CN102494439B - Photovoltaic photo-thermal energy-storage heat pump system - Google Patents

Photovoltaic photo-thermal energy-storage heat pump system Download PDF

Info

Publication number
CN102494439B
CN102494439B CN 201110403449 CN201110403449A CN102494439B CN 102494439 B CN102494439 B CN 102494439B CN 201110403449 CN201110403449 CN 201110403449 CN 201110403449 A CN201110403449 A CN 201110403449A CN 102494439 B CN102494439 B CN 102494439B
Authority
CN
China
Prior art keywords
photovoltaic
photothermal
heat pump
energy
valve
Prior art date
Application number
CN 201110403449
Other languages
Chinese (zh)
Other versions
CN102494439A (en
Inventor
方贵银
单锋
陈智
曹磊
Original Assignee
南京大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京大学 filed Critical 南京大学
Priority to CN 201110403449 priority Critical patent/CN102494439B/en
Publication of CN102494439A publication Critical patent/CN102494439A/en
Application granted granted Critical
Publication of CN102494439B publication Critical patent/CN102494439B/en

Links

Classifications

    • Y02B30/72

Abstract

The invention discloses a photovoltaic photo-thermal energy-storage heat pump system and belongs to the field of solar heat-collection and energy-storage heat pumps. According to the photovoltaic photo-thermal energy-storage heat pump system, a photovoltaic photo-thermal evaporator is combined with an energy-storage heat pump, cold and hot water can be supplied indoors under a refrigeration operation condition by connecting the photovoltaic photo-thermal energy-storage heat pump system with a four-way reversing valve and a plurality of throttle valves, heat and hot water can be supplied indoors under a heating operation condition, and meanwhile, the conversion efficiency of photovoltaic cells is improved by reducing the working temperature of the photovoltaic cells. The photovoltaic photo-thermal energy-storage heat pump system has the advantages of environment protection, energy saving, safety and energy efficiency higher than that of the conventional single system, and improves the photovoltaic conversion efficiency, the photo-thermal conversion efficiency and the energy efficiency of the heat pump system.

Description

A kind of photovoltaic and photothermal energy-storage heat pump system

Technical field

The present invention relates to solar energy heating, energy-storage heat pump field, relate in particular to a kind of photovoltaic and photothermal energy-storage heat pump system.

Background technology

In recent years, the heat pump techniques development more and more comes into one's own owing to it has energy-efficient advantage rapidly.Under the same conditions, the power consumption of heat-pump water heater only is 1/3 to 1/4 of an electric heater, and therefore, its energy-saving potential is huge.But heat pump assembly is not good enough in the application stability in a lot of fields.Solar heat pump can effectively utilize solar energy, reduces the thermal-arrest cost, but solar energy itself is because of factor instabilities such as latitude, weather, seasons, and it is not all right to add thermal effect during the solar energy deficiency, and the user is scalded in the words over-heating of solar continuous abundance easily.

Solar energy power generating is to utilize semi-conductive photovoltaic effect that transform light energy is electric energy.In the practical application of solar energy power generating, the light-photoelectric transformation efficiency of photovoltaic apparatus is subjected to people's attention always.For present photovoltaic cell, the solar energy on surface has and is not converted into electric energy more than 80%, but is converted into heat energy, and photovoltaic battery temperature is raise, and especially when solar irradiation is strong, can cause power conversion efficiency (pce) sharply to descend.Existing photovoltaic cell conversion efficiency has only 8% ~ 15%, if the problem that heats up of resolution system not, the conversion effect of photovoltaic cell will be had a greatly reduced quality.

Occurred the photovoltaic and photothermal evaporimeter now, constructed runner, taken away heat, reduced photovoltaic battery temperature, thereby improve the photovoltaic cell conversion efficiency by fluid (as cold-producing medium etc.) at the back side of photovoltaic cell component.But a large amount of heats of fluid removal all do not cause people's attention, not by good good utilisation.

Summary of the invention

Goal of the invention: the purpose of this invention is to provide a kind of photovoltaic and photothermal energy-storage heat pump system, can effectively utilize the energy of photovoltaic, photo-thermal conversion, and be used for air-conditioning system and realize refrigeration, heat the function with heat supply water.

