CN201262478Y - Carbon dioxide heat pump assisted solar water heater - Google Patents
Carbon dioxide heat pump assisted solar water heater Download PDFInfo
- Publication number
- CN201262478Y CN201262478Y CN 200820060750 CN200820060750U CN201262478Y CN 201262478 Y CN201262478 Y CN 201262478Y CN 200820060750 CN200820060750 CN 200820060750 CN 200820060750 U CN200820060750 U CN 200820060750U CN 201262478 Y CN201262478 Y CN 201262478Y
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- hot water
- solar
- carbon dioxide
- pump
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model relates to the water-heater technical filed which utilizes solar energy to heat. Carbon dioxide heat-pump auxiliary solar water heater consists of a trans-critical carbon dioxide heat-pump system, a hot water circulation system and a solar heating system which are connected mutually and form a loop. In the utility model, the carbon dioxide heat-pump water heater and a solar water heater are combined together, and four hot water preparing modes can be provided so as to meet the requirements of hot water supply in different areas with different climates; meanwhile, the utility model makes full use of the advantages of a trans-critical carbon dioxide heat pump water heater, 50 DEG C to 90 DEG C hot water can also be prepared even in severe cold area. Moreover, as natural working fluid carbon dioxide and solar energy are adopted, energy-conserving and environment-friendly effects can be achieved.
Description
Technical field
The utility model belongs to the technical field of water heaters of mainly utilizing solar energy to heat.
Background technology
Because be subjected to the restriction of the energy and environmental protection, all there is some deficiency in conventional water heaters.Traditional in the market water heater has three major types: coal-fired, oily, gas water heater, electric heater, solar water heater.
Coal-fired hot-water boiler because the problem of the insufficient and severe contamination atmosphere of burning of coal, has been prohibited by country in a lot of big or middle cities and have been used.
Gas heater will be discharged a large amount of waste gas in use, except carbon dioxide, also has unburnt product carbon monoxide in the waste gas, and intoxication accident takes place easily, and its efficiency of heating surface is about 80%.
Electric heater, its efficiency of heating surface is approximately 95%, and waste of energy is big.Though earth leakage protective is housed on the electric heater, electric shock accidents takes place when using electric heater easily.
Solar water heater belongs to environmental protection, energy-conserving product, but is subjected to the influence of weather bigger, and the zone and the time of use are very limited.
In addition, Teat pump boiler is also arranged on the market, but the working medium of these Teat pump boilers is generally traditional working medium such as R22, R410A, not only can produce greenhouse effects and damage the ozone layer, and these working medium will be produced hot water more than 60 ℃ can make that Compressor Discharge Pressure is too high, EER is low excessively, so the temperature of heat supply water is restricted.In addition at cold district, when environment temperature is very low, the easy frosting of evaporator with heat pump, leaving water temperature can not meet the demands, and heat pump efficiency is low, even can not work, so the territorial scope that Teat pump boiler uses is very limited.
Carbon dioxide is as natural medium, and advantage is that ODP is zero, and the GWP value is far smaller than CFCS and HFCS, compliance with environmental protection requirements; Adiabatic exponent is big, and compressor exhaust temperature is higher, satisfies the requirement of producing higher temperature hot water; Have good economy, and do not have the recovery problem; Good security and chemical stability, safety non-toxic, not flammable, at high temperature do not decompose the generation pernicious gas yet; In addition because CO
2Have good flowing and heat-transfer character, can significantly reduce the size of compressor and system, make whole system very compact.
Compare with conventional water heaters, the CO 2 trans-critical heat pump water heater mainly contains following advantage:
1, heat a certain amount of hot water, energy consumption only is 1/4 of electrical heating water heater and a gas heater;
2, can produce 90 ℃ of high-temperature-hot-waters, and the conventional heat pump water heater is generally produced hot water and is no more than 60 ℃;
3, at cold district, CO
2Heat pump can be kept higher heating load under low temperature environment, save the auxiliary spent energy of firing equipment greatly, and the use of conventional heat pump under low temperature environment is very limited.
