CN105928253A - Solar energy, geotherm and air energy comprehensive utilization heat pump system - Google Patents
Solar energy, geotherm and air energy comprehensive utilization heat pump system Download PDFInfo
- Publication number
- CN105928253A CN105928253A CN201610331207.6A CN201610331207A CN105928253A CN 105928253 A CN105928253 A CN 105928253A CN 201610331207 A CN201610331207 A CN 201610331207A CN 105928253 A CN105928253 A CN 105928253A
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- heat
- water
- heat exchange
- pump
- air energy
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Classifications
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
Abstract
The invention provides a solar energy, geotherm and air energy comprehensive utilization heat pump system. The system comprises a solar heat source, a geothermal source, an air energy heat source, a heat pump unit and an output end; the solar heat source includes a heat collecting pipe and an insulation water tank; the geothermal source includes a well; the air energy heat source includes a fin heat exchanger; a first water circulating loop is arranged between the insulation water tank and the well; the fin heat exchanger includes a heat exchange fin, a snake-shaped heat exchange pipe and a fan fixed with one another; the snake-shaped heat exchange pipe is connected with the heat pump unit and the output end; a second water circulating loop is arranged between the insulation water tank and the fin heat exchanger; a heat exchange section is arranged in the second water circulating loop; and the heat exchange section is formed by a heat exchange copper pipe fixed corresponding to the fin heat exchanger. The system can comprehensively use solar energy, geotherm and air energy synchronously to obtain higher heating efficiency; and a compressor has a shorter fixed working loop, so the system is lower in hardware cost, and is more stable in working performance.
Description
Technical field
The present invention relates to energy device field, especially, relate to a kind of heat pump.
Background technology
At present, source pump has been widely used for HVAC field, such as air-conditioning, floor heating, air-source water heater etc.；But for the single energy, in the situation that ambient temperature is relatively low, be often difficult to fully meet actual demand；It is known that heat pump is when carrying out heating work, extracts heat from cold end, be delivered to hot junction, in the process, as cold warm end temperature difference is relatively big, then will make the mechanical efficiency degradation of heat pump；To this end, in the extraction process of the single energy, in the extraction process for air energy, as ambient temperature is relatively low, then source pump is extremely inefficient, causes serious power consumption.To this end, have some patent documentations or existing design at present, use the mode of multiterminal heat absorption, obtain relatively large number of external heat；But existing this kind design, commonly used multichannel refrigerant-cycle systems, i.e. for everywhere thermal source, it is respectively provided with one group of heat exchange copper tube being filled with cold-producing medium, each group heat exchange copper tube is connected to compressor by multiple-way valve, then by control system according to the temperature regime of each thermal source, switches blood circulation, i.e. switching compressor operating loop, to realize the heating operation of greater efficiency.But owing to the distribution of each thermal source often differs larger distance, this kind of design will expend substantial amounts of copper pipe and cold-producing medium, not only cost of investment is increased dramatically, and owing to the circulating path of cold-producing medium is significantly increased, cause the less stable of system, fault rate is higher, it is difficult to continues and works efficiently.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of solar energy, underground heat and air energy integrated and utilize heat pump, solar energy, geothermal energy, air can be comprehensively utilized by this system simultaneously, to obtain higher heating efficiency, and compressor has shorter and fixing performance loop, hardware cost is relatively low, and service behaviour is more stable.
The technical solution adopted for the present invention to solve the technical problems is: this solar energy, underground heat and air energy integrated utilize heat pump to include solar source, geothermal source, air energy thermal source, source pump, outfan；Described solar source includes thermal-collecting tube, attemperater；Described geothermal source includes well；Described air energy thermal source includes finned heat exchanger；There is between described attemperater and well the first water-flow circuit, only when water temperature in the water temperature in described attemperater is less than well, described first water-flow circuit work, make attemperater and the water circulation flowing in well；Heat exchange fin that described finned heat exchanger includes interfixing, snakelike heat exchange tube, fan, described snakelike heat exchange tube connects described source pump and outfan；There is between described attemperater and finned heat exchanger the second water-flow circuit, described second water-flow circuit has one section of heat exchanging segment, this heat exchanging segment is made up of heat exchange copper tube relatively-stationary with described finned heat exchanger, and the heat of described heat exchange copper tube can be transferred in described snakelike heat exchange tube；Water body in described attemperater can circulate in described second closed circuit, during and if only if described outfan is more than setting value with the circumstance of temperature difference residing for described finned heat exchanger, and described second closed circuit work.
As preferably, described source pump includes compressor, expansion valve and connects pipeline；Described outfan includes the condenser being made up of heat exchanger tube.
As preferably, in described first water-flow circuit, the second water-flow circuit, do not constituted by insulating tube with described well, attemperater, the part of finned heat exchanger heat exchange, to avoid the midway of heat to run off.
