through the hot water passage 25, and this hot water and the water supply source are passed through the branch passage 29. It is possible to supply hot water at a hot water supply set temperature by mixing the derived water with the connecting unit 27 as necessary and supplying the water to the hot water supply destination through the passage 30 as described above. Moreover, since the electric power can be used by supplying the electric power generated by the electric power generation apparatus 1 to the electric power load apparatus of the user, the apparatus is provided with convenience and energy saving.

  The hot water tank 2 is formed with layers Wa, Wb, and Wc having temperatures as shown in the schematic diagram of FIG. 7, for example, and the upper layer (high temperature layer) Wa of the hot water tank 2 includes Hot water of high temperature Ta (for example, 60 ° C.) heated by waste heat generated during power generation of the power generator 1 is stored, and water supplied to the hot water tank 2 is supplied to the lower layer (low temperature layer) Wc of the hot water tank 2. Water having the same temperature Tc (for example, 15 ° C.) as the temperature is stored, and there is a layer (temperature intermediate layer) Wb having a steep temperature gradient from the temperature Ta to the temperature Tc. The broken line B in FIG. 6 indicates the boundary between the high temperature layer and the temperature intermediate layer Wb.

JP 2012-209173 A

  By the way, even when a situation in which electricity and water from a commercial power source cannot be used due to a disaster or the like, in a situation where, for example, city gas is supplied normally, the heat source device as shown in FIG. , Power can be generated by supplying water from the hot water tank 2 to the power generator 1 and operating the power generator 1, and the power can be used.

  However, the boundary line B in FIG. 6 moves far below the position shown in the figure so that most of the hot water tank 2 is filled with a high temperature layer as shown by Wa in FIG. When the temperature reaches the lower side of the hot water tank 2, the temperature of the water supplied to the power generation device 1 through the water supply passage 21 becomes high, and the power generation device 1 cannot be operated. If it does so, the electric power utilization by operation | movement of the electric power generating apparatus 1 will become impossible.

  Therefore, a configuration in which a radiator is provided in the water supply passage 21 has been proposed. In order to operate this radiator, the power obtained by the operation of the power generator 1 is used. However, there is a problem in that the amount of power used for the operation of the power load device of a user for home use or the like is reduced, and the power use efficiency is deteriorated. Moreover, when most of the hot water tank 2 is filled with the high temperature layer, a proposal has been made to discard the hot water in the hot water tank 2 and supply water from the water supply source to the power generator 1. As described above, the water from the water supply source cannot be supplied to the power generation apparatus 1 in a situation where water cannot be used.

  The present invention has been made in order to solve the above-described problems. The purpose of the present invention is to operate a gas-based power generation device even when the supply of power and water from a commercial power source is stopped due to, for example, a disaster or the like. An object of the present invention is to provide a heat source device with a power generation function that can use electric power.

  In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the first invention relates to a power generation device, a hot water storage tank, a water supply passage for supplying water to the power generation device from a lower side of the hot water storage tank, and hot water heated by waste heat of the power generation device. A heat recovery passage which is sent to the tank side and introduced into the hot water storage tank from the upper side of the hot water storage tank, and a hot water passage for supplying hot water from the upper side of the hot water storage tank to the hot water supply destination, the water supply The passage is provided with a water cooling device that passes through the water supply passage, and the cooling device has a plurality of plate-shaped heat radiation fins spaced apart from each other in the vertical direction, and the heat radiation fins are arranged in a plurality of stages, The plate surfaces of the plurality of radiating fins are respectively inclined surfaces inclined obliquely from the horizontal direction so that the water supply passages pass through the radiating fins. A water dripping part for dripping water on the slope of the radiation fin is provided, On the lower end side of the inclined surface of the radiating fin, a water receiving portion for receiving water dropped on the inclined surface at the middle portion of the inclined surface is provided, and the water receiving portion is provided with a through-hole so that the upper radiating fin The water received by the water receiving portion is configured to drop through the through-holes onto the slope of the lower radiating fin, and a hydrophilic coating agent is provided on the slope of each radiating fin to Water droplets dripped on the slant surface of the fin spread and vaporize on the slant surface by the hydrophilic coating agent, and have a function of improving the heat radiation efficiency of the heat radiation fins as means for solving the problem. .

