US20050139692A1 - Heat recovery unit and heat recovery system of building utilizing it - Google Patents
Heat recovery unit and heat recovery system of building utilizing it Download PDFInfo
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- US20050139692A1 US20050139692A1 US10/505,432 US50543204A US2005139692A1 US 20050139692 A1 US20050139692 A1 US 20050139692A1 US 50543204 A US50543204 A US 50543204A US 2005139692 A1 US2005139692 A1 US 2005139692A1
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- Prior art keywords
- heat
- heat exchanger
- water
- heat recovery
- exhaust air
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0042—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater characterised by the application of thermo-electric units or the Peltier effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0089—Systems using radiation from walls or panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
- F25B2321/0252—Removal of heat by liquids or two-phase fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Definitions
- the present invention relates to a heat recovery device and a building heat recovery system using the same to efficiently recover air conditioning heat during ventilation of buildings.
- Urgent solutions for environmental issues have been desired.
- a problem of reduction in CO 2 emission has come under close scrutiny after ratification of the Kyoto Protocol.
- Energy saving must be promoted in every field throughout the nation in order to reduce CO 2 emission. Therefore, energy saving is required even for heating and cooling in small buildings, more specifically, in ordinary housing.
- the objective of the present invention is to provide a system which allows efficient air-conditioning heat recovery during ventilation and is applicable to ordinary housing.
- a ventilation heat recovery device of the present invention includes a heat sink; a Peltier device connected to the heat sink; a medium connected to the Peltier device; and a power supply for the Peltier device, wherein heat including cold heat is transferred from ventilation to a medium via the Peltier device.
- a building heat recovery system of the present invention includes a central ventilation fan for collecting exhaust air from each room in the building for ventilation; a ventilation heat recovery device, which conducts exhaust air heat from the central ventilation fan to a medium; and a highly efficient thermal conduction sheet for radiating heat conducted via the medium to each room.
- a highly efficient thermal conduction material is used as the medium, and heat is conducted without transferring via the medium.
- Such configuration allows reduction in difference in temperature between the top and the bottom of a room or between rooms.
- FIG. 1 shows a configuration of a heat recovery device of an embodiment
- FIG. 2 shows a detailed configuration of a heat exchanger used in the heat recovery device
- FIG. 3 is a diagram describing a Peltier device used in the heat exchanger
- FIG. 4 shows an example of applying a heat recovery device to ordinary housing
- FIG. 5 shows a configuration of housing in which a building heat recovery system of the embodiment is provided
- FIG. 6 shows a configuration of a radiator panel used in the building heat recovery system of the embodiment
- FIG. 7 shows a configuration of a heat recovery system of another embodiment
- FIG. 8 is a diagram describing connection between the radiator panel and a highly efficient thermal conduction material.
- FIG. 1 shows an entire configuration of a heat recovery device which conducts ventilation heat to a medium.
- the heat recovery device of the embodiment uses water as a heat medium.
- the heat medium for the heat recovery device may be any fluid: liquid such as oil, gas such as air, solid, or a mixture thereof.
- fluid is not used as a heat medium.
- FIG. 1 air emitted from each room for ventilation is collected through a central ventilation fan 110 .
- the central ventilation fan 110 is connected to a heat exchanger 120 via a ventilation pipe. Air collected in the central ventilation fan 110 is emitted from the heat recovery device after recovering heat from heated exhaust air by the heat exchanger 120 .
- the heat exchanger 120 is connected to a tank 130 via a water suction/drainage pipe. Water drawn up from the tank 130 by a pump 140 is heated by the heat exchanger 120 and then returned to the tank 130 again.
- the heat exchanger 120 uses the Peltier device to cool the exhaust air from the central ventilation fan 110 , and heat water in the tank 130 at the same time, thereby efficiently transferring air heat from each room to water. Efficient transfer of heat using the Peltier device allows a higher temperature of the water from the heat exchanger than the exhaust air temperature.
- thermometer 154 measures water temperature flowing into the heat exchanger 120 ; a thermometer 152 measures water temperature flowing out from the heat exchanger 120 ; and a thermometer 156 measures water temperature in the tank 130 .
- a power supply 160 supplies power, which is then measured by a wattmeter 162 , to the Peltier device in the heat exchanger 120 and a pump.
- FIG. 2 shows a detailed configuration of the heat exchanger 120 in FIG. 1 .