As preferably, in described first water-flow circuit, the second water-flow circuit, all string has circulating pump, electromagnetic valve；Described circulating pump realizes circulating of water body, described solenoid limit first, second water-flow circuit in a non-operative state, the free-flowing of water body.
As preferably, the top of described well is built with a piece of collection hot-zone；The area of described collection hot-zone is not less than 4 times of well cross-sectional area；Described collection hot-zone includes the earth that submerges, and surrounds the heat preservation tank of well；The notch of described heat preservation tank elevates above the soil, and is coated with transparent glass on this notch；Being lined with heat carrier in earth in described heat preservation tank, described heat carrier extends to the bottom of well.Further, the lower surface of described transparent glass has been coated with infrared reflection film, to suppress the heat of earth to escape with infra-red radiation form；Described heat carrier is metallic plate, and not only heat-conducting area is big, and lays conveniently.
As preferably, the heat exchanging segment in described second water-flow circuit is arranged at the inside of the snakelike heat exchange tube of described finned heat exchanger, coaxially extends with described snakelike heat exchange tube；So that the heat of heat exchanging segment is directly passed to the cold-producing medium in snakelike heat exchange tube, and avoid under the brushing of the fan of finned heat exchanger, spill into external environment in a large number.Further, the end of described snakelike heat exchange tube connects the first port of a three-way device, second port of described three-way device connects described source pump, and the 3rd port is for being passed by the heat exchange copper tube of described heat exchanging segment, to realize the mutually isolated of water-flow circuit and refrigerant circulation loop.
The beneficial effects of the present invention is: this solar energy, underground heat and air energy integrated utilize heat pump when heating, first pass through source pump and extract heat from the air at described finned heat exchanger place, and are discharged into described outfan；When described outfan is more than setting value with the circumstance of temperature difference residing for finned heat exchanger, that is heating efficiency relatively low time, the water body in the attemperater of described solar source is made by the second water-flow circuit, finned heat exchanger to be heated, so that it is guaranteed that the temperature difference between the two of source pump heat-exchange end is in lower value, to ensure heating efficiency；Additionally, when air energy, solar energy are the most under-supply, when causing the water temperature in attemperater to be down to relatively low, then by described first water-flow circuit, the water body in well is made to neutralize with the water circulation in attemperater, thus by subsoil water rich in heat be delivered to attemperater, and be finally delivered to finned heat exchanger；Native system, by the method drawing air energy, solar energy, geothermal energy according to condition step by step, makes the various energy all just called needing most when, so that the various energy can obtain the utilization of peak efficiency, has saved natural energy resources largely.On the other hand, owing to only arranging a shorter and fixing compressor operating loop in native system, therefore hardware cost is relatively low, and service behaviour is more stable.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that this solar energy, underground heat and air energy integrated utilize heat pump.
Fig. 2 is that this solar energy, underground heat and air energy integrated utilize in heat pump, an embodiment schematic diagram of well.
Fig. 3 is that this solar energy, underground heat and air energy integrated utilize in heat pump, embodiment one schematic diagram of finned heat exchanger.
Fig. 4 is that this solar energy, underground heat and air energy integrated utilize in heat pump, in the embodiment two of finned heat exchanger, and the cooperation schematic diagram of the heat exchanging segment of snakelike heat exchange tube and the second water-flow circuit.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings:
As it is shown in figure 1, this solar energy, underground heat and air energy integrated utilize heat pump to include solar source 1, geothermal source 2, air energy thermal source 3, source pump 4, outfan 5；Described solar source includes thermal-collecting tube 11, attemperater 12；Described geothermal source 2 includes well 21；Described air energy thermal source 3 includes finned heat exchanger.
Described source pump 4 is located in air energy thermal source 3, mainly includes compressor, expansion valve and relevant connection pipeline；Being actually that source pump 4 is equivalent to outdoor machine of air-conditioner with air energy thermal source 3, this is conventional design, no longer repeats with regard to details.Described outfan 5 includes the condenser being made up of heat exchanger tube, can be with fan, as heating installation follower, it is also possible to be located in water, as hot water generator.
Having the first water-flow circuit 61 between described attemperater 12 and well 21, only when water temperature in the water temperature in described attemperater 12 is less than well 21, described first water-flow circuit 61 works, and makes attemperater 12 and the water circulation flowing in well 21.Specifically, this first water-flow circuit 61 has an intake pipe and a return pipe, and the water suction attemperater 12 in well 21, return pipe can then be made the water in attemperater be back to well by intake pipe；In order to make to be formed in the first water-flow circuit 61 circulation waterway, can concatenate one-way circulation pump, and concatenate electromagnetic valve in return pipe in described intake pipe, when needs water circulation, ON cycle pump, electromagnetic valve, the most both close simultaneously；Certainly this kind of water-flow circuit 61 also has more method for designing, the most easily realizes in HVAC field, and the place of the creation main points of non-invention.
Heat exchange fin 71 that the embodiment one of described finned heat exchanger as it is shown on figure 3, include interfixes, snakelike heat exchange tube 72, fan (not shown), described snakelike heat exchange tube 72 connects described source pump 4 and outfan 5.There is between described attemperater 12 and finned heat exchanger the second water-flow circuit 62, described second water-flow circuit 62 has one section of heat exchanging segment 621, this heat exchanging segment 621 is made up of heat exchange copper tube, in described finned heat exchanger, it is fixed on side by side on heat exchange fin 71 with snakelike heat exchange tube 72, make heat exchanging segment 621 obtain heat and can pass through metallic conductance, be transferred in snakelike heat exchange tube 72.
Water body in described attemperater 12 can circulate in described second closed circuit 62, certainly, realizes with electromagnetic valve also by circulating pump；During and if only if described outfan 5 is more than setting value with the circumstance of temperature difference residing for described finned heat exchanger, described second closed circuit 62 works.
It addition, in described first water-flow circuit the 61, second water-flow circuit 62, do not constituted by insulating tube with described well 21, attemperater 12, the part of finned heat exchanger heat exchange, to avoid the midway of heat to run off.
Above-mentioned solar energy, underground heat and air energy integrated utilize heat pump when heating, first pass through source pump 4 and extract heat from the air at described finned heat exchanger place, and are discharged into described outfan 5；When described outfan 5 is more than setting value with the circumstance of temperature difference residing for finned heat exchanger, that is heating efficiency relatively low time, the water body in the attemperater 12 of described solar source is made by the second water-flow circuit 62, finned heat exchanger to be heated, so that it is guaranteed that the temperature difference between the two of source pump 4 heat-exchange end is in lower value, to ensure heating efficiency；Additionally, when air energy, solar energy are the most under-supply, when causing the water temperature in attemperater 12 to be down to relatively low, then by described first water-flow circuit 61, the water body in well 21 is made to neutralize with the water circulation in attemperater 12, thus by subsoil water rich in heat be delivered to attemperater 12, and be finally delivered to finned heat exchanger；Native system, by the method drawing air energy, solar energy, geothermal energy according to condition step by step, makes the various energy all just called needing most when, so that the various energy can obtain the utilization of peak efficiency, has saved natural energy resources largely.On the other hand, owing to only arranging a shorter and fixing compressor operating loop in native system, therefore hardware cost is relatively low, and service behaviour is more stable.
For the embodiment two of described finned heat exchanger, unlike embodiment one, the heat exchanging segment 621 in described second water-flow circuit 62 is arranged at the inside of the snakelike heat exchange tube 72 of described finned heat exchanger, coaxially extends with described snakelike heat exchange tube 72；So that the heat of heat exchanging segment 621 is directly passed to the cold-producing medium in snakelike heat exchange tube 72, and avoiding under the brushing of the fan of finned heat exchanger, spill into external environment in a large number, this improves the utilization rate of heat to the full extent.Specifically, as shown in Figure 4, the end of described snakelike heat exchange tube 72 connects the first port 81 of a three-way device 8, second port 82 of described three-way device 8 connects described source pump 4,3rd port 83 is for being passed by the heat exchange copper tube of described heat exchanging segment 621, to realize the mutually isolated of water-flow circuit and refrigerant circulation loop.Program simple in construction, easy to assembly, it is easy to implement.
It addition, for described well 21, one embodiment is as in figure 2 it is shown, the top of described well 21 is built with a piece of collection hot-zone；The area of described collection hot-zone, not less than 4 times of well cross-sectional area, is equivalent to more than 2 times of a diameter of well diameter；Described collection hot-zone includes the earth 24 that submerges, and surrounds the heat preservation tank 22 of well 21；The notch of described heat preservation tank 22 elevates above the soil, and is coated with transparent glass 23 on this notch；Being lined with the heat carrier 25 being made up of metallic plate in earth in described heat preservation tank 22, described heat carrier 25 extends to the bottom of well.According to the program, the collection hot-zone on well 21 top can absorb solar energy in large area, be allowed to be transferred in well；Owing to being isolated by transparent glass 23 between collection hot-zone and the external world, therefore, extraneous air-flow is less for the heat impact in collection hot-zone, heat major part through transparent glass 23 is accumulated in the earth in collection hot-zone, and absorbed by well water via heat carrier 25, so that in geothermal energy under the situation of quickly extraction, the water temperature of well water is unlikely to rapid decrease.The lower surface of described transparent glass 23 can also be coated with infrared reflection film, to suppress the heat of earth to escape with infra-red radiation form.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of being made, equivalent, should be included within the scope of the present invention.