The critical-cross carbon dioxide circulation is meant that carbon dioxide absorbs heat in evaporimeter under the condition of subcritical pressure, be higher than the circulation of heat release in gas cooler under the condition of critical pressure.
On the other hand, solar energy is primary energy as a kind of energy of cleaning, is again regenerative resource, and the unrivaled superiority of the mineral matter energy is arranged.Solar energy heating is meant utilizes ethylene glycol solution to absorb solar heat in solar thermal collector, the system of heat release in coil heat exchanger B and coil heat exchanger C.
The utility model content
The purpose of this utility model is exactly in conjunction with CO 2 trans-critical heat pump and solar energy heating advantage separately, and a kind of carbon dioxide heat-pump assisted solar hot water device is provided.
Inventor of the present utility model is at the pluses and minuses of the various water heaters existence of present use, consider carbon dioxide heat-pump technology and heliotechnics are combined, discovery can overcome the shortcoming of conventional water heaters, can bring into play the advantage of its energy-saving and environmental protection again, strengthen the practicality of water heater, improved the stability of system.
For reaching above-mentioned purpose, the concrete technical scheme that the utility model is taked is as follows:
A kind of carbon dioxide heat-pump assisted solar hot water device, by interconnecting, and the CO 2 trans-critical heat pump system, hot water cyclesystem, the solar heating system that form loop are formed.
Above-mentioned carbon dioxide heat-pump assisted solar hot water device, wherein the CO 2 trans-critical heat pump system comprises: the choke valve 1, evaporimeter 2, compressor 3 and the gas cooler 4 that connect successively with pipeline.Preferred scheme is that the electrical heating defrosting device also is housed on the evaporimeter.The working medium of circulation is carbon dioxide in the CO 2 trans-critical heat pump system.
Above-mentioned carbon dioxide heat-pump assisted solar hot water device, wherein hot water cyclesystem comprises: boiler 5, pump A6, check-valves A7, coil heat exchanger A8 with pipeline connects successively reach water inlet triple valve A9 and water outlet stop valve 10.
Above-mentioned carbon dioxide heat-pump assisted solar hot water device, wherein solar heating system comprises: pump B11, check-valves B12, solar thermal collector 13, triple valve B14, coil heat exchanger B15, triple valve C16 with pipeline connects successively reach the coil heat exchanger C17 in parallel with coil heat exchanger B15.The working medium of circulation is ethylene glycol in the solar heating system.Preferred scheme is, at the import and export of solar thermal collector differential temperature controller is installed also, in the exit of solar thermal collector temperature controller is installed.
Above-mentioned carbon dioxide heat-pump assisted solar hot water device, the CO 2 trans-critical heat pump system is connected with the coil heat exchanger C17 of solar heating system by evaporimeter 2; The CO 2 trans-critical heat pump system is connected with the coil heat exchanger A8 of hot water cyclesystem by gas cooler 4; Hot water cyclesystem is connected with the coil heat exchanger B15 of solar heating system by boiler 5.
The beneficial effects of the utility model:
The utility model combines carbon dioxide heat-pump water heater and solar water heater, provide four kinds to produce the hot water pattern: solar heating system is produced hot water, solar heating system and CO 2 trans-critical heat pump system separately and is produced hot water, CO 2 trans-critical heat pump system simultaneously and produce the auxiliary heating fumigators CO 2 trans-critical heat pump system of hot water, solar energy or electrical heating separately and produce hot water, can satisfy the annual effectively work in various climatic province.
In addition, the utility model makes full use of the advantage of CO 2 trans-critical heat pump water heater, even at severe cold area, also can produce 50 ℃ ~ 90 ℃ hot water.At last, the utility model adopts natural refrigerant carbon dioxide and renewable energy solar energy can reach the effect of energy-saving and environmental protection.