- FIG. 2 ( a ) is a front view of the heat exchanger 120
- FIG. 2 ( b ) is a planar view thereof
- FIG. 2C is a lateral view thereof.
- the heat exchanger 120 is made up of heat sinks 210 , Peltier devices 220 , water suction/drainage pipes 250 , and a container 230 . Exhaust air from the central ventilation fan 110 is emitted from the heat exchanger via the heat sinks 210 , while conducting exhaust air heat to the heat sinks 210 . Water flowing through the heat exchanger 120 from the tank 130 enters the container 230 via one of the water suction/drainage pipes 250 , flows out from the other water suction/drainage pipe 250 , and returns to the tank 130 .
- each Peltier device 220 is bonded to a flat surface of corresponding heat sink 210 , and the other is bonded to one surface of the container 230 .
- one surface thereof becomes a cooled surface, and the other becomes a heated surface.
- the cooled surface and the heated surface are reversed.
- FIG. 3 is a diagram describing an example of a configuration of the Peltier device 220 used in the above-described heat exchanger.
- FIG. 3 ( a ) is the exterior of the Peltier device 220 used in the heat exchanger.
- FIG. 3 ( b ) shows an example of an internal configuration of the Peltier device.
- FIG. 3 ( c ) shows an operation of each Peltier device shown in FIG. 3 ( b ).
- FIG. 3 ( b ) the large-size Peltier device shown in FIG. 3 ( a ) has a configuration where multiple small Peltier devices are electrically connected in series, and thermally connected in parallel.
- FIG. 3 ( c ) is a diagram of a simple Peltier device describing the operation of the Peltier device.
- a direct-current power supply 320 is connected to the Peltier device, current flows from the underside of an N-type semiconductor 314 to the underside of a P-type semiconductor 312 via an electrode 316 thereabove. Energy and electrons transfer in a direction opposite to that of the current.
- the N-type semiconductor 314 receives from the electrode 316 energy for transferring electrons from the electrode 316 thereabove to the N-type semiconductor and energy for transferring in the N-type semiconductor 314 to an electrode 315 thereunder, energy on the electrode 316 thereabove becomes insufficient, resulting in decrease in temperature.
- energy that electrons have taken is released, resulting in increase in temperature.
- electron holes, which operate as electrons transfer energy.
- This heating (cooling) effect is in proportion to the magnitude of the current and the number of semiconductors.
- usage of a solar battery as the power supply used in the Peltier device allows implementation of a further environmentally favorable system.
- FIG. 4 shows an example of applying the heat recovery device in FIG. 1 to an ordinary housing.
- a central ventilation fan 420 and a heat exchanger 430 are connected to each other by a pipe, and provided in a ceiling, for example. Ventilation air from each room is sent to the central ventilation fan 420 via a ventilation pipe 410 and emitted from an exhaust air pipe 460 via the heat exchanger 430 .
- a pump/spare tank 450 is provided outdoors.
- a water suction/drainage pipe 440 is deployed on, for example, the foundation of a house (under floor blinding concrete) 470 via the heat exchanger 430 , and connected to the pump/spare tank 450 again. Usage of the foundation 470 allows increase in heat capacity, and increase in heat storage capacity.
- the heat exchanger 430 a certain amount of current flows through the Peltier devices so that water can be heated for warming, or that water can be cooled for cooling. Heated or cooled water circulates along the water suction/drainage pipe 440 , and returns to the pump/spare tank 450 .
- This heat recovery device allows heating (cooling) of each room using heat (cold heat) stored in water.
- heated water may be sent to each room via pipes 482 and 484 so that the heat exchanger can assist cooling and heating each room.
- Usage of the Peltier devices in the heat exchanger as with the case in FIG. 2 improves efficiency.
- the Peltier devices may be used for floor heating (floor cooling).
- the Peltier devices when collectively taking air in from the outside for ventilation of a building, the Peltier devices may be used for heating (cooling) the air intake. In this case, usage of the heat exchanger with the Peltier devices as shown in FIG. 2 improves the heat efficiency.
- each device is not limited to the above, and, for example, the heat exchanger 430 may be provided outdoors.
- the location of the water suction/drainage pipe 440 is not limited to the above, and, it may be deployed, for example, under a floor, in walls, or in a ceiling of each room.
