Summary of the invention
In order to solve the deficiencies in the prior art, the object of the present invention is to provide a kind of high/low temperature phase-change heat-storage power supply devicesAnd control method, realize hot wind supply, the hot water of annual efficient stable.
To achieve the goals above, the technical solution of the present invention is as follows:
First aspect provides a kind of high/low temperature phase-change heat-storage power supply device, by compressor, level-one throttle valve, second level sectionFlow valve, evaporator, solar thermal collector, condenser, buffering heat storage tank composition；
The solar thermal collector is made of shell, evaporation coil, solar heat-collection plate, and the evaporation coil is arranged in tooIt is positive can be on collecting plate, shell is divided into phase-transition heat-storage chamber and heat exchanging chamber by the solar heat-collection plate, in heat exchanging chamber with solar energy collectionThe opposite shell of hot plate is transparent material, and heat exchanging chamber opens up heat exchange import and heat exchange outlet, and the intracavitary filling of phase-transition heat-storage is lowWarm phase change heat storage material；The condenser setting is equipped with high-temperature phase change heat accumulation in buffering heat storage tank in the buffering heat storage tankMaterial；
Compressor outlet is sequentially connected condenser, level-one throttle valve, and the outlet of first throttle valve is equipped with two pipelines, theOne pipeline outlet connect compressor air inlet, the first pipeline are successively arranged two-step throttle valve and evaporation according to refrigerant flow directionDevice, the second pipeline outlet connect the evaporation coil import of solar thermal collector, and the evaporation coil of solar thermal collector exports connectionCompressor inlet；Solar thermal collector heat exchange outlet and buffering heat storage tank outlet be used to connection energize end intoMouthful, the heat exchange import of solar thermal collector and the import of buffering heat storage tank are used to the outlet that connection energizes end, the second pipeline,The heat exchange outlet of solar thermal collector and the outlet of buffering heat storage tank are respectively mounted valve.
Second aspect provides a kind of application of above-mentioned power supply device in heating field or drying field.
The third aspect provides a kind of energy supply method using above-mentioned power supply device, and solar thermal collector passes through solar energy collectionHot plate converts solar energy into thermal energy, and a part of thermal energy is absorbed by low-temperature phase-change material to be stored, and another part is used for heating evaporationThe heat transferring medium in refrigerant or heat exchanging chamber in coil pipe；
When the temperature of the surroundings is low, refrigerant is divided into two parts after level-one throttle valve carries out level-one reducing pressure by regulating flow, and onePart enters evaporator after two-step throttle valve carries out two-step throttle decompression and absorbs heat, and the refrigerant after heat absorption enters compressionMachine, another part enter compressor after entering solar thermal collector heat absorption, and the refrigerant after being compressed by the compressor enters condenser,Refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, while being carried out using high-temperature phase change heat accumulation materialEnergy storage, buffer heat storage tank in heat transferring medium be delivered to after refrigerant heat energy supply end energized；
When environment temperature is higher, refrigerant successively passes through level-one throttle valve, two-step throttle valve carries out two-stage reducing pressure by regulating flow,Refrigerant after two-stage reducing pressure by regulating flow enters evaporator and absorbs heat, and the refrigerant after heat absorption enters compressor, by compressor pressureRefrigerant after contracting enters condenser, and refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, simultaneouslyEnergy storage, the interior heat transferring medium and solar energy heating after refrigerant heat of buffering heat storage tank are carried out using high-temperature phase change heat accumulation materialThe heat transferring medium being heated in device is delivered to energy supply end together and is energized.