For example, in the period sunny, that intensity of solar radiation is very big, solar heating system is produced hot water separately and can be satisfied the demands; In sunny, intensity of solar radiation is not the very big period, can start CO 2 trans-critical heat pump system auxiliary as solar heating system, and two systems produce hot water simultaneously; Inadequate and do not have period of sunlight at sunlight, solar energy system can't effectively be worked, and hot water is produced in the isolated operation of CO 2 trans-critical heat pump system; In the winter of cold, operation CO 2 trans-critical heat pump system when sufficient sunlight is arranged, utilizes the solar heating system heating fumigators; When sunlight is inadequate, utilize the electric heater heating fumigators, thereby prevented the problem of evaporimeter frosting under cryogenic conditions.Severe cold area particularly can utilize the evaporimeter of solar heating system heating CO 2 trans-critical heat pump system, reaches the purpose of effective defrosting, has guaranteed the stable operation at low temperatures of CO 2 trans-critical heat pump system.
Simultaneously, the utility model can also be by the temperature difference △ t that detects solar thermal collector import and export ethylene glycol solution, the temperature t of exit ethylene glycol solution
Out, judge the start and stop situation of the opening direction of triple valve B, triple valve C and CO 2 trans-critical heat pump system, solar heating system, make the system can conversion automatically in various heating modes.
Description of drawings
Fig. 1 is the systematic schematic diagram of carbon dioxide heat-pump assisted solar hot water device.
Each component names is respectively among Fig. 1: the 1-choke valve; The 2-evaporimeter; The 3-compressor; The 4-gas cooler; The 5-boiler; 6,11-pump A and pump B; 7,12-check-valves A and check-valves B; 8,15,17-coil heat exchanger A, coil heat exchanger B, coil heat exchanger C; 9,14,16-triple valve A, triple valve B, triple valve C; 10-water outlet stop valve; The 13-solar thermal collector.
The specific embodiment
As shown in Figure 1, carbon dioxide heat-pump assisted solar hot water device described in the utility model, by interconnecting, and the CO 2 trans-critical heat pump system, hot water cyclesystem, the solar heating system that form loop are formed.The CO 2 trans-critical heat pump system comprises: the choke valve 1, evaporimeter 2, compressor 3 and the gas cooler 4 that connect successively with pipeline; Hot water cyclesystem comprises: boiler 5, pump A6, check-valves A7, coil heat exchanger A8 with pipeline connects successively reach water inlet triple valve A9 and water outlet stop valve 10; Solar heating system comprises: pump B11, check-valves B12, solar thermal collector 13, triple valve B14, coil heat exchanger B15, triple valve C16 with pipeline connects successively reach the coil heat exchanger C17 in parallel with coil heat exchanger B15.
The CO 2 trans-critical heat pump system is connected with the coil heat exchanger C17 of solar heating system by evaporimeter 2, the CO 2 trans-critical heat pump system is connected with the coil heat exchanger A8 of hot water cyclesystem by gas cooler 4, and hot water cyclesystem is connected with the coil heat exchanger B15 of solar heating system by boiler 5.
The working medium of circulation is carbon dioxide in the CO 2 trans-critical heat pump system, and the working medium of circulation is ethylene glycol in the solar heating system.
Carbon dioxide heat-pump assisted solar hot water device of the present utility model, preferred scheme is that the electrical heating defrosting device also is housed on evaporimeter; Import and export at solar thermal collector also is equipped with differential temperature controller, in the exit of solar thermal collector temperature controller is installed.
The utility model reasonably combines CO 2 trans-critical heat pump system and solar water heating system, by the temperature difference △ t that detects solar thermal collector import and export ethylene glycol solution, the temperature t of exit ethylene glycol solution
Out, judge the opening direction of triple valve B, triple valve C, thereby under different weather conditions, realize the automatic start-stop of CO 2 trans-critical heat pump system, solar heating system, system can be changed in various heating modes automatically.