- FIG. 5 shows a configuration of a well insulated and air-tight panel housing in which the building heat recovery system of the embodiment is provided.
- this housing is well insulated using a heat insulating material so as to prevent heat within the housing from escaping.
- This housing is well insulated by deploying an external heat insulation material even under floor.
- Exhaust air from each room in the housing is collected by a central exhaust air/heat recovery device via ventilation pipes 512 provided in each room.
- the central exhaust air/heat recovery device made up of a central ventilation fan 510 , which collects exhaust air from the ventilation pipes 512 , and a heat exchanger 530 , which recovers and stores exhaust air heat in a medium, recovers and stores exhaust air heat in a medium, and then emits the exhaust air from a pipe 514 to the outside of the housing.
- the central exhaust air/heat recovery device recovers not only heat during heating but also cold heat for cooling.
- the heat exchanger 530 is controlled by a control unit 540 , which is operated using an operation panel.
- the control unit 540 also monitors temperatures using an intake air temperature sensor 543 , an exhaust air temperature sensor 545 , an inlet water temperature sensor 544 , and an outlet water temperature sensor 547 .
- the heat exchanger 530 will be described below in detail.
- Heat (including cold heat) recovered by the central exhaust air/heat recovery device is sent back to the housing again from a radiator panel (highly efficient thermal conduction sheet bonded board) 560 provided in each room via a medium such as water and the heat exchanger 530 .
- this radiator panel 560 may be provided on inner walls, in a roof, or under floors.
- the radiator panel and an inner wall may be unified and structured as a single body.
- a configuration of the radiator panel (highly efficient thermal conduction sheet bonded board) 560 is described below.
- the heat exchanger 530 used in the central exhaust air/heat recovery device is the above-described heat exchanger 530 with the Peltier devices.
- heat sinks provided in exhaust air are connected to the Peltier devices, thereby transferring heat (cold heat) from those Peltier devices to a medium.
- FIG. 6 shows a configuration of the radiator panel 560 used in the heat recovery system of the embodiment.
- the radiator panel (highly efficient thermal conduction sheet bonded board) 560 has a configuration where a highly efficient thermal conduction sheet (e.g., a graphite sheet) 566 is bonded to a board 562 .
- a highly efficient thermal conduction sheet e.g., a graphite sheet
- Thermal conduction between the highly efficient thermal conduction sheet 566 and a heat exchanger 556 including a medium such as water is provided by a similar highly efficient thermal conduction sheet 564 . Since a medium within the heat exchanger 556 moves slowly, sufficient thermal conduction to the highly efficient thermal conduction sheet 564 can be provided.
- Configuration of the radiator panel with a highly efficient thermal conduction sheet allows generation of a lightweight and highly efficient radiator panel.
- radiator panel 560 since a highly efficient thermal conduction sheet deployed on part of a surface of that radiator panel 560 provides thermal conduction, this panel can be deployed anywhere by nailing, for example.
- FIG. 7 shows a configuration of a building heat recovery system according to another embodiment of the present invention.
- FIG. 8 is a diagram describing connection among the heat recovery system in FIG. 4 , the radiator panel (highly efficient thermal conduction sheet bonded board) 560 , and a medium.
- heat from each room is conducted to a highly efficient thermal conduction material by the heat exchanger 530 for ventilation.
- the highly efficient thermal conduction material makes direct contact with the Peltier devices in the heat exchanger, to conduct heat for ventilation.
- This highly efficient thermal conduction material e.g., graphite
- a material for conducting heat from the highly efficient thermal conduction material to that pipe or preventing heat dissipation is selected according to location. In each room, as shown in FIG.
- the highly efficient thermal conduction material sheet 564 conducts heat to the highly efficient thermal conduction material sheet 566 on the radiator panel 560 from the highly efficient thermal conduction material included pipe 574 , and the radiator panel 560 radiates heat.
- a highly thermal conductivity material e.g., Copper
- this heat recovery system provides thermal conduction using a highly efficient thermal conduction material, there is no need for motive energy for transferring a medium.
- the heat recovery device allows efficient operation at low costs and facilitates maintenance. In addition, less power consumption leads to energy saving. Furthermore, noise can be suppressed.
Abstract
Description
- The present invention relates to a heat recovery device and a building heat recovery system using the same to efficiently recover air conditioning heat during ventilation of buildings.
