CN105020763A - Passive building environmental protection recycling system - Google Patents

Passive building environmental protection recycling system Download PDF

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Publication number
CN105020763A
CN105020763A CN201510332946.2A CN201510332946A CN105020763A CN 105020763 A CN105020763 A CN 105020763A CN 201510332946 A CN201510332946 A CN 201510332946A CN 105020763 A CN105020763 A CN 105020763A
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China
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water
passive type
type building
insulation layer
heat
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CN201510332946.2A
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Chinese (zh)
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CN105020763B (en
Inventor
徐伟
陈曦
刘志坚
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China Academy of Building Research CABR
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China Academy of Building Research CABR
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/33Wastewater or sewage treatment systems using renewable energies using wind energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Wind Motors (AREA)

Abstract

The invention relates to a passive building environment-friendly recycling system, which comprises solar power generation equipment, geothermal power generation equipment, wind power generation equipment, a storage battery pack, a heat insulation layer, water circulation heat supply equipment, wastewater treatment equipment, a water pump and a water storage device.

Description

A kind of passive type building environment-protective circulating reutilization system
Technical field
The present invention relates to a kind of passive type building environment-protective circulating reutilization system, relate to a kind of environment-friendly type building field of energy utilization, belong to environment protection architecture technical field.
Background technology
Passive type is built, and is the comprehensive expression of person of various technical products, and primary energy heating being consumed by the regenerative resource such as abundant is no more than the house of 15 kilowatt-hours/square meter.So low energy consumption standard is achieved by the strong external wall of high heat-insulating sound-insulating, sealing and regenerative resource." passive type building " is the brand-new energy saving building concept of one abroad advocated, and Ye Shi China promotes important opportunity and the platform of Building Energy-saving Work.At present, passive type building major function is for scientific research office, technology displaying, minimized office meeting etc.But, current passive type architectural development technology is slow, be positioned at the Sino-German Passive low-energy office building of the building technology research and development centre of Hebei province of From Shijiazhuang City of Hebei Province, being Sino-German international technology cooperation project in 2012, is the first public building adopting the design of German passive type building standard in Hebei province and even the whole nation.1 layer, underground, 6 layers on the ground, building area is about 2100m2, overall floorage 14119m2, and underground is about 2100m2, on the ground about 12000m2, and wherein passive type construction area is one to six layer on the ground.But the passive type construction cost of this building is high, utilization of regenerative energy rate can't reach desirable requirement, therefore, can not effectively promote, how to develop a kind of cheap, that utilization of regenerative energy rate is high passive type to build, being people's technical issues that need to address always, is also the key point breaking through passive type architectural development bottleneck.
In order to solve above technical problem, the invention provides a kind of passive type building environment-protective circulating reutilization system, it is by geothermal power generation, solar electrical energy generation, these energy with unlimited Development volue of wind power generation gather, jointly for passive type building interior provides thermal source and energy, simultaneously, water circulation heating equipment is set to H type fractal structure, effectively can improve radiating effect, improve the thermal efficiency of passive type building interior, in addition, by arranging the heat-insulation layer of sandwich construction, even if in the winter of cold, also the energy loss in passive type building can effectively be improved, in addition, be provided with sewage treatment equipment, improve the utilization rate of water resource, environmental protection more.
Summary of the invention
For achieving the above object, the present invention adopts following technical scheme: a kind of passive type building environment-protective circulating reutilization system, it is characterized in that, it comprises solar power plant, geothermal power generating device, wind energy generating plant, batteries, heat-insulation layer, water circulation heating equipment, sewage treatment equipment, water pump and water receiver, wherein, described solar power plant, geothermal power generating device, wind energy generating plant is all connected with described batteries, described heat-insulation layer is arranged on the outside of passive type building, described water circulation heating equipment is arranged on passive type building interior, described sewage treatment equipment is arranged on the underground of passive type building, described water receiver is connected with described water circulation heating equipment, water pump is provided with between described water receiver and described water circulation heat supply are arranged, described solar power plant, geothermal power generating device, wind energy generating plant is also all directly connected with described water circulation heating equipment respectively.