Technical scheme: for achieving the above object, a kind of photovoltaic and photothermal energy-storage heat pump of the present invention system comprises: choke valve, four-way change-over valve, outdoor heat exchanger, indoor heat exchanger, compressor, regenerator, photovoltaic and photothermal evaporimeter and in establish the water heater of heat(ing) coil; Described compressor outlet is connected with four-way change-over valve through the heat(ing) coil of water heater, the inlet of compressor links to each other with four-way change-over valve, one end of outdoor heat exchanger is connected with four-way change-over valve, the other end is divided into two branch roads, article one, be communicated to the photovoltaic and photothermal evaporimeter through the first throttle valve, another is communicated to indoor heat exchanger by regenerator, second choke valve successively, and the described indoor heat exchanger other end is connected with four-way change-over valve; The described photovoltaic and photothermal evaporimeter other end is communicated to a side mouth of regenerator through the 3rd choke valve, and another side mouth of described regenerator links to each other with four-way change-over valve.

Photovoltaic and photothermal energy-storage heat pump of the present invention system, the evaporimeter of photovoltaic cell component and heat pump is combined into one, constitute the photovoltaic and photothermal evaporimeter, in the solar irradiation that system receives, shortwave irradiation is formed electric current output by photovoltaic cell by the photovoltaic conversion, and long wave irradiation is by the evaporation heat absorption thermal source of photo-thermal conversion as heat pump.In order to utilize these thermals source preferably, on the one hand, because the evaporation heat-absorbing action of heat pump working medium, the photovoltaic cell evaporator operation is in lower temperature range, thereby effectively cooled off, and photovoltaic conversion efficiency and photo-thermal conversion efficiency are improved simultaneously; On the other hand, solar radiation is used as the thermal source of heat pump by photo-thermal conversion, has improved the evaporating temperature and the evaporating pressure of heat pump, makes the Energy Efficiency Ratio of heat pump be improved.Solar energy is efficiently utilized from photovoltaic, two aspects of photo-thermal.The present invention can be to indoor cooling, heat supply water when cooling condition, can be when heating condition to indoor heating, heat supply water, can also reduce the operating temperature of photovoltaic cell through heat exchange by the cold-producing medium of pressing in the low temperature, and improve the conversion efficiency of photovoltaic cell.

As further optimization of the present invention and additional, photovoltaic and photothermal energy-storage heat pump of the present invention system also comprises device for drying and filtering, gas-liquid separator, liquid distributor, indoor units blower fan, outdoor unit blower fan, and the present invention also is provided with some magnetic valves and is used for the control system break-make.Further again, the present invention also is provided with electronic control system, realizes the control to each assembly of system and magnetic valve.

Obtain temperature required hot water for the convenience of the users, simultaneously for the stability that increases system reduces system's hidden danger, described compressor outlet also is provided with a heat release bypass that is used to discharge unnecessary heat and is communicated to four-way change-over valve.After discharging enough heats in the heat(ing) coil of compressed machine refrigerant compressed at water heater and both reaching fixed temperature, open the heat release bypass, cold-producing medium is directly introduced outdoor heat exchanger or indoor heat exchanger release heat through four-way change-over valve.For cooling condition, unnecessary heat is discharged into outdoor heat exchanger; For heating condition, unnecessary heat enters indoor heat exchanger.

For realizing the break-make of heat release bypass, described heat release bypass is provided with magnetic valve.

Described photovoltaic and photothermal evaporimeter is any one of tube-sheet type, wing pipe type, flat pipe type, coil pipe type photovoltaic and photothermal evaporimeter.The coil pipe of described photovoltaic and photothermal evaporimeter comprises any one of light pipe, screwed pipe, finned tube, and coil pipe is that copper tube or aluminium-alloy pipe are made.

The heat(ing) coil of described water heater comprises any one of spiral coil, serpentine coil, U-shaped coil pipe, and described heat(ing) coil is any one of light pipe, screwed pipe, finned tube, and described heat(ing) coil is that any one of copper tube, aluminium-alloy pipe, steel pipe made.

Described first throttle valve, second choke valve, the 3rd choke valve are heating power expansion valve or electric expansion valve.

As prioritization scheme of the present invention, for the electric energy that photovoltaic cell is provided is used for heat pump, described photovoltaic and photothermal evaporimeter is provided with the AC/DC inverter, to realize providing part or even whole electric energy to heat pump.