Fourth aspect provides a kind of control method of above-mentioned power supply device, when environment temperature is higher, closes the second pipeThe valve of line opens the valve of the outlet of the valve and buffering heat storage tank of the heat exchange outlet of solar thermal collector, and refrigerant is successivelyCarry out two-stage reducing pressure by regulating flow by level-one throttle valve, two-step throttle valve, the refrigerant after two-stage reducing pressure by regulating flow enter evaporator intoRow heat absorption, the refrigerant after heat absorption enter compressor, and the refrigerant after being compressed by the compressor enters condenser, and refrigerant is condensingIt exchanges heat in device with the heat transferring medium in buffering heat storage tank, while carrying out energy storage using high-temperature phase change heat accumulation material, buffering storesHeat transferring medium in hot tank after refrigerant heat is delivered to energy supply together with the heat transferring medium being heated in solar thermal collectorEnd is energized；
When the temperature of the surroundings is low, the valve for closing the heat exchange outlet of solar thermal collector, opens the valve of the second pipelineWith the valve of the outlet of buffering heat storage tank, refrigerant is divided into two parts after level-one throttle valve carries out level-one reducing pressure by regulating flow, and onePart enters evaporator after two-step throttle valve carries out two-step throttle decompression and absorbs heat, and the refrigerant after heat absorption enters compressionMachine, another part enter compressor after entering solar thermal collector heat absorption, and the refrigerant after being compressed by the compressor enters condenser,Refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, while being carried out using high-temperature phase change heat accumulation materialEnergy storage, buffer heat storage tank in heat transferring medium be delivered to after refrigerant heat energy supply end energized.
The invention has the benefit that
1. the present invention adds high-temperature phase change heat accumulation material in buffering heat storage tank, the heat accumulation of buffer tank can effectively improveAbility reduces the temperature fluctuation of system heat supply；Simultaneously because increasing heat storage capacity, the buffering under same case can also be reducedThe volume of water tank, to reduce the heat loss and project cost of water tank.
2. refrigerant can be divided into two kinds of evaporating temperatures, in Jie of two kinds of temperature by the way of two-step throttle by the present inventionDraw heat in matter (surrounding air and solar thermal collector), and the stream of two paths can be controlled by the valve in pipelineAmount improves the thermal stability under low temperature environment so that the various operating conditions of flexible adaptation, realize the effect of system air injection enthalpy-increasing.
3. there are three function, the auxiliary evaporator of heat pump system, solar thermal collectors for solar thermal collector tool of the inventionWith low temperature phase change accumulation of heat, it is passed through in auxiliary evaporator after accumulation of heat can be can be carried out using the sun when solar energy is stronger.It can at nightThe refrigerant evaporating temperature in auxiliary evaporator is improved using the heat of storage on daytime, improves heat pump system COP.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the disclosure.Unless anotherIt indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical fieldThe identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted rootAccording to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singularAlso it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packetInclude " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Heat transferring medium described in the disclosure is air or water.
Valve described in the disclosure is the adjustable valve of aperture, such as cage ball valve, rotation ball-cock assembly, eccentric valve, butterflyValve etc..
For air source heat pump biggish deficiency affected by environment, the present disclosure proposes a kind of confessions of high/low temperature phase-change heat-storageIt can device and control method.
A kind of exemplary embodiment of the disclosure provides a kind of high/low temperature phase-change heat-storage power supply device, by compressor,Level-one throttle valve, two-step throttle valve, evaporator, solar thermal collector, condenser, buffering heat storage tank composition；
The solar thermal collector is made of shell, evaporation coil, solar heat-collection plate, and the evaporation coil is arranged in tooIt is positive can be on collecting plate, shell is divided into phase-transition heat-storage chamber and heat exchanging chamber by the solar heat-collection plate, in heat exchanging chamber, with solar energy collectionThe opposite shell of hot plate is transparent material, and heat exchanging chamber opens up heat exchange import and heat exchange outlet, and the intracavitary filling of phase-transition heat-storage is lowWarm phase change heat storage material, such as paraffin class heat accumulating；The condenser setting is in buffering heat storage tank, the buffering heat storage tankIt is interior to be equipped with high-temperature phase change heat accumulation material, such as fatty acid, crystalline hydrate salt, wherein crystalline hydrate salt such as, Fe (NO3)2·6H2O、Na2B4O7·10H2O、Na2PO4·12H2O、AlK(SO4)2·12H2O etc.；
Compressor outlet is sequentially connected condenser, level-one throttