CN102645055A - Adaptively-matched solar auxiliary air source heat pump device - Google Patents
Adaptively-matched solar auxiliary air source heat pump device Download PDFInfo
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Abstract
The invention provides an adaptively-matched solar auxiliary air source heat pump device. The device comprises a refrigerant circulation loop subsystem, a solar hot water circulation loop subsystem and a user hot water loop subsystem, wherein the refrigerant circulation subsystem is the core of the whole system and controls the energy conversion and heat transmission; the refrigerant circulation subsystem comprises a compressor (1), an indoor condenser (2), a capillary pipe (3) and a sleeve heat exchanger (4); a refrigerant outlet of the indoor condenser (2) is connected with an inlet of the capillary pipe (3); an outlet of the capillary pipe (3) is connected with an in-pipe refrigerant inlet (11) of the sleeve heat exchanger (4); and an in-pipe refrigerant outlet (13) of the sleeve heat exchanger (4) is connected with a gas inlet of the compressor (1). Through the invention, the heat in the solar air source heat pump system can be reasonably distributed, and the energy consumption of the building can be saved.
Description
Technical field
The present invention relates to the device that solar auxiliary air source heat pump improves heat pump winter operation performance, belong to building energy conservation and Refrigeration Engineering field.
Background technology
Air source heat pump is a kind of airborne thermal source that utilizes, and realizes that through importing a spot of high-grade thermal source low-grade heat source carries out a kind of heat pump type air conditioning system device of heat supply to the high-grade thermal source.Advantages such as air source heat pump is simple in structure with it, and operating cost is lower, and is easy to install are widely used in the modern architecture.In the green building field, air-source heat pump air conditioning system is being brought into play important effect with the advantage that it was had.During the heat supply in winter operation, cold-producing medium absorbs airborne heat at outdoor evaporimeter side panel, and inlet chamber inner condenser side provides heat or produces hot water after compressor compresses heats up again, and in general air source heat pump is a kind of comparatively energy-conservation winter heating mode.Air source heat pump also has the shortcoming of self; For example its comprehensive coefficient of performance is lower; When moving in the winter time, its heat capacity and coefficient of heat supply reduce with the reduction of outside air environment temperature, and the variation of environment temperature directly influences the economy and the stability of heat pump operation; Simultaneously, when ambient temperature is reduced to the air dew point temperature when following, the phenomenon that evaporator external just can frosting; When outdoor temperature is lower than-10 ℃; Because the frosting meeting causes the deterioration of heat exchange effect, used in defrost process " reverse cycle defrost " and " electrical heating defrosting " can be controlled the frosting phenomenon of evaporimeter, but this is a cost to consume a large amount of electric energy; Correlative study shows; In environment temperature is 0 ℃, and relative humidity is 70% o'clock, because the defrosting effect electric energy that consume can reach 12% of compressor power consumption more.Therefore, no matter to the building energy conservation or the stability of raising heat pump operation, design all has important and practical meanings to the air source heat pump system optimization in Properties.
Solar energy is a kind of inexhaustible clean energy resource, and during sunny in the winter time weather, the solar radiation that solar heat-collection plate is collected on average can reach 500 W/m
2More than, even the heat that is absorbed at the every square meter of rainy weather solar heat-collection plate also greater than 50W, therefore can be when effectively utilizing the collected low-grade solar energy of solar heat-collection plate to improve moving in the winter time of heat pump the problem of shortage of heat.
Solar heat pump is a kind of system that solar energy is combined heat pump united operation; Improve the temperature of low-temperature heat source in the environment through solar heat-collection plate; Thereby effectively improve the COP (Energy Efficiency Ratio) of system; And solar energy heat pump system can also be the heating form of a kind of economical operation, environmental protection as auxiliary hot water supply system.According to the connected mode of solar energy and heat pump, solar energy heat pump system is divided into forms such as train, parallel system and mixing connected system.These systems are direct-expansion type or the low or solar heat-collection plate of service efficiency in evening or the rainy weather that all exists of indirect expansion type absorbs the problem that shortage of heat causes the outer fin frosting of outdoor evaporator tube; Simultaneously; In view of the unsettled characteristics of solar energy self; The heat that solar heat-collection plate is collected is difficult to be complementary with the required heat of vaporizer side, and this causes the requirement of solar air source heat pumps system stable operation to receive continuous query.Solar heat-collection plate is when accepting solar radiation, and surfacing often passes through certain specially treated, makes material surface increase the solar radiative absorption ratio, and slin emissivity reduces; Simultaneously, the heat conduction and the convection action on solar heat-collection plate surface are also weakened, and the heat dissipation capacity under its night and the rainy weather reduces; The shortcoming of this type solar air source heat pumps is when its system's cisco unity malfunction under night and rainy weather environment; Opposite extreme situations is, the low-temperature low-pressure refrigerant in the outdoor evaporimeter constantly absorbs the heat in the solar energy water circulatory system, and absorbable shortage of heat in the solar heat-collection plate; Cause the internal working medium temperature constantly to reduce; Evaporator with heat pump can not absorb any heat from the solar energy water circulatory system, system's operation worsens, and also can cause serious harm to compressor.