Set a contrast temperature approach m for solar thermal collector import and export differential temperature controller.As △ t〉during m, illustrate that solar heating system can effectively work.Set two reduced temperature value t for the exit temperature controller of solar thermal collector
1, t
2(t
1T
2); Work as t
OutT
2The time, illustrative system is in non-cold season; Work as t
OutT
1The time, illustrate that solar energy produces hot water separately and can satisfy the demands; Work as t
2＜t
Out＜t
1The time, instruction book can not satisfy by solar energy produces required hot water requirement.
The concrete method of operation is as follows:
(1) solar heating system is produced the hot water pattern separately: when differential temperature controller, temperature controller detect △ t m, t
OutT
1The time, illustrate sunnyly, solar heating system can effectively be worked and solar energy is produced hot water separately and can be satisfied the demands.At this moment, as shown in the figure, a of triple valve B14, c two passages are connected, and the d of triple valve C16, e two passages are connected.Simultaneous temperature controller control CO 2 trans-critical heat pump system is out of service.Produce hot water separately so realize solar heating system.
(2) solar heating system and CO 2 trans-critical heat pump system produce the hot water pattern simultaneously: when differential temperature controller detect △ t m but temperature controller detect t
2＜t
Out＜t
1The time, illustrate sunnyly, solar energy system can effectively be worked but can not be satisfied the hot water demand.At this moment, as shown in the figure, a of triple valve B14, c two passages are connected, and the d of triple valve C16, e two passages are connected.Simultaneous temperature controller control CO 2 trans-critical heat pump system starts operation.Produce hot water simultaneously so realize solar heating system and CO 2 trans-critical heat pump system.
(3) the CO 2 trans-critical heat pump system produces the hot water pattern separately: when differential temperature controller detect △ t＜m, temperature controller detect t
OutT
2The time, illustrating that sunlight is not enough or do not have sunlight, solar heating system can't effectively be worked, but is in non-cold season.At this moment, B11 is out of service for the differential temperature controller control pump, and solar heating system is out of service.The CO 2 trans-critical heat pump of differential temperature controller control simultaneously system starts operation.Produce hot water separately so realize the CO 2 trans-critical heat pump system.
(4) winter operation pattern: when temperature controller detect t
Out＜t
2The time, illustrate to be in cold season the i.e. easy frosting of CO 2 trans-critical heat pump system.When differential temperature controller detect △ t during m, illustrate sunnyly, at this moment, as shown in the figure, a of triple valve B, b two passages are connected, the d of triple valve C, f two passages are connected, and realize that solar heating system gives evaporimeter 2 heating defrostings.Then realize the auxiliary heating fumigators of solar energy and the CO 2 trans-critical heat pump system produces hot water.When differential temperature controller detect during △ t＜m, illustrate that sunlight is inadequate, solar energy can't effectively be worked, and opens the defrosting of electric heater unit heating fumigators this moment.Thereby under the satisfied low ambient temperature situation in the winter time, realize providing 50 ℃ ~ 90 ℃ hot water.
The utility model water inlet pipe is connected with coil heat exchanger A8 with boiler 5 with triple valve 9.In the CO 2 trans-critical heat pump system operation phase, as shown in Figure 1, the i of triple valve A14, g two passages are connected, and make-up water is entering the hot water tank top by coil heat exchanger A8 heating earlier; System does not have the operation phase at CO 2 trans-critical heat pump, and the h of triple valve A14, g two passages are connected, and make-up water directly enters the boiler bottom.
Claims (6)
1. carbon dioxide heat-pump assisted solar hot water device, by interconnecting, and the CO 2 trans-critical heat pump system, hot water cyclesystem, the solar heating system that form loop are formed.
2. carbon dioxide heat-pump assisted solar hot water device as claimed in claim 1 is characterized in that: described CO 2 trans-critical heat pump system comprises: the choke valve (1), evaporimeter (2), compressor (3) and the gas cooler (4) that connect successively with pipeline.
3. carbon dioxide heat-pump assisted solar hot water device as claimed in claim 1, it is characterized in that: described hot water cyclesystem comprises: boiler (5), pump A (6), check-valves A (7), coil heat exchanger A (8) with pipeline connects successively reach water inlet triple valve A (9) and water outlet stop valve (10).