- Urgent solutions for environmental issues have been desired. In particular, a problem of reduction in CO2 emission has come under close scrutiny after ratification of the Kyoto Protocol. Energy saving must be promoted in every field throughout the nation in order to reduce CO2 emission. Therefore, energy saving is required even for heating and cooling in small buildings, more specifically, in ordinary housing.
- On the other hand, with ordinary housing, a concern for ventilation in housing has grown due to health problems. However, good ventilation leads to inefficient thermal energy emission during ventilation of air-conditioned housing.
- Consequently, a system which allows efficient air-conditioning heat recovery during ventilation is currently required.
- The objective of the present invention is to provide a system which allows efficient air-conditioning heat recovery during ventilation and is applicable to ordinary housing.
- In order to achieve the above-described objective, a ventilation heat recovery device of the present invention includes a heat sink; a Peltier device connected to the heat sink; a medium connected to the Peltier device; and a power supply for the Peltier device, wherein heat including cold heat is transferred from ventilation to a medium via the Peltier device.
- In addition, a building heat recovery system of the present invention includes a central ventilation fan for collecting exhaust air from each room in the building for ventilation; a ventilation heat recovery device, which conducts exhaust air heat from the central ventilation fan to a medium; and a highly efficient thermal conduction sheet for radiating heat conducted via the medium to each room.
- A highly efficient thermal conduction material is used as the medium, and heat is conducted without transferring via the medium. Such configuration allows reduction in difference in temperature between the top and the bottom of a room or between rooms.
-
FIG. 1 shows a configuration of a heat recovery device of an embodiment; -
FIG. 2 shows a detailed configuration of a heat exchanger used in the heat recovery device; -
FIG. 3 is a diagram describing a Peltier device used in the heat exchanger; -
FIG. 4 shows an example of applying a heat recovery device to ordinary housing; -
FIG. 5 shows a configuration of housing in which a building heat recovery system of the embodiment is provided; -
FIG. 6 shows a configuration of a radiator panel used in the building heat recovery system of the embodiment; -
FIG. 7 shows a configuration of a heat recovery system of another embodiment; and -
FIG. 8 is a diagram describing connection between the radiator panel and a highly efficient thermal conduction material. - An embodiment of the present invention is described while referencing the drawings.
-
FIG. 1 shows an entire configuration of a heat recovery device which conducts ventilation heat to a medium. A case of heating each room in a building using the device shown inFIG. 1 is described. The heat recovery device of the embodiment uses water as a heat medium. The heat medium for the heat recovery device may be any fluid: liquid such as oil, gas such as air, solid, or a mixture thereof. On the other hand, to be described later, there is a case where fluid is not used as a heat medium. - In
FIG. 1 , air emitted from each room for ventilation is collected through acentral ventilation fan 110. Thecentral ventilation fan 110 is connected to aheat exchanger 120 via a ventilation pipe. Air collected in thecentral ventilation fan 110 is emitted from the heat recovery device after recovering heat from heated exhaust air by theheat exchanger 120. On the other hand, theheat exchanger 120 is connected to atank 130 via a water suction/drainage pipe. Water drawn up from thetank 130 by apump 140 is heated by theheat exchanger 120 and then returned to thetank 130 again. - The
heat exchanger 120 uses the Peltier device to cool the exhaust air from thecentral ventilation fan 110, and heat water in thetank 130 at the same time, thereby efficiently transferring air heat from each room to water. Efficient transfer of heat using the Peltier device allows a higher temperature of the water from the heat exchanger than the exhaust air temperature. - By reversing the direction of current flowing into the Peltier device for cooling, exhaust air from the
central ventilation fan 110 is heated and water is cooled by theheat exchanger 120, resulting in generation of cold water. In this case, usage of the Peltier device allows decrease in this cold water temperature to be lower than an exhaust air temperature from a room. - Note that a
thermometer 154 measures water temperature flowing into theheat exchanger 120; athermometer 152 measures water temperature flowing out from theheat exchanger 120; and athermometer 156 measures water temperature in thetank 130. Apower supply 160 supplies power, which is then measured by awattmeter 162, to the Peltier device in theheat exchanger 120 and a pump. -
FIG. 2 shows a detailed configuration of theheat exchanger 120 inFIG. 1 .FIG. 2 (a) is a front view of theheat exchanger 120,FIG. 2 (b) is a planar view thereof, andFIG. 2C is a lateral view thereof. - The