Claims (7)
1. solar energy, underground heat and air energy integrated utilize a heat pump, including solar source (1), geothermal source (2), air energy thermal source (3), source pump (4), outfan (5)；Described solar source includes thermal-collecting tube (11), attemperater (12)；Described geothermal source (2) includes well (21)；Described air energy thermal source (3) includes finned heat exchanger；It is characterized in that: there is between described attemperater (12) and well (21) the first water-flow circuit (61), only when the water temperature in described attemperater (12) is less than the water temperature in well (21), described first water-flow circuit (61) works, and makes attemperater (12) and the water circulation flowing in well (21)；Heat exchange fin (71) that described finned heat exchanger includes interfixing, snakelike heat exchange tube (72), fan, described snakelike heat exchange tube (72) connects described source pump (4) and outfan (5)；There is between described attemperater (12) and finned heat exchanger the second water-flow circuit (62), described second water-flow circuit (62) has one section of heat exchanging segment (621), this heat exchanging segment (621) is made up of heat exchange copper tube relatively-stationary with described finned heat exchanger, and the heat of described heat exchange copper tube can be transferred in described snakelike heat exchange tube (72)；Water body in described attemperater (12) can circulate in described second closed circuit (62), and during and if only if described outfan (5) is more than setting value with the circumstance of temperature difference residing for described finned heat exchanger, described second closed circuit (62) works.
Solar energy the most according to claim 1, underground heat and air energy integrated utilize heat pump, it is characterised in that: described source pump (4) includes compressor, expansion valve and connects pipeline；Described outfan (5) includes the condenser being made up of heat exchanger tube.
Solar energy the most according to claim 1, underground heat and air energy integrated utilize heat pump, it is characterized in that: in described first water-flow circuit (61), the second water-flow circuit (62), do not constituted by insulating tube with described well (21), attemperater (12), the part of finned heat exchanger heat exchange.
Solar energy the most according to claim 1, underground heat and air energy integrated utilize heat pump, it is characterised in that: in described first water-flow circuit (61), the second water-flow circuit (62), all string has circulating pump, electromagnetic valve；Described circulating pump realizes circulating of water body, described solenoid limit first, second water-flow circuit in a non-operative state, the free-flowing of water body.
Solar energy the most according to claim 1, underground heat and air energy integrated utilize heat pump, it is characterised in that: the top of described well (21) is built with a piece of collection hot-zone；The area of described collection hot-zone is not less than 4 times of well cross-sectional area；Described collection hot-zone includes the earth (24) that submerges, and surrounds the heat preservation tank (22) of well (21)；The notch of described heat preservation tank (22) elevates above the soil, and is coated with transparent glass (23) on this notch；Being lined with heat carrier (25) in earth in described heat preservation tank (22), described heat carrier (25) extends to the bottom of well
Solar energy according to claim 5, underground heat and air energy integrated utilize heat pump, it is characterised in that: the lower surface of described transparent glass (23) has been coated with infrared reflection film,.
Solar energy the most according to claim 1, underground heat and air energy integrated utilize heat pump, it is characterized in that: the heat exchanging segment (621) in described second water-flow circuit (62) is arranged at the inside of the snakelike heat exchange tube (72) of described finned heat exchanger, coaxially extend with described snakelike heat exchange tube (72), make the cold-producing medium that the heat of heat exchanging segment (621) is directly passed in snakelike heat exchange tube (72).
Solar energy the most according to claim 7, underground heat and air energy integrated utilize heat pump, it is characterized in that: the end of described snakelike heat exchange tube (72) connects first port (81) of a three-way device (8), second port (82) of described three-way device connects described source pump (4), 3rd port (83) is for being passed by the heat exchange copper tube of described heat exchanging segment (621), to realize the mutually isolated of water-flow circuit and refrigerant circulation loop.
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| CN201610331207.6A CN105928253B (en) | 2016-05-18 | 2016-05-18 | Solar energy, underground heat and air energy integrated utilize heat pump system |
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| CN201610331207.6A CN105928253B (en) | 2016-05-18 | 2016-05-18 | Solar energy, underground heat and air energy integrated utilize heat pump system |
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Cited By (4)
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| CN106685338A (en) * | 2016-12-14 | 2017-05-17 | 昆明理工大学 | Combined cooling-heating-power system realized by using solar energy, air energy, geothermal energy and air conditioning waste heat |
| CN110469895A (en) * | 2019-07-29 | 2019-11-19 | 合肥中南光电有限公司 | A kind of compound source heat pump system of solar energy-air source-underground heat |
| CN113776232A (en) * | 2021-08-03 | 2021-12-10 | 青岛理工大学 | Double-source subway source heat pump system, construction method and control method |
| CN116952880A (en) * | 2023-08-07 | 2023-10-27 | 江苏省环境科学研究院 | Detection system and detection method suitable for various media |
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| CN105928253B (en) | 2018-04-27 |
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