4. carbon dioxide heat-pump assisted solar hot water device as claimed in claim 1, it is characterized in that: described solar heating system comprises: pump B (11), check-valves B (12), solar thermal collector (13), triple valve B (14), coil heat exchanger B (15), triple valve C (16) with pipeline connects successively reach the coil heat exchanger C (17) in parallel with coil heat exchanger B (15).
5. carbon dioxide heat-pump assisted solar hot water device as claimed in claim 4 is characterized in that: the import and export at solar thermal collector also is provided with differential temperature controller, is provided with temperature controller in the exit of solar thermal collector.
6. carbon dioxide heat-pump assisted solar hot water device as claimed in claim 1, it is characterized in that: the CO 2 trans-critical heat pump system is connected with the coil heat exchanger C (17) of solar heating system by evaporimeter (2), the CO 2 trans-critical heat pump system is connected with the coil heat exchanger A (8) of hot water cyclesystem by gas cooler (4), and hot water cyclesystem is connected with the coil heat exchanger B (15) of solar heating system by boiler (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820060750 CN201262478Y (en) | 2008-08-27 | 2008-08-27 | Carbon dioxide heat pump assisted solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820060750 CN201262478Y (en) | 2008-08-27 | 2008-08-27 | Carbon dioxide heat pump assisted solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262478Y true CN201262478Y (en) | 2009-06-24 |
Family
ID=40808954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820060750 Expired - Fee Related CN201262478Y (en) | 2008-08-27 | 2008-08-27 | Carbon dioxide heat pump assisted solar water heater |
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| Country | Link |
|---|---|
| CN (1) | CN201262478Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742966A (en) * | 2014-01-06 | 2014-04-23 | 昆明东启科技股份有限公司 | Central heating system with co-operation of carbon dioxide heat pump and solar energy |
| CN105716299A (en) * | 2016-03-03 | 2016-06-29 | 河海大学常州校区 | Solar heat pump water heater |
| CN106225318A (en) * | 2016-07-25 | 2016-12-14 | 重庆大学 | Can total heat recovery air source heat pump system as low level heat energy with solar energy ground |
| CN107328103A (en) * | 2017-08-18 | 2017-11-07 | 中国扬子集团滁州扬子空调器有限公司 | Carbon dioxide combined heat pump hot water and handpiece Water Chilling Units and its control method |
| CN109028572A (en) * | 2018-09-19 | 2018-12-18 | 东莞市正旭新能源设备科技有限公司 | The control system and method for overlapping air heat source pump |
-
2008
- 2008-08-27 CN CN 200820060750 patent/CN201262478Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742966A (en) * | 2014-01-06 | 2014-04-23 | 昆明东启科技股份有限公司 | Central heating system with co-operation of carbon dioxide heat pump and solar energy |
| CN103742966B (en) * | 2014-01-06 | 2016-01-06 | 昆明东启科技股份有限公司 | A kind of CO2 heat pump and solar energy complementary operation central heating system |
| CN105716299A (en) * | 2016-03-03 | 2016-06-29 | 河海大学常州校区 | Solar heat pump water heater |
| CN106225318A (en) * | 2016-07-25 | 2016-12-14 | 重庆大学 | Can total heat recovery air source heat pump system as low level heat energy with solar energy ground |
| CN107328103A (en) * | 2017-08-18 | 2017-11-07 | 中国扬子集团滁州扬子空调器有限公司 | Carbon dioxide combined heat pump hot water and handpiece Water Chilling Units and its control method |
| CN107328103B (en) * | 2017-08-18 | 2024-02-09 | 安徽扬子空调股份有限公司 | Carbon dioxide composite heat pump hot water and cold water unit and control method thereof |
| CN109028572A (en) * | 2018-09-19 | 2018-12-18 | 东莞市正旭新能源设备科技有限公司 | The control system and method for overlapping air heat source pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20110827 |