heat exchanger 120 is made up ofheat sinks 210,Peltier devices 220, water suction/drainage pipes 250, and acontainer 230. Exhaust air from thecentral ventilation fan 110 is emitted from the heat exchanger via theheat sinks 210, while conducting exhaust air heat to theheat sinks 210. Water flowing through theheat exchanger 120 from thetank 130 enters thecontainer 230 via one of the water suction/drainage pipes 250, flows out from the other water suction/drainage pipe 250, and returns to thetank 130. - One surface each Peltier
device 220 is bonded to a flat surface ofcorresponding heat sink 210, and the other is bonded to one surface of thecontainer 230. When applying a certain amount of current to thePeltier devices 220, one surface thereof becomes a cooled surface, and the other becomes a heated surface. When reversing the direction of the current, the cooled surface and the heated surface are reversed. - Consequently, in the case of recovering air-conditioning heat using the heat exchanger and then heating water in the
container 230, a certain amount of current should be applied so that thePeltier device 220 sides bonded to theheat sink 210 become cooled surfaces and the other sides surfaces bonded to thecontainer 230 become heated surfaces This makes thePeltier device 220 sides bonded to the heat sink 210 cool exhaust air, and thePeltier devices 220 sides bonded to thecontainer 230 heat water. On the other hand, when cooling water by recovering air-conditioning cold air, a certain amount of current is applied to thePeltier devices 220 in a direction opposite to the case of heating. This makes thePeltier devices 220 bonded to theheat sink 210 heat exhaust air, and thePeltier devices 220 sides bonded to thecontainer 230 cool water. -
FIG. 3 is a diagram describing an example of a configuration of thePeltier device 220 used in the above-described heat exchanger. -
FIG. 3 (a) is the exterior of thePeltier device 220 used in the heat exchanger.FIG. 3 (b) shows an example of an internal configuration of the Peltier device.FIG. 3 (c) shows an operation of each Peltier device shown inFIG. 3 (b). - As shown in
FIG. 3 (b), the large-size Peltier device shown inFIG. 3 (a) has a configuration where multiple small Peltier devices are electrically connected in series, and thermally connected in parallel.FIG. 3 (c) is a diagram of a simple Peltier device describing the operation of the Peltier device. When a direct-current power supply 320 is connected to the Peltier device, current flows from the underside of an N-type semiconductor 314 to the underside of a P-type semiconductor 312 via anelectrode 316 thereabove. Energy and electrons transfer in a direction opposite to that of the current. Since the N-type semiconductor 314 receives from theelectrode 316 energy for transferring electrons from theelectrode 316 thereabove to the N-type semiconductor and energy for transferring in the N-type semiconductor 314 to anelectrode 315 thereunder, energy on theelectrode 316 thereabove becomes insufficient, resulting in decrease in temperature. On the other hand, from theelectrode 315 thereunder, energy that electrons have taken is released, resulting in increase in temperature. In the P-type semiconductor 312, electron holes, which operate as electrons, transfer energy. As a result, the total heat quantity absorbed by aheat absorption surface 318 and the heat quantity corresponding to the total supplied power are added together, and emitted to aradiator surface 319. This heating (cooling) effect is in proportion to the magnitude of the current and the number of semiconductors. At this time, usage of a solar battery as the power supply used in the Peltier device allows implementation of a further environmentally favorable system. -
FIG. 4 shows an example of applying the heat recovery device inFIG. 1 to an ordinary housing. - In
FIG. 4 , a central ventilation fan 420 and aheat exchanger 430 are connected to each other by a pipe, and provided in a ceiling, for example. Ventilation air from each room is sent to the central ventilation fan 420 via aventilation pipe 410 and emitted from anexhaust air pipe 460 via theheat exchanger 430. On the other hand, a pump/spare tank 450 is provided outdoors. A water suction/drainage pipe 440 is deployed on, for example, the foundation of a house (under floor blinding concrete) 470 via theheat exchanger 430, and connected to the pump/spare tank 450 again. Usage of thefoundation 470 allows increase in heat capacity, and increase in heat storage capacity. - In the
heat exchanger 430, a certain amount of current flows through the Peltier devices so that water can be heated for warming, or that water can be cooled for cooling. Heated or cooled water circulates along the water suction/drainage pipe 440, and returns to the pump/spare tank 450. - This heat recovery device allows heating (cooling) of each room using heat (cold heat) stored in water. In this case, as shown in
FIG. 4 , heated water may be sent to each room viapipes FIG. 2 improves efficiency. In addition, the Peltier devices may be used for floor heating (floor cooling). - On the other hand, when collectively taking air in from the outside for ventilation of a building, the Peltier devices may be used for heating (cooling) the air intake. In this case, usage of the heat exchanger with the Peltier devices as shown in