Beneficial effect: the environmental protection of a kind of photovoltaic and photothermal energy-storage heat pump of the present invention system, energy-conservation, safety, made full use of regenerative resource, by reducing the operating temperature of photovoltaic cell, improve the conversion efficiency of photovoltaic cell, can be when cooling condition to indoor cooling, heat supply water, can be when heating condition to indoor heating, heat supply water.The present invention has realized the integrated of photovoltaic utilization, solar thermal utilization and heat pump air conditioner, systematic function exceeds original each independent system, the total utilization ratio of solar energy reaches more than 85%, and the photovoltaic conversion efficiency reaches more than 20%, and the Energy Efficiency Ratio of heat pump reaches more than 3.5.

Description of drawings

Fig. 1 is a cooling condition systematic cyclic graph of the present invention;

Fig. 2 is a heating condition systematic cyclic graph of the present invention;

Fig. 3 is the pressure-enthalpy chart under the cooling condition of the present invention, alphabetical corresponding among the letter among the figure and Fig. 1, P kThe expression condensing pressure, P mThe expression intermediate pressure, P oThe expression evaporating pressure;

Fig. 4 is the pressure-enthalpy chart under the heating condition of the present invention, alphabetical corresponding among the letter among the figure and Fig. 2, P kThe expression condensing pressure, P mThe expression intermediate pressure, P oThe expression evaporating pressure.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is done further explanation.

With reference to figure 1, shown in Figure 2, photovoltaic and photothermal energy-storage heat pump of the present invention system comprises: four-way change-over valve 1, outdoor heat exchanger 2, indoor heat exchanger 3, compressor 4, regenerator 5, photovoltaic and photothermal evaporimeter 6 and in establish the water heater 8 of heat(ing) coil 7; Compressor 4 outlets are connected with four-way change-over valve 1 through the heat(ing) coil 7 of water heater 8, the inlet of compressor 4 links to each other with four-way change-over valve 1, one end of outdoor heat exchanger 3 is connected with four-way change-over valve 1, the other end is divided into two branch roads, article one, be communicated to photovoltaic and photothermal evaporimeter 6 through first throttle valve 9, another is communicated to indoor heat exchanger 3 by regenerator 5, second choke valve 10 successively, and indoor heat exchanger 3 other ends are connected with four-way change-over valve 1; Photovoltaic and photothermal evaporimeter 6 other ends are communicated to a side mouth of regenerator 5 through the 3rd choke valve 11, and another side mouth of regenerator 5 links to each other with four-way change-over valve 1.Compressor 4 outlet also is provided with a heat release bypass 12 that is used to discharge unnecessary heat and is communicated to four-way change-over valve 1, and heat release bypass 12 is provided with first magnetic valve 13.First throttle valve 9, second choke valve 10, the 3rd choke valve 11 are heating power expansion valve, and also replaceable is electric expansion valve.Photovoltaic and photothermal evaporimeter 6 is provided with AC/DC inverter 14, links to each other AC/DC inverter 14 output 220V alternating currents, the operation of heat pump system by cable.Water heater 8 is provided with cold water inlet and hot water outlet, and cold water inlet is provided with second magnetic valve 15.Between outdoor heat exchanger 2 and first throttle valve 9, outdoor heat exchanger 2 and regenerator 5, be respectively equipped with the 3rd magnetic valve 16 and the 4th magnetic valve 17.

Of the present invention with single heat pump, photovoltaic system and photo-thermal system compare, and performance all is improved to some extent.On the one hand, because the evaporation heat-absorbing action of heat pump working medium, the photovoltaic cell evaporator operation is in lower temperature range, thereby effectively cooled off, and photovoltaic conversion efficiency and photo-thermal conversion efficiency are improved simultaneously; On the other hand, solar radiation is used as the thermal source of heat pump by photo-thermal conversion, has improved the evaporating temperature and the evaporating pressure of heat pump, makes the Energy Efficiency Ratio of heat pump be improved.

In order better the present invention to be set forth, describe with regard to the cooling condition and the heating condition of this system respectively below.