Summary of the invention
Technical problem:The solar auxiliary air source heat pump device that the purpose of this invention is to provide a kind of Adaptive matching.This system is with heat pump techniques and flow and heat transfer technology is the basis; Not only can improve evaporimeter frosting outside air source heat pump winter operation efficient and the control room; And can carry out certain solution to the problem of evaporimeter heat absorption deficiency under regular solar heat pump night and the rainy weather and heat coupling difficulty; This system can also the additional feed domestic hot-water simultaneously, is a kind of environmental protection, energy-conservation heating form.
Technical scheme:The present invention is the solar auxiliary air source heat pump device of Adaptive matching.In the sunny cooperation solar energy water circulatory system on daytime, air source heat pump system and user side hot-water heating system; Through solar heat-collection plate recirculated water in the solar energy water circulatory system is heated; Pass through double-tube heat exchanger again with the outdoor evaporimeter in the heat transferred air source heat pump system; Improve the evaporating temperature of cold-producing medium, so effectively the frosting problem of vaporizer side outside the control room, the steam pressure raising of compressor suction place cold-producing medium simultaneously; And then the COP of lifting heat pump winter operation; Indoor condenser can be stored in unnecessary heat in the user side hot water storage tank, so as under the situation of night or rainy weather as indoor heating and domestic hot-water's auxiliary thermal source, reduce the heat burden of outdoor low-temperature heat source; And under night or rainy weather situation; Outside air temperature is lower; Close the solar energy water circulatory system; The user side hold over system is opened operation, can be used as auxiliary thermal source indoor a part of thermic load is provided, and a part of in addition heat can be born by heat pump; Heat in the outer ethylene glycol solution of refrigerant suction in this moment air source heat pump system in the evaporimeter; Heat in the environment passes to cold-producing medium through the thermal conduction resistance of thermal conduction resistance, ethylene glycol thermal conduction resistance and the interior pipe of double-tube heat exchanger surface resistance of heat transfer, shell, and the ethylene glycol solution in the solar energy water circulatory system is because the inhomogeneous of temperature can form free convection, the heat exchange effect of reinforcement sleeves heat exchanger to a certain extent.Native system belongs to the parallel system of a kind of non-direct-expansion type.
For solving the problems of the technologies described above, the invention provides a kind of solar auxiliary air source heat pump device of Adaptive matching, this system comprises cold-producing medium cycle subsystem, solar water cycle subsystem and user's hot water subsystem;
The cold-producing medium cycle subsystem is the core of whole system, the conversion of control ability and control transfer of heat; The cold-producing medium cycle subsystem comprises: compressor, indoor condenser, capillary, double-tube heat exchanger; Wherein, Indoor condenser refrigerant outlet is connected with import capillaceous; Capillary outlet is connected with the tube refrigerant import of double-tube heat exchanger, and the tube refrigerant outlet of double-tube heat exchanger is connected with the air inlet of compressor, the import of compressor air-discharging outlet junction chamber inner condenser;
The solar energy water cycle subsystem is used for collecting the solar energy in the environment, and solar energy is passed to the outdoor evaporimeter of heat pump, improves the evaporating temperature of cold-producing medium; The solar energy water cycle subsystem comprises: solar heat-collection plate, water circulating pump, double-tube heat exchanger, gate valve; Wherein, The delivery port of solar heat-collection plate connects the shell side working medium import of double-tube heat exchanger; The shell side sender property outlet of double-tube heat exchanger connects the import of gate valve, and the outlet of gate valve connects the import of water circulating pump, and the recirculated water delivery side of pump connects the water inlet of solar heat-collection plate;
User's hot water subsystem is used for store heat pumping system heat more than needed, the problem of adaptive regulation when the domestic hot-water being provided and realizing that outdoor solar energy does not meet the demands for the user; User's hot water subsystem comprises indoor condenser, valve, water pump, hot water storage tank; Wherein, The shell-side delivery port of indoor condenser connects the import of valve; The import of the outlet water pump of valve, the outlet of water pump is connected with the import of hot water storage tank, and the outlet of hot water storage tank connects the shell-side water inlet of indoor condenser.