  Further, in the second invention, in addition to the configuration of the first invention, the through-hole formed in the water receiving portion of each of the radiation fins in the second and lower stages from the top is the heat radiation of the upper stage. It is characterized in that it is formed by shifting the position so as not to overlap with the through-hole formed in the water receiving portion of the fin in the vertical direction.

  Furthermore, in addition to the structure of the said 1st or 2nd invention, 3rd invention is arranged in the said water dripping part from the plastic bottle for drinks in which the arrangement part of the plastic bottle for drinks is formed in this arrangement | positioning part The water is dripped onto the slope of the uppermost radiating fin.

  Furthermore, the fourth invention is characterized in that, in addition to the configuration of the first, second or third invention, the cooling device is provided with a fan for sending air toward the heat radiation fins of a plurality of stages. And

  Further, the fifth invention is characterized in that, in addition to the configuration of any one of the first to fourth inventions, the power generation device is formed of a fuel cell.

  According to the present invention, the water supply passage that supplies water to the power generation device from the lower side of the hot water tank is provided with the water cooling device that passes through the water supply passage. Even when a situation where water and water cannot be used occurs, for example, in a situation where city gas is supplied normally, water is supplied from a hot water tank, and a power generation device formed by, for example, a fuel cell is operated. Since it can generate electric power by making it, it can utilize the electric power.

  In addition, in order to operate the radiator by providing a radiator in the water supply passage, the electric power obtained by the operation of the power generation device is used. Therefore, by using the precious electric power for the operation of the radiator, a user for home use, etc. However, the cooling device provided in the water supply passage in the present invention is cooled by the following configuration. Since the efficiency can be increased, the cooling device can be operated with a small amount of power even if the power of the power generation device is used.

  That is, the cooling device provided in the water supply passage in the present invention has a plurality of plate-shaped heat radiation fins spaced apart from each other in the vertical direction, and the heat radiation fins are arranged in a plurality of stages, The plate surfaces of the radiation fins are inclined surfaces inclined obliquely from the horizontal direction so that the water supply passages penetrate the respective radiation fins, and the water passing through the water supply passages by the radiation fins of each stage. Can be cooled.

  And since the water dripping part for dripping water is provided on the slope of the uppermost heat radiating fin among the plurality of radiating fins, the water dripping part is arranged by placing a plastic bottle for example in this water dripping part. By dropping water on the slope of the uppermost radiating fin, water can be dropped without using electric power or the like.

  In addition, a water receiving portion is provided at the lower end side of the inclined surface of each radiating fin to receive water dropped on the inclined surface in the middle portion of the inclined surface, and a through hole is provided in the water receiving portion so as to dissipate the upper stage. The water received by the water receiving portion of the fin is configured to drop on the slope of the lower radiating fin through the through hole, so that water is dropped on the slope of the uppermost radiating fin. For example, since the water sequentially falls on the lower radiating fins through the through holes formed in the radiating fins, the water can be naturally dropped on each radiating fin without using electric power.

  And in this invention, a hydrophilic coating agent is provided on the slope of each said radiation fin, and the water droplet dripped on the slope of each radiation fin spreads and vaporizes on the said slope by the said hydrophilic coating agent. Since the function of improving the heat dissipation efficiency of each of the heat dissipating fins is provided, water passing through the water supply passage can be efficiently dissipated by the heat dissipating fins even if the cooling operation is not forcibly performed by a fan or the like. Moreover, if a fan is provided and wind is sent toward the heat radiating fins, the heat radiation efficiency can be further improved, and the electric power used to drive the fan can be reduced.

  Also, the through hole formed in the water receiving portion of each radiating fin on the second tier or lower from the top is overlaid in the vertical direction with the through hole formed in the water receiving portion of the radiating fin one step above. By shifting the position so as not to wrap, the water that has fallen on the slope of the lower radiating fin from the upper radiating fin through the through hole will be removed from the lower radiating fin. Then, the gas flows to the through hole formed in the radiating fin, passes through the through hole, and further falls onto the inclined surface of the lower radiating fin. And since the water which passed on the slope spreads on a slope by the function of a hydrophilic coating agent, heat dissipation efficiency can be improved further.