Further, as preferably, described solar power plant comprises solar battery array, DC/DC converter, DC/DC converter switches device, DC/AC inverter, wherein, described solar battery array is connected with described batteries by described DC/DC converter, described DC/DC converter is provided with DC/DC converter switches device, described solar battery array is electrically connected with the heater in described water circulation heating equipment by described DC/AC inverter, and described DC/DC converter switches device adopts switch mosfet device.
Further, as preferably, described geothermal power generating device at least comprises the EGR be made up of preheater, evaporimeter, superheater, reservoir, condenser, cooling tower, steam turbine and inverted well, wherein, preheater is connected with described evaporimeter, is provided with superheater between described evaporimeter and described steam turbine, described steam turbine is connected with described condenser, described condenser is connected with described cooling tower, and described condenser is connected with described reservoir, and described reservoir is connected with described inverted well.
Further, as preferably, heat-insulation layer is three-decker, and from inside to outside the thickness of every layer of heat-insulation layer thickens, it is vacuum layer between every layer of heat-insulation layer, and the thickness of vacuum layer is greater than the half of innermost layer insulation layer thickness, be less than 1.2 times of innermost layer thickness, and every layer of heat-insulation layer all adopts extruded polystyrene board.
Further, as preferably, described water circulation heating equipment comprises heater, room radiator, hot-water line, cold water pipe and mediation valve, and wherein, described mediation valve is arranged on tap, described heater is connected with feed pipe, described heater is connected with the water inlet of described room radiator, and the delivery port of described room radiator is connected with described hot-water line, and described hot-water line is connected to and is in harmonious proportion on valve, described cold water pipe one end is connected on feed pipe, and the other end is also connected on described mediation valve; Described room radiator is H type fractal structure, and radiator inside, described room at least comprises the fractal heat dissipation channel of one-level H type and the fractal heat dissipation channel of secondary H type, the fractal heat dissipation channel of described secondary H type is arranged on the end of the fractal heat dissipation channel of one-level H type, the major trunk roads of the fractal heat dissipation channel of described one-level H type are provided with water inlet, and the end of the fractal heat dissipation channel of described secondary H type is provided with delivery port.
Further, as preferably, described wind energy generating plant comprises multiple blade and generator, and described blade is all arranged on the roof of passive type building.
Further, as preferably, described sewage treatment equipment comprises waste water collector, filter, sludge-tank, heating bath, aeration tank, multistage anaerobic pond, separate tank, clear water reserviors, ultraviolet ray disinfector and recycling precipitate pond, wherein, one end of described waste water collector build with passive type in waste water outflow conduit be connected, the other end of described waste water collector connects filter, described filter connects sludge-tank, described sludge-tank connects aeration tank, described aeration tank connects multistage anaerobic pond, described multistage anaerobic pond is by being connected with described clear water reserviors after described separate tank, described clear water reserviors are provided with described ultraviolet ray disinfector, described sediment is connected with described separate tank.
Beneficial effect of the present invention is:
A kind of passive type building environment-protective circulating reutilization system provided by the invention, it is by geothermal power generation, solar electrical energy generation, these energy with unlimited Development volue of wind power generation gather, jointly for passive type building interior provides thermal source and energy, simultaneously, water circulation heating equipment is set to H type fractal structure, effectively can improve radiating effect, improve the thermal efficiency of passive type building interior, in addition, by arranging the heat-insulation layer of sandwich construction, even if in the winter of cold, also the energy loss in passive type building can effectively be improved, in addition, be provided with sewage treatment equipment, improve the utilization rate of water resource, environmental protection more.
Accompanying drawing explanation
Fig. 1 is the solar power plant syndeton schematic diagram of a kind of passive type building environment-protective circulating reutilization system of the present invention;
Fig. 2 is the geothermal power generating device syndeton schematic diagram of a kind of passive type building environment-protective circulating reutilization system of the present invention;
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description is carried out to the present invention.But should be appreciated that being provided only of accompanying drawing understands the present invention better, they not should be understood to limitation of the present invention.