Beneficial effect:The invention provides a kind of Adaptive matching device of solar auxiliary air source heat pump, utilize solar heat-collection plate to collect the heat of low-temperature heat source in the environment, be used to improve the evaporating temperature of vaporizer side, improve the heat pump operational efficiency in winter.
Cold-producing medium is walked in the pipe of double pipe heat exchanger in the heat pump; Manage that circulating of ethylene glycol solution constantly passes to cold-producing medium with the heat in the environment in the outer solar energy water circulatory system; The freezing point temperature of ethylene glycol is far below the air dew point temperature, effectively the frosting problem of vaporizer side outside the control room.
When system moves sunny in the winter time daytime; The user side hot water storage tank can store unnecessary heat; As the auxiliary thermal source under domestic hot-water and night or the rainy weather environment, can better solve heat that solar heat-collection plate collects with the required unmatched shortcoming of heat of heat pump operation vaporizer side with respect to traditional solar heat pump.
Description of drawings
Fig. 1 is the schematic diagram of the solar auxiliary air source heat pump system of Adaptive matching;
Fig. 2 is the double-tube heat exchanger combination.
Compressor 1, indoor condenser 2, capillary 3, double-tube heat exchanger 4, solar heat-collection plate 5, water circulating pump 6, gate valve 7, gate valve 8, water pump 9, user side hot water storage tank 10, refrigerant inlet 11, solar energy water circulatory system shell side sender property outlet 12, refrigerant outlet 13, solar energy water circulatory system shell side working medium import 14.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
The solar auxiliary air source heat pump device of Adaptive matching provided by the invention, this device comprise cold-producing medium cycle subsystem, solar water cycle subsystem and user's hot water subsystem;
The cold-producing medium cycle subsystem is the core of whole system, the conversion of control ability and control transfer of heat; The cold-producing medium cycle subsystem comprises: compressor 1, indoor condenser 2, capillary 3, double-tube heat exchanger 4; Wherein, Indoor condenser 2 refrigerant outlets are connected with the import of capillary 3; Capillary 3 outlets are connected with the tube refrigerant import 11 of double-tube heat exchanger 4; The tube refrigerant of double-tube heat exchanger 4 outlet 13 is connected the import of compressor 1 air exit junction chamber inner condenser 2 with the air inlet of compressor 1;
The solar energy water cycle subsystem is used for collecting the solar energy in the environment, and solar energy is passed to the outdoor evaporimeter of heat pump, improves the evaporating temperature of cold-producing medium; The solar energy water cycle subsystem comprises: solar heat-collection plate 5, water circulating pump 6, double-tube heat exchanger 4, gate valve 7; Wherein, The delivery port of solar heat-collection plate 5 connects the shell side working medium import 14 of double-tube heat exchanger 4; The shell side sender property outlet 12 of double-tube heat exchanger 4 connects the import of gate valve 7, and the outlet of gate valve 7 connects the import of water circulating pump 6, and the outlet of water circulating pump 6 connects the water inlet of solar heat-collection plate 5;
User's hot water subsystem is used for store heat pumping system heat more than needed, the problem of adaptive regulation when the domestic hot-water being provided and realizing that outdoor solar energy does not meet the demands for the user; User's hot water subsystem comprises indoor condenser 2, valve 8, water pump 9, hot water storage tank 10; Wherein, The shell-side delivery port of indoor condenser 2 connects the import of valve 8; The import of the outlet water pump 9 of valve 8, the outlet of water pump 9 is connected with the import of hot water storage tank 10, and the outlet of hot water storage tank 10 connects the shell-side water inlet of indoor condenser 2.