  Furthermore, by forming the arrangement part of the beverage plastic bottle in the water dropping part and dropping the water from the beverage plastic bottle arranged in the arrangement part onto the slope of the uppermost radiation fin, By placing a beverage PET bottle containing water in the PET bottle placement portion, it is possible to drop water easily and accurately.

  Furthermore, by forming the power generation device with a fuel cell, it is possible to provide a heat source device with a power generation function capable of performing efficient power generation using the fuel cell.

It is typical explanatory drawing (a) which shows the principal part structure of one Example of the heat source apparatus which concerns on this invention, and the schematic diagram (b) of the AA cross section of Fig.1 (a). It is typical explanatory drawing for demonstrating the structure of the radiation fin of the cooling device provided in the heat-source apparatus of an Example, and a mode that water falls. It is typical explanatory drawing for demonstrating the relationship between the water which goes up on the radiation fin of the cooling device provided in the heat-source apparatus of an Example, and the wind from a fan. It is explanatory drawing which shows typically the adapter provided in the other Example of the heat-source apparatus which concerns on this invention, and its effect | action. It is explanatory drawing which shows typically the structure of the radiation fin provided in the further another Example of the heat-source apparatus which concerns on this invention. It is explanatory drawing which shows a part of system configuration | structure of the heat-source apparatus provided with the hot water storage tank and the electric power generating apparatus. It is explanatory drawing which shows typically the example of distribution of the temperature layer in a hot water storage tank.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are given to the same constituent elements as those in the above-described examples, and the duplicate description is omitted or simplified.

  FIG. 1 (a) shows a schematic configuration of a main part of an embodiment of a heat source device with a power generation function according to the present invention in a state where a plastic bottle is arranged in a cooling device applied to the present embodiment. ing. FIG. 1B schematically shows the AA cross section of FIG. 1A with the water supply passage 21 omitted.

  The present embodiment has a system configuration similar to that of the heat source device shown in FIG. 6, the power generation device 1 is formed by a fuel cell, and further, in the water supply passage 21 as shown in FIG. The characteristic cooling device 3 is provided. Also in the present embodiment, the configuration of the system connected to the passage 30 shown in FIG. 6 is not particularly limited, and an appropriate configuration such as a configuration proposed so far, a configuration proposed from now on, or the like can be used. Configuration is applied.

  In this embodiment, the cooling device 3 has a plurality of plate-like heat radiation fins 4 spaced apart from each other in the vertical direction, and the heat radiation fins 4 are formed of, for example, aluminum and arranged in a plurality of stages. The plate surfaces of the plurality of radiating fins 4 are inclined surfaces inclined obliquely from the horizontal direction, and the water supply passages 21 pass through the radiating fins 4.

  A water dripping part 5 for dripping water is provided on the slope of the uppermost radiating fin 4 (4a) among the plurality of radiating fins 4. In this embodiment, the water dripping part 5 has a beverage PET bottle. Six arrangement portions 7 are formed. And the water from the plastic bottle 6 for drink arrange | positioned at this arrangement | positioning part 7 has comprised the structure dripped on the slope of the radiation fin 4. FIG. In addition, for dripping water from the plastic bottle 6 for beverages, for example, it is preferable to attach a device (for example, a watering device for planting) such that water drops little by little to the mouth of the plastic bottle, for example, 500 ml of water. Is preferably dripped over about 1 hour.

  On the lower end side of the inclined surface of each radiating fin 4, a water receiving portion 8 is formed in front of the convex surface (so that water is received by the convex surface) for receiving water dropped on the inclined surface in the middle of the inclined surface. Is provided. The water receiving portion 8 is provided with a through hole 9, and the water received by the water receiving portion 8 of the upper radiating fin 4 drops through the through hole 9 onto the slope of the lower radiating fin 4. (See FIG. 2).

  Further, in this embodiment, as shown in FIG. 2, the through hole 9 formed in the water receiving portion 8 of each radiating fin 4 in the second and lower tiers from the top is the radiating fin in the upper tier. 4 is formed by shifting the position so as not to overlap with the through hole 9 formed in the water receiving portion 8 in the vertical direction. 2A is an explanatory diagram schematically showing the radiating fins 4 as viewed from above for easy understanding, and FIG. 2B is a schematic diagram illustrating the radiating fins. It is explanatory drawing which shows typically the cross-sectional structure of 4. FIG.