FIG. 2 improves the heat efficiency. - In this system, the location of each device is not limited to the above, and, for example, the
heat exchanger 430 may be provided outdoors. In addition, the location of the water suction/drainage pipe 440 is not limited to the above, and, it may be deployed, for example, under a floor, in walls, or in a ceiling of each room. -
FIG. 5 shows a configuration of a well insulated and air-tight panel housing in which the building heat recovery system of the embodiment is provided. InFIG. 5 , this housing is well insulated using a heat insulating material so as to prevent heat within the housing from escaping. This housing is well insulated by deploying an external heat insulation material even under floor. - Exhaust air from each room in the housing is collected by a central exhaust air/heat recovery device via
ventilation pipes 512 provided in each room. The central exhaust air/heat recovery device made up of acentral ventilation fan 510, which collects exhaust air from theventilation pipes 512, and aheat exchanger 530, which recovers and stores exhaust air heat in a medium, recovers and stores exhaust air heat in a medium, and then emits the exhaust air from apipe 514 to the outside of the housing. The central exhaust air/heat recovery device recovers not only heat during heating but also cold heat for cooling. Theheat exchanger 530 is controlled by acontrol unit 540, which is operated using an operation panel. Thecontrol unit 540 also monitors temperatures using an intakeair temperature sensor 543, an exhaustair temperature sensor 545, an inletwater temperature sensor 544, and an outletwater temperature sensor 547. Theheat exchanger 530 will be described below in detail. - Heat (including cold heat) recovered by the central exhaust air/heat recovery device is sent back to the housing again from a radiator panel (highly efficient thermal conduction sheet bonded board) 560 provided in each room via a medium such as water and the
heat exchanger 530. As shown inFIG. 5 , thisradiator panel 560 may be provided on inner walls, in a roof, or under floors. The radiator panel and an inner wall may be unified and structured as a single body. A configuration of the radiator panel (highly efficient thermal conduction sheet bonded board) 560 is described below. - The
heat exchanger 530 used in the central exhaust air/heat recovery device is the above-describedheat exchanger 530 with the Peltier devices. In theheat exchanger 530, heat sinks provided in exhaust air are connected to the Peltier devices, thereby transferring heat (cold heat) from those Peltier devices to a medium. -
FIG. 6 shows a configuration of theradiator panel 560 used in the heat recovery system of the embodiment. - The radiator panel (highly efficient thermal conduction sheet bonded board) 560 has a configuration where a highly efficient thermal conduction sheet (e.g., a graphite sheet) 566 is bonded to a
board 562. Thermal conduction between the highly efficientthermal conduction sheet 566 and aheat exchanger 556 including a medium such as water is provided by a similar highly efficientthermal conduction sheet 564. Since a medium within theheat exchanger 556 moves slowly, sufficient thermal conduction to the highly efficientthermal conduction sheet 564 can be provided. - Configuration of the radiator panel with a highly efficient thermal conduction sheet allows generation of a lightweight and highly efficient radiator panel.
- In addition, since a highly efficient thermal conduction sheet deployed on part of a surface of that
radiator panel 560 provides thermal conduction, this panel can be deployed anywhere by nailing, for example. -
FIG. 7 shows a configuration of a building heat recovery system according to another embodiment of the present invention.FIG. 8 is a diagram describing connection among the heat recovery system inFIG. 4 , the radiator panel (highly efficient thermal conduction sheet bonded board) 560, and a medium. - According to this system, as shown in
FIG. 7 , heat from each room is conducted to a highly efficient thermal conduction material by theheat exchanger 530 for ventilation. The highly efficient thermal conduction material makes direct contact with the Peltier devices in the heat exchanger, to conduct heat for ventilation. This highly efficient thermal conduction material (e.g., graphite) is stored in a pipe 572 to conduct heat to each room for ventilation. A material for conducting heat from the highly efficient thermal conduction material to that pipe or preventing heat dissipation is selected according to location. In each room, as shown inFIG. 8 , the highly efficient thermalconduction material sheet 564 conducts heat to the highly efficient thermalconduction material sheet 566 on theradiator panel 560 from the highly efficient thermal conduction material includedpipe 574, and theradiator panel 560 radiates heat. In this case, in the place where the highly efficient thermalconduction material sheet 564 makes contact with thepipe 574, a highly thermal conductivity material (e.g., Copper) may be provided. - As described above, since this heat recovery system provides thermal conduction using a highly efficient thermal conduction material, there is no need for motive energy for transferring a medium.