Fig. 1 is the Adaptive matching systematic schematic diagram of solar auxiliary air source heat pump; As shown in Figure 1, the solar auxiliary air source heat pump system and device comprises: compressor 1, indoor condenser 2, capillary 3, double-tube heat exchanger 4, solar heat-collection plate 5, water circulating pump 6, gate valve 7, user side hot water storage tank 10, water pump 9, gate valve 8.Wherein refrigerant circulation loop is composed in series by compressor 1, indoor condenser 2, capillary 3, double-tube heat exchanger 4 successively; The solar heat water circulation system is connected to form by double-tube heat exchanger 4, gate valve 7, water circulating pump 6, solar heat-collection plate 5 successively; User side hot-water return subsystem is composed in series by user side hot water storage tank 10, water pump 9, gate valve 8 successively.
Fig. 2 is the connection layout of the Adaptive matching system middle sleeve formula heat exchanger of solar auxiliary air source heat pump, and is as shown in Figure 2, comprising: refrigerant inlet 11, refrigerant outlet 13, solar energy water circulatory system working medium import 14, sender property outlet 12.
Cold-producing medium commonly used in the refrigerant circulation loop can be selected R22 (monochlorodifluoromethane), R23 (fluoroform), R134a (1,1,1, the 2-HFC-134a) etc., and working medium commonly used can be selected ethylene glycol, ethanol etc. in the solar heat water circulation system loop.
In the refrigerant circulation loop: the high-temperature high-pressure refrigerant that comes out from compressor 1 carries out heat exchange through indoor condenser 2; Can select directly to add hot-air or carry out heat exchange with the water in the hot water storage tank; Cold-producing medium becomes liquid state by gaseous state under isobaric condition; Being in cold-producing medium saturated or that be in supercooled state gets into capillary 3 and becomes liquid-vapor mixture through behind the adiabatic throttlings; Evaporate behind the heat of the outer working medium of the inboard absorption tube of pipe of the double pipe heat exchanger 4 of cold-producing medium inflow afterwards, suck the refrigerant gas of low-temp low-pressure again by compressor, accomplish and circulate;
In the solar heat water-flow circuit: sunny daytime in winter; Ethylene glycol working medium is after the double pipe heat exchanger 4 pipe outsides are with the heat transferred cold-producing medium;, gate valve 7 and water circulating pump 6 get into solar heat-collection plate 5 after improving pressure; Get into double pipe heat exchanger continuation and cold-producing medium working medium behind the solar energy in solar heat-collection plate in the absorbing environmental and carry out heat exchange, accomplish circulation; Rainy weather or night: close the solar energy water circulatory system, this moment, the vaporizer side heat conduction of heat pump belonged to the Adaptive matching form, air source heat pump system work;
In the user side hot water circulation loop: on sunny daytime; Operation is opened by system, and the water in the hot water storage tank 10 is taken away heat storage unnecessary in the system through the user side condenser; Through behind valve 8 and the water pump 9 heat being stored in the hot water storage tank, can be used as domestic hot-water's auxiliary thermal source; When rainy weather or night, system passes to indoor condenser again with the heat in the water tank, reduces the thermic load of outdoor evaporimeter, the hot matching problem of optimization system.
The above is merely preferred embodiments of the present invention; Protection scope of the present invention is not exceeded with above-mentioned embodiment; As long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (1)
1. the solar auxiliary air source heat pump device of an Adaptive matching, it is characterized in that: this device comprises cold-producing medium cycle subsystem, solar water cycle subsystem and user's hot water subsystem;
The cold-producing medium cycle subsystem is the core of whole system, the conversion of control ability and control transfer of heat; The cold-producing medium cycle subsystem comprises: compressor (1), indoor condenser (2), capillary (3), double-tube heat exchanger (4); Wherein, Indoor condenser (2) refrigerant outlet is connected with the import of capillary (3); Capillary (3) outlet is connected with the tube refrigerant import (11) of double-tube heat exchanger (4); The tube refrigerant outlet (13) of double-tube heat exchanger (4) is connected the import of compressor (1) air exit junction chamber inner condenser (2) with the air inlet of compressor (1);
The solar energy water cycle subsystem is used for collecting the solar energy in the environment, and solar energy is passed to the outdoor evaporimeter of heat pump, improves the evaporating temperature of cold-producing medium; The solar energy water cycle subsystem comprises: solar heat-collection plate (5), water circulating pump (6), double-tube heat exchanger (4), gate valve (7); Wherein, The delivery port of solar heat-collection plate (5) connects the shell side working medium import (14) of double-tube heat exchanger (4); The shell side sender property outlet (12) of double-tube heat exchanger (4) connects the import of gate valve (7); The outlet of gate valve (7) connects the import of water circulating pump (6), and the outlet of water circulating pump (6) connects the water inlet of solar heat-collection plate (5);
User's hot water subsystem is used for store heat pumping system heat more than needed, the problem of adaptive regulation when the domestic hot-water being provided and realizing that outdoor solar energy does not meet the demands for the user; User's hot water subsystem comprises indoor condenser (2), valve (8), water pump (9), hot water storage tank (10); Wherein, The shell-side delivery port of indoor condenser (2) connects the import of valve (8); The import of the outlet water pump (9) of valve (8), the outlet of water pump (9) is connected with the import of hot water storage tank (10), and the outlet of hot water storage tank (10) connects the shell-side water inlet of indoor condenser (2).