  In the present embodiment, a hydrophilic coating agent is provided on the slope of each radiating fin 4, and water droplets dropped on the slope of each radiating fin 4 spread on the slope by the hydrophilic coating agent (that is, the second step). The water that has fallen on the following radiating fins 4 has a function of improving the radiating efficiency of each radiating fin 4 by evaporating (spreading from the lower stage side of the slope toward the upper end side of the slope). . Although the hydrophilic coating agent is not particularly limited, it can be formed by an industrial antifouling coating agent such as a glass coating agent that coats a windshield of a car (for example, Hydrotect etc.) Is a registered trademark), and has a function of spreading water droplets falling on the lower end side of the slope to the upper side of the slope.

  Further, as shown in FIG. 1A, the cooling device 3 is provided with a fan 10 for sending air toward the heat radiation fins 4 in a plurality of stages, and the fan is controlled by fan driving means (not shown). 10 is driven. Note that the fan 10 and the fan driving means are driven by electric power generated by the power generation device 1. Further, the position of the fan 10 is not particularly limited and may be set as appropriate. In this embodiment, the upper end of the inclined surface of the radiating fin 4 provided obliquely (FIG. 1A). The right side of the radiating fin 4 is provided with a space therebetween.

  The present embodiment is configured as described above, and the cooling device 3 provided in the water supply passage 21 in the heat source device of the present embodiment includes a plurality of plate-like heat radiation fins 4 spaced apart from each other in the vertical direction. Are arranged in a plurality of stages, and the plate surfaces of the plurality of radiating fins 4 are slanted obliquely from the horizontal direction, and each radiating fin 4 has a mode in which the water supply passage 21 penetrates, Even if water is not used, only water is dripped onto the slope of the uppermost radiation fin 4 from a beverage plastic bottle or the like, and the lower heat radiation from the through hole 9 while receiving the water at the water receiving portion 8 of each radiation fin 4. It can be dropped on the fins 4 and spread on the slopes of the radiating fins 4 with a hydrophilic coating agent.

  Further, according to this embodiment, the through hole 9 formed in the water receiving portion 8 of each radiating fin 4 below the second tier from the top is replaced with the water receiving portion 8 of the radiating fin 3 on the upper tier. As shown in FIGS. 2 (a) and 2 (b), as shown in FIGS. 2 (a) and 2 (b), the heat dissipating fin in the upper stage is formed. Through the through hole 9, the water that has fallen on the slope of the lower radiating fin 4 passes through the slope of the lower radiating fin 4 and is formed in the radiating fin 4. 9, flows through the through hole 9, and further falls onto the slope of the lower radiating fin 4.

  Furthermore, in this embodiment, water that has fallen to the lower end side of the inclined surface of the radiating fin 4 is caused by the effect of the hydrophilic coating agent provided on the radiating fin 4 as shown by the solid arrow in FIG. (Surface surface side) spreads toward the slope upper end side, while the fan 10 is provided on the slope upper end side of the radiating fin 4, so that as shown by the broken arrow in FIG. The wind flows from the slope upper end side to the slope lower end side on the back side of the slope of the radiating fin 4. Accordingly, the action of the water falling on the lower end side of the slope of the radiating fin 4 spreading the surface side of the slope toward the upper end side of the slope is not hindered by the wind from the fan 10, and the water does not enter the surface side of the radiating fin 4. It can be made to spread efficiently.

  And the heat dissipation efficiency of each radiation fin 4 can be improved by vaporizing the water which passed on the slope (surface side) and spread on the slope by the function of the hydrophilic coating agent as described above. Therefore, even if the electric power used for driving the fan 10 is small, heat can be radiated efficiently, and the water supply passage 21 can be efficiently cooled.

  That is, according to the present embodiment, even when a situation where electricity and water from a commercial power source cannot be used due to a disaster or the like occurs, for example, in a situation where city gas is supplied normally, a power generator The water cooled by the cooling device 3 can be supplied from the hot water storage tank 2 to operate the power generation device 1, thereby generating electric power, and the use of the power by the cooling device 3 is very small. Can be sufficiently used for driving home appliances.