With reference to figure 1, shown in Figure 3, when photovoltaic and photothermal energy-storage heat pump of the present invention system during at cooling condition, four-way change-over valve 1 is in the refrigeration position, and 8 outlets of instant heating hydrophone are communicated to outdoor heat exchanger 2 through four-way change-over valve 1, and the outlet of indoor heat exchanger 3 is communicated to compressor 4 inlets through four-way change-over valve 1.The 3rd magnetic valve 16, the 4th magnetic valve 17 are opened.The refrigerant liquid that flows out from outdoor heat exchanger 2 is divided into two branch roads, and one flows into 3 evaporation heat absorptions in the indoor heat exchanger by after regenerator 5, the 10 throttling step-downs of second choke valve, produces refrigeration; Another flows into the heat that evaporation absorption photovoltaic cell produces in the photovoltaic and photothermal evaporimeter 6 after 9 throttlings of first throttle valve are depressured to intermediate pressure, the operating temperature of photovoltaic cell is reduced, thereby improves the conversion efficiency of photovoltaic cell.As can be seen from Figure 3, constant enthalpy line segment c-d represents that cold-producing medium reduces to intermediate pressure from condensing pressure under first throttle valve 9 throttling hypotensive effects, and the cold-producing medium after the step-down has absorbed the heat that photovoltaic cell produces; Constant enthalpy line segment e-f represents that cold-producing medium reduces to evaporating pressure from middle pressure under the 3rd choke valve 11 throttling hypotensive effects, makes cold-producing medium enter compressor 4 with vapor form and circulates next time.The cold-producing medium that flows out from photovoltaic and photothermal evaporimeter 6 is depressured to evaporating pressure after regenerator 5 one side entrances enter in the regenerator 5 absorbs heat through the 3rd choke valve 11, please refer to Fig. 3, because one tunnel cold-producing medium is in the evaporation heat absorption of regenerator 5, it is cold excessively to make another road enter the cold-producing medium of regenerator 5, as the isobaric line segment c-g among Fig. 3, thereby realized that cold-producing medium crosses cold effect, so that increase the refrigerating capacity of indoor heat exchanger 3.Refrigerant vapour in indoor heat exchanger 3 and regenerator 5 after the heat absorption converges after four-way change-over valve 1 enters compressor 4, discharge the compressed machine of refrigerant vapour 4 compression backs, enter heat(ing) coils 7 in the water heater 8 and make water heat temperature raising in the water heater 8, domestic water is provided, refrigerant vapour from 7 outflows of water heater 8 heat(ing) coils, continue to emit heat through four-way change-over valve 1 flowed into chamber external heat exchanger 2 again, condensation forms refrigerant liquid.

With reference to figure 2, shown in Figure 4, when photovoltaic and photothermal energy-storage heat pump of the present invention system during at heating condition, four-way change-over valve 1 is in and heats the position, and 8 outlets of instant heating hydrophone are communicated to indoor heat exchanger 3 through four-way change-over valve 1, and outdoor heat exchanger 2 outlets are communicated to compressor 4 inlets through four-way change-over valve 1.Cold-producing medium is discharged by compressor 4 compression backs, the heat(ing) coil 7 of inflow water heater 8 makes the water heat temperature raising in the water heater 8, life hot water is provided, as isobar section b-k among Fig. 4, the cold-producing medium that flows out from water heater 8 heat(ing) coils 7 flows into indoor heat exchanger 3 respectively and regenerator 5 is further emitted heat, and indoor heat exchanger 3 heats to indoor heat release.Condensed refrigerant liquid is through the 10 throttling step-downs of second choke valve, shown in constant enthalpy line segment h-g among Fig. 4, cold-producing medium after the step-down flows into regenerator 5 evaporation heat absorptions, shown in isobar section g-i among Fig. 4, thereby the cold-producing medium that regenerator 5 one side entrances are flowed into must be cold, flow out through the opposite side outlet, after 11 throttlings of the 3rd choke valve are depressured to intermediate pressure, flow into the heat that evaporation absorption photovoltaic cell produces in the photovoltaic and photothermal evaporimeter 6, shown in isobar section e-d among Fig. 4, the operating temperature of photovoltaic cell is reduced, improve the conversion efficiency of photovoltaic cell.Because the throttling hypotensive effect of second choke valve 10, make the cold-producing medium that comes out from regenerator 5 cold excessively, shown in isobar section k-f among Fig. 4, increased from the caloric receptivity of photovoltaic and photothermal evaporimeter 6.The cold-producing medium that flows out from photovoltaic and photothermal evaporimeter 6 is after 9 throttlings of first throttle valve are depressured to evaporating pressure, as constant enthalpy line segment d-c among Fig. 4, converge with the cold-producing medium that flows out from regenerator 5, flow into the heat of evaporation absorption chamber external environment in the outdoor heat exchanger 2, the cold-producing medium after the evaporation gasification is sucked compression through four-way change-over valve 1 by compressor 4.