- In addition, in the case where a radiator panel is provided in a ceiling or under a floor in a room, if there is not only heat recovered from exhaust air but also difference in temperature between the top and the bottom of a room or between rooms, the heat for the difference in temperature is absorbed from the highly efficient thermal conduction sheet on the radiator panel, and then conducted via the highly efficient thermal conduction material in the pipe, which allows elimination of difference in temperature within a house. This is effective even when heat from exhaust air is not recovered.
- This is because the highly efficient thermal conduction sheet on the radiator panel or the highly efficient thermal conduction material in the pipe conducts heat bidirectionally, and this allows arbitrary thermal conduction.
- The heat recovery device according to the present invention allows efficient operation at low costs and facilitates maintenance. In addition, less power consumption leads to energy saving. Furthermore, noise can be suppressed.
Claims (3)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-048023 | 2002-02-25 | ||
JP2002048023A JP2003247763A (en) | 2002-02-25 | 2002-02-25 | Heat recovery system during ventilation |
JP2002232084A JP2004069239A (en) | 2002-08-08 | 2002-08-08 | Heat recovery system of building |
JP2002-232084 | 2002-08-08 | ||
PCT/JP2003/001058 WO2003071200A1 (en) | 2002-02-25 | 2003-02-03 | Heat recovery unit and heat recovery system of building utilizing it |
Publications (1)
Publication Number | Publication Date |
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US20050139692A1 true US20050139692A1 (en) | 2005-06-30 |
Family
ID=27759696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/505,432 Abandoned US20050139692A1 (en) | 2002-02-25 | 2003-02-03 | Heat recovery unit and heat recovery system of building utilizing it |
Country Status (7)
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---|---|
US (1) | US20050139692A1 (en) |
EP (1) | EP1486743A4 (en) |
CN (1) | CN1270147C (en) |
AU (1) | AU2003246346A1 (en) |
CA (1) | CA2477332A1 (en) |
HK (1) | HK1080930A1 (en) |
WO (1) | WO2003071200A1 (en) |
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US20080028769A1 (en) * | 2006-08-02 | 2008-02-07 | Lakhi Nandlal Goenka | Heat exchanger tube having integrated thermoelectric devices |
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US20090301103A1 (en) * | 2008-06-03 | 2009-12-10 | Bell Lon E | Thermoelectric heat pump |
US20100031988A1 (en) * | 2001-02-09 | 2010-02-11 | Bell Lon E | High power density thermoelectric systems |
US20100155018A1 (en) * | 2008-12-19 | 2010-06-24 | Lakhi Nandlal Goenka | Hvac system for a hybrid vehicle |
US20100291414A1 (en) * | 2009-05-18 | 2010-11-18 | Bsst Llc | Battery Thermal Management System |
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US7870745B2 (en) | 2006-03-16 | 2011-01-18 | Bsst Llc | Thermoelectric device efficiency enhancement using dynamic feedback |
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Also Published As
Publication number | Publication date |
---|---|
HK1080930A1 (en) | 2006-05-04 |
CN1643312A (en) | 2005-07-20 |
CA2477332A1 (en) | 2003-08-28 |
EP1486743A4 (en) | 2005-07-13 |
CN1270147C (en) | 2006-08-16 |
WO2003071200A1 (en) | 2003-08-28 |
AU2003246346A1 (en) | 2003-09-09 |
EP1486743A1 (en) | 2004-12-15 |
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Owner name: ARUDE ENGINEERING CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAMOTO, HIDEYO;REEL/FRAME:016320/0779 Effective date: 20040823 Owner name: FAMM CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAMOTO, HIDEYO;REEL/FRAME:016320/0779 Effective date: 20040823 |
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