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| CN104515303A (en) * | 2014-12-15 | 2015-04-15 | 广西吉宽太阳能设备有限公司 | Water circulating working medium type heat-pump water heater |
| CN104596008A (en) * | 2015-01-23 | 2015-05-06 | 黄国和 | All-weather solar heat pump air-conditioning system |
| CN104729867A (en) * | 2015-02-10 | 2015-06-24 | 合肥华凌股份有限公司 | Experiment system used for refrigeration matching of refrigerator and matching method using same |
| CN105402966A (en) * | 2015-12-31 | 2016-03-16 | 清华大学 | Solar energy-based air source heat pump |
| CN105605648A (en) * | 2016-02-25 | 2016-05-25 | 山东科灵节能装备股份有限公司 | Air energy heat pump unit capable of absorbing solar energy in all weathers |
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| CN104515303A (en) * | 2014-12-15 | 2015-04-15 | 广西吉宽太阳能设备有限公司 | Water circulating working medium type heat-pump water heater |
| CN104596008A (en) * | 2015-01-23 | 2015-05-06 | 黄国和 | All-weather solar heat pump air-conditioning system |
| CN104596008B (en) * | 2015-01-23 | 2017-02-22 | 黄国和 | All-weather solar heat pump air-conditioning system |
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| CN105402966B (en) * | 2015-12-31 | 2018-05-11 | 清华大学 | A kind of solar air source heat pumps |
| CN105402966A (en) * | 2015-12-31 | 2016-03-16 | 清华大学 | Solar energy-based air source heat pump |
| CN105605648A (en) * | 2016-02-25 | 2016-05-25 | 山东科灵节能装备股份有限公司 | Air energy heat pump unit capable of absorbing solar energy in all weathers |
| CN105650943A (en) * | 2016-03-31 | 2016-06-08 | 天津众石睿哲科技有限责任公司 | Phase-change heat storage type carbon dioxide air source solar-assisted heat pump |
| CN107883608A (en) * | 2017-12-06 | 2018-04-06 | 北京京诚科林环保科技有限公司 | Solar air source heat pump unit |
| CN107975900A (en) * | 2017-12-22 | 2018-05-01 | 山东飞龙制冷设备有限公司 | A kind of indirect expansion type heat supply and water system for household |
| CN110006086A (en) * | 2018-01-05 | 2019-07-12 | 齐鲁工业大学 | A kind of New Evaporator heating system of combination solar energy optical-thermal and air energy |
| 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 |
| CN109489305A (en) * | 2018-12-29 | 2019-03-19 | 于月洋 | A kind of heat pump air conditioner heating system |
| CN110686426A (en) * | 2019-08-27 | 2020-01-14 | 保定流云精密机械制造有限公司 | But waste heat recovery's photovoltaic air source heat pump |
| CN111998430A (en) * | 2020-09-10 | 2020-11-27 | 清华大学 | Self-defrosting air source heat pump unit and operation method thereof |
| CN111998430B (en) * | 2020-09-10 | 2024-04-23 | 清华大学 | Self-defrosting air source heat pump unit and operation method thereof |
| CN112728630A (en) * | 2020-12-29 | 2021-04-30 | 哈尔滨工业大学 | Integrated heat supply system and heat supply method |
| CN113266870A (en) * | 2021-04-07 | 2021-08-17 | 安徽建筑大学 | Household air conditioning system based on solar heat pump technology |
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