Being designed for of heat release bypass 12 of the present invention solves the stable defective that heat pump exists, and unnecessary heat is discharged, and can use under cooling condition and heating condition.When the water temperature of water heater 8 reaches design temperature, in order to prevent that water temperature from continuing to raise, open first magnetic valve 13 of heat release bypass 12, emit heat through first magnetic valve 13 and four-way change-over valve 1 flowed into chamber external heat exchanger 2 from most of refrigerant vapour that compressor 4 is discharged.

The above only is a preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (6)

1. photovoltaic and photothermal energy-storage heat pump system is characterized in that this system comprises: four-way change-over valve (1), outdoor heat exchanger (2), indoor heat exchanger (3), compressor (4), regenerator (5), photovoltaic and photothermal evaporimeter (6) and in establish the water heater (8) of heat(ing) coil (7); The heat(ing) coil (7) of described compressor (4) outlet through water heater (8) is connected with four-way change-over valve (1), the inlet of compressor (4) links to each other with four-way change-over valve (1), one end of outdoor heat exchanger (2) is connected with four-way change-over valve (1), the other end is divided into two branch roads, article one, be communicated to photovoltaic and photothermal evaporimeter (6) through first throttle valve (9), another is communicated to indoor heat exchanger (3) by regenerator (5), second choke valve (10) successively, and described indoor heat exchanger (3) other end is connected with four-way change-over valve (1); Described photovoltaic and photothermal evaporimeter (6) other end is communicated to a side mouth of regenerator (5) through the 3rd choke valve (11), and another side mouth of described regenerator (5) links to each other with four-way change-over valve (1).
2. a kind of photovoltaic and photothermal energy-storage heat pump according to claim 1 system is characterized in that: described compressor (4) outlet also is provided with a heat release bypass (12) that is used to discharge unnecessary heat and is communicated to four-way change-over valve (1).
3. a kind of photovoltaic and photothermal energy-storage heat pump according to claim 2 system, it is characterized in that: described heat release bypass (12) is provided with magnetic valve (13).
4. a kind of photovoltaic and photothermal energy-storage heat pump according to claim 1 system is characterized in that: described photovoltaic and photothermal evaporimeter (6) is any one of tube-sheet type, wing pipe type, flat pipe type, coil pipe type photovoltaic and photothermal evaporimeter.
5. a kind of photovoltaic and photothermal energy-storage heat pump according to claim 1 system, it is characterized in that: described photovoltaic and photothermal evaporimeter (6) is provided with DC-AC inverter (14).
6. a kind of photovoltaic and photothermal energy-storage heat pump according to claim 1 system, it is characterized in that: described first throttle valve (9), second choke valve (10), the 3rd choke valve (11) are heating power expansion valve or electric expansion valve.
CN 201110403449 2011-12-07 2011-12-07 Photovoltaic photo-thermal energy-storage heat pump system CN102494439B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110403449 CN102494439B (en) 2011-12-07 2011-12-07 Photovoltaic photo-thermal energy-storage heat pump system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110403449 CN102494439B (en) 2011-12-07 2011-12-07 Photovoltaic photo-thermal energy-storage heat pump system

Publications (2)

Publication Number Publication Date
CN102494439A CN102494439A (en) 2012-06-13
CN102494439B true CN102494439B (en) 2013-07-24

Family

ID=46186283

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110403449 CN102494439B (en) 2011-12-07 2011-12-07 Photovoltaic photo-thermal energy-storage heat pump system

Country Status (1)

Country Link
CN (1) CN102494439B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525266A (en) * 2017-08-22 2017-12-29 合肥美的暖通设备有限公司 The control method of evaporator assemblies, water heater and water heater