The invention provides a kind of passive type building environment-protective circulating reutilization system, it comprises solar power plant, geothermal power generating device, wind energy generating plant, batteries, heat-insulation layer, water circulation heating equipment, sewage treatment equipment, water pump and water receiver, wherein, solar power plant, geothermal power generating device, wind energy generating plant is all connected with described batteries, heat-insulation layer is arranged on the outside of passive type building, water circulation heating equipment is arranged on passive type building interior, described sewage treatment equipment is arranged on the underground of passive type building, water receiver is connected with described water circulation heating equipment, water pump is provided with between water receiver and described water circulation heat supply are arranged, solar power plant, geothermal power generating device, wind energy generating plant is also all directly connected with described water circulation heating equipment respectively.
As shown in Figure 1, solar power plant comprises solar battery array, DC/DC converter, DC/DC converter switches device, DC/AC inverter, wherein, described solar battery array is connected with described batteries by described DC/DC converter, described DC/DC converter is provided with DC/DC converter switches device, described solar battery array is electrically connected with the heater in described water circulation heating equipment by described DC/AC inverter, and described DC/DC converter switches device adopts switch mosfet device.
As shown in Figure 2, geothermal power generating device at least comprises the EGR be made up of preheater, evaporimeter, superheater, reservoir, condenser, cooling tower, steam turbine and inverted well, wherein, preheater is connected with described evaporimeter, be provided with superheater between described evaporimeter and described steam turbine, described steam turbine is connected with described condenser, and described condenser is connected with described cooling tower, described condenser is connected with described reservoir, and described reservoir is connected with described inverted well.
In the present embodiment, heat-insulation layer is three-decker, and from inside to outside the thickness of every layer of heat-insulation layer thickens, it is vacuum layer between every layer of heat-insulation layer, and the thickness of vacuum layer is greater than the half of innermost layer insulation layer thickness, be less than 1.2 times of innermost layer thickness, and every layer of heat-insulation layer all adopts extruded polystyrene board.Water circulation heating equipment comprises heater, room radiator, hot-water line, cold water pipe and mediation valve, wherein, described mediation valve is arranged on tap, described heater is connected with feed pipe, described heater is connected with the water inlet of described room radiator, and the delivery port of described room radiator is connected with described hot-water line, and described hot-water line is connected to and is in harmonious proportion on valve, described cold water pipe one end is connected on feed pipe, and the other end is also connected on described mediation valve; Described room radiator is H type fractal structure, and radiator inside, described room at least comprises the fractal heat dissipation channel of one-level H type and the fractal heat dissipation channel of secondary H type, the fractal heat dissipation channel of described secondary H type is arranged on the end of the fractal heat dissipation channel of one-level H type, the major trunk roads of the fractal heat dissipation channel of described one-level H type are provided with water inlet, and the end of the fractal heat dissipation channel of described secondary H type is provided with delivery port.
Wind energy generating plant comprises multiple blade and generator, and described blade is all arranged on the roof of passive type building.Sewage treatment equipment comprises waste water collector, filter, sludge-tank, heating bath, aeration tank, multistage anaerobic pond, separate tank, clear water reserviors, ultraviolet ray disinfector and recycling precipitate pond, wherein, one end of described waste water collector build with passive type in waste water outflow conduit be connected, the other end of described waste water collector connects filter, described filter connects sludge-tank, described sludge-tank connects aeration tank, described aeration tank connects multistage anaerobic pond, described multistage anaerobic pond is by being connected with described clear water reserviors after described separate tank, described clear water reserviors are provided with described ultraviolet ray disinfector, described sediment is connected with described separate tank.
The present invention is by geothermal power generation, solar electrical energy generation, these energy with unlimited Development volue of wind power generation gather, jointly for passive type building interior provides thermal source and energy, simultaneously, water circulation heating equipment is set to H type fractal structure, effectively can improve radiating effect, improve the thermal efficiency of passive type building interior, in addition, by arranging the heat-insulation layer of sandwich construction, even if in the winter of cold, also the energy loss in passive type building can effectively be improved, in addition, be provided with sewage treatment equipment, improve the utilization rate of water resource, environmental protection more.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (7)