  In addition, this invention is not limited to the said Example, It sets suitably. For example, in the said Example, the water dripping part 5 for dripping water on the slope of the uppermost radiation fin 4 (4a) of the multistage radiation fins 4 is formed by the arrangement part 7 of the beverage plastic bottle 6. However, the aspect of the water dripping part 5 is not necessarily the arrangement part 7 of the beverage plastic bottle 6, and it is sufficient that water can be dripped onto the slope of the uppermost radiation fin 4 a.

  Also, when the water dripping part 5 is formed by the arrangement part 7 of the beverage plastic bottle 6, for example, as shown in FIG. 4, an adapter 31 is provided at the mouth portion of the beverage plastic bottle 6 to radiate heat. Water may be dripped at a plurality of locations of the fin 4, or a container having a configuration that allows water to be dripped at a plurality of locations of the radiating fin 4, such as the adapter 31 (for example, the upper side of the container is the opening and the bottom side) May be provided in the water dropping part 5 and water may be dropped into the container.

  Further, the number and shape of the radiating fins 4 are not particularly limited, and may be set as appropriate. For example, as shown in FIG. 5, the water receiving portions 8 formed on the radiating fins 4 are concave. You may form in. Even in this case, by forming the through-hole 9 in the water receiving portion 8 as in the above embodiment, it is possible to achieve the same effect as in the above embodiment, but the effect of spreading water over the entire slope by the hydrophilic coating agent. In view of the above, the embodiment as in the above embodiment is more preferable.

  Furthermore, the fan 10 provided in the cooling device 3 in the above embodiment can be omitted.

  Furthermore, the power generator 1 can also be formed by a gas engine.

  The heat source device of the present invention has good usability because, even when the supply of power and water from a commercial power source is stopped due to a disaster or the like, the gas-based power generation device can be operated to efficiently use the power, for example, It can be used as a home heat source device.

DESCRIPTION OF SYMBOLS 1 Power generator 2 Hot water storage tank 3 Cooling device 4 Radiation fin 5 Water dripping part 6 Beverage plastic bottle 7 Arrangement part 8 Water receiving part 9 Through hole 10 Fan 21 Water supply passage 23 Waste heat recovery passage 25 Hot water passage 30 Hot water passage 30

Claims (5)

  A power generation device, a hot water storage tank, a water supply passage for supplying water to the power generation device from the lower side of the hot water storage tank, and hot water heated by waste heat of the power generation device is sent to the hot water storage tank side to the hot water storage tank A heat recovery passage that is introduced into the hot water storage tank from the upper side of the hot water tank, and a hot water passage for supplying hot water to the hot water supply destination from the upper side of the hot water storage tank, and the water supply passage is provided with the water supply passage. A cooling device for passing water is provided, and the cooling device has a plurality of plate-shaped heat radiation fins spaced apart from each other in the vertical direction, and the heat radiation fins are arranged in a plurality of stages, Each of the surfaces is an inclined surface inclined obliquely from the horizontal direction, and the water supply passage passes through each radiating fin, and water is placed on the inclined surface of the uppermost radiating fin among the plurality of radiating fins. A water dripping part for dripping is provided, and the slope of each of the radiating fins is provided. On the end side, there is provided a water receiving part for receiving the water dropped on the slope at the middle part of the slope, and the water receiving part is provided with a through hole to be received by the water receiving part of the upper radiating fin. Water is dropped on the slope of the lower radiating fin through the through-hole, and a hydrophilic coating agent is provided on the slope of each radiating fin, and drops on the slope of each radiating fin. A heat source device with a power generation function is provided, which has a function of improving the heat radiation efficiency of each of the heat radiation fins by spreading the water droplets on the slope by the hydrophilic coating agent and vaporizing the water droplets.   The through-hole formed in the water receiving portion of each radiating fin below the second tier from the top does not overlap in the vertical direction with the through-hole formed in the water receiving portion of the radiating fin one step above. The heat source device with a power generation function according to claim 1, wherein the heat source device is formed by shifting the position as described above.   The water dripping part has a configuration in which an arrangement part of a beverage PET bottle is formed, and water from the beverage PET bottle arranged in the arrangement part is dripped onto the slope of the uppermost radiation fin. The heat source device with a power generation function according to claim 1 or 2.   The heat source device with a power generation function according to claim 1, wherein the cooling device is provided with a fan that sends air toward the heat radiation fins in a plurality of stages.   5. The heat source device with a power generation function according to claim 1, wherein the power generation device is formed of a fuel cell.

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