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104456688B (en) * 2014-12-02 2017-05-31 北京特泽热力工程设计有限责任公司 Central heating and cooling association system with energy storage tank
CN106568118A (en) * 2016-11-14 2017-04-19 太原理工大学 Condensation solar energy heat pump heating power generation system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000179970A (en) * 1998-12-11 2000-06-30 Sanyo Electric Co Ltd Air conditioning system
CN2443276Y (en) * 2000-10-12 2001-08-15 季杰 Integrated domestic air-conditioner and water heater
JP3211374B2 (en) * 1991-05-21 2001-09-25 ソニー株式会社 Semiconductor device and method of manufacturing semiconductor device
CN1959299A (en) * 2006-11-09 2007-05-09 中国科学技术大学 Multifunctional integrative system of light-volt solar heat pump
EP2051027A2 (en) * 2007-10-19 2009-04-22 Stiebel Eltron GmbH & Co. KG Heat pump assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03211374A (en) * 1990-01-12 1991-09-17 Matsushita Electric Ind Co Ltd Cooling and heating apparatus with hot-water supply device and its control method
JPH0450839A (en) * 1990-06-15 1992-02-19 Konica Corp Heat developable color photosensitive material
JP2980022B2 (en) * 1996-03-19 1999-11-22 ダイキン工業株式会社 Heat pump water heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3211374B2 (en) * 1991-05-21 2001-09-25 ソニー株式会社 Semiconductor device and method of manufacturing semiconductor device
JP2000179970A (en) * 1998-12-11 2000-06-30 Sanyo Electric Co Ltd Air conditioning system
CN2443276Y (en) * 2000-10-12 2001-08-15 季杰 Integrated domestic air-conditioner and water heater
CN1959299A (en) * 2006-11-09 2007-05-09 中国科学技术大学 Multifunctional integrative system of light-volt solar heat pump
EP2051027A2 (en) * 2007-10-19 2009-04-22 Stiebel Eltron GmbH & Co. KG Heat pump assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525266A (en) * 2017-08-22 2017-12-29 合肥美的暖通设备有限公司 The control method of evaporator assemblies, water heater and water heater

Also Published As

Publication number Publication date
CN102494439A (en) 2012-06-13

Similar Documents

Publication Publication Date Title
CN103090485B (en) Air conditioning system for restaurant
CN202709311U (en) Air conditioner system
CN102767880B (en) A kind of heat pipe hot pump hybrid system
CN101403521B (en) Solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system
CN101963412B (en) Solar energy and electric energy combined heat pump system and cooling and heating method
CN100385184C (en) Combined system of fuel battery and air source heat pump water heater
CN1515850A (en) Unit solar energy heat pump air conditioner and hot water system
CN101240925B (en) Solar energy absorption type liquid dehumidifying air-conditioning system
CN201935476U (en) Heat recovery type air-cooled heat pump unit
CN103398505B (en) A kind of associating heat pump and solar water HVAC system
CN201819477U (en) Direct-current frequency-conversional multi-connected multifunction air-conditioner
CN100453926C (en) Multifunctional integrative system of light-volt solar heat pump
CN101571330B (en) Multifunctional frost-free solar-assisted heat pump system
CN200996757Y (en) Double-source and operating mode hot-pump energy-saving system
CN201177341Y (en) Natural energy fresh air ventilating energy-saving air conditioner
CN202083061U (en) Solar absorbing type air conditioning device
CN103307683B (en) A kind of heat pipe air conditioner all-in-one
CN101900457A (en) Shower, heating and air conditioning complex system device for producing hot water by using solar energy, air source and low power
CN105222385A (en) A kind of Trans-critical cycle CO 2combined heat-pump system
CN205351809U (en) Changes in temperature circulation system for house
CN102645055B (en) Adaptively-matched solar auxiliary air source heat pump device
CN201163073Y (en) Heat pump type air conditioner apparatus with fast water-heating function
CN103983042B (en) The indoor cold-hot integrated system of a kind of solar energy
CN201599983U (en) Total heat recovery air cooled heat pump unit
CN103727703B (en) A kind of recycling cold, heat and power triple supply system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130724

Termination date: 20141207