1. a passive type building environment-protective circulating reutilization system, it is characterized in that, it comprises solar power plant, geothermal power generating device, wind energy generating plant, batteries, heat-insulation layer, water circulation heating equipment, sewage treatment equipment, water pump and water receiver, wherein, described solar power plant, geothermal power generating device, wind energy generating plant is all connected with described batteries, described heat-insulation layer is arranged on the outside of passive type building, described water circulation heating equipment is arranged on passive type building interior, described sewage treatment equipment is arranged on the underground of passive type building, described water receiver is connected with described water circulation heating equipment, water pump is provided with between described water receiver and described water circulation heat supply are arranged, described solar power plant, geothermal power generating device, wind energy generating plant is also all directly connected with described water circulation heating equipment respectively.
2. a kind of passive type building environment-protective circulating reutilization system according to claim 1, it is characterized in that, described solar power plant comprises solar battery array, DC/DC converter, DC/DC converter switches device, DC/AC inverter, wherein, described solar battery array is connected with described batteries by described DC/DC converter, described DC/DC converter is provided with DC/DC converter switches device, described solar battery array is electrically connected with the heater in described water circulation heating equipment by described DC/AC inverter, described DC/DC converter switches device adopts switch mosfet device.
3. a kind of passive type building environment-protective circulating reutilization system according to claim 1, it is characterized in that, described geothermal power generating device at least comprises by preheater, evaporimeter, superheater, reservoir, condenser, cooling tower, the EGR that steam turbine and inverted well are formed, wherein, preheater is connected with described evaporimeter, superheater is provided with between described evaporimeter and described steam turbine, described steam turbine is connected with described condenser, described condenser is connected with described cooling tower, described condenser is connected with described reservoir, described reservoir is connected with described inverted well.
4. a kind of passive type building environment-protective circulating reutilization system according to claim 1, it is characterized in that, heat-insulation layer is three-decker, and from inside to outside the thickness of every layer of heat-insulation layer thickens, it is vacuum layer between every layer of heat-insulation layer, and the thickness of vacuum layer is greater than the half of innermost layer insulation layer thickness, be less than 1.2 times of innermost layer thickness, and every layer of heat-insulation layer all adopts extruded polystyrene board.
5. a kind of passive type building environment-protective circulating reutilization system according to claim 1, it is characterized in that, described water circulation heating equipment comprises heater, room radiator, hot-water line, cold water pipe and the valve that is in harmonious proportion, wherein, described mediation valve is arranged on tap, described heater is connected with feed pipe, described heater is connected with the water inlet of described room radiator, the delivery port of described room radiator is connected with described hot-water line, described hot-water line is connected to and is in harmonious proportion on valve, described cold water pipe one end is connected on feed pipe, the other end is also connected on described mediation valve, described room radiator is H type fractal structure, and radiator inside, described room at least comprises the fractal heat dissipation channel of one-level H type and the fractal heat dissipation channel of secondary H type, the fractal heat dissipation channel of described secondary H type is arranged on the end of the fractal heat dissipation channel of one-level H type, the major trunk roads of the fractal heat dissipation channel of described one-level H type are provided with water inlet, and the end of the fractal heat dissipation channel of described secondary H type is provided with delivery port.
6. a kind of passive type building environment-protective circulating reutilization system according to claim 1, it is characterized in that, described wind energy generating plant comprises multiple blade and generator, and described blade is all arranged on the roof of passive type building.
7. a kind of passive type building environment-protective circulating reutilization system according to claim 1-6 any one, it is characterized in that, described sewage treatment equipment comprises waste water collector, filter, sludge-tank, heating bath, aeration tank, multistage anaerobic pond, separate tank, clear water reserviors, ultraviolet ray disinfector and recycling precipitate pond, wherein, one end of described waste water collector build with passive type in waste water outflow conduit be connected, the other end of described waste water collector connects filter, described filter connects sludge-tank, described sludge-tank connects aeration tank, described aeration tank connects multistage anaerobic pond, described multistage anaerobic pond is by being connected with described clear water reserviors after described separate tank, described clear water reserviors are provided with described ultraviolet ray disinfector, described sediment is connected with described separate tank.
CN201510332946.2A 2015-06-15 2015-06-15 Passive building environmental protection recycling system Active CN105020763B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101319579A (en) * 2008-06-13 2008-12-10 昆山太得隆机械有限公司 Solar construction integrated energy-saving system
CN101493241A (en) * 2008-01-21 2009-07-29 于�玲 Combined thermal storage controllable multipath cycle solar heating system
CN201594800U (en) * 2009-11-13 2010-09-29 杰俐科技股份有限公司 Multiple generators for buildings
CN202125983U (en) * 2011-05-31 2012-01-25 福州斯狄渢电热水器有限公司 Comprehensive warming and heating system of solar air source heat pump
CN102538053A (en) * 2012-02-22 2012-07-04 西南交通大学 Active solar energy and wind energy combined heating system
CN202361497U (en) * 2011-11-18 2012-08-01 福州斯狄渢电热水器有限公司 Intelligently controlled heating system using photovoltaics and geotherm in complementary manner
DE102012102423A1 (en) * 2012-03-21 2013-09-26 Günter Müller Solar collector for use on roof for heating system for heating single-family house, has shadowing device e.g. roller shutter and electrochromatic glass, where shutter is provided with drive and reflecting surface
US20130263843A1 (en) * 2012-04-09 2013-10-10 David Kreutzman Pv water heating system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101493241A (en) * 2008-01-21 2009-07-29 于�玲 Combined thermal storage controllable multipath cycle solar heating system
CN101319579A (en) * 2008-06-13 2008-12-10 昆山太得隆机械有限公司 Solar construction integrated energy-saving system
CN201594800U (en) * 2009-11-13 2010-09-29 杰俐科技股份有限公司 Multiple generators for buildings
CN202125983U (en) * 2011-05-31 2012-01-25 福州斯狄渢电热水器有限公司 Comprehensive warming and heating system of solar air source heat pump
CN202361497U (en) * 2011-11-18 2012-08-01 福州斯狄渢电热水器有限公司 Intelligently controlled heating system using photovoltaics and geotherm in complementary manner
CN102538053A (en) * 2012-02-22 2012-07-04 西南交通大学 Active solar energy and wind energy combined heating system
DE102012102423A1 (en) * 2012-03-21 2013-09-26 Günter Müller Solar collector for use on roof for heating system for heating single-family house, has shadowing device e.g. roller shutter and electrochromatic glass, where shutter is provided with drive and reflecting surface
US20130263843A1 (en) * 2012-04-09 2013-10-10 David Kreutzman Pv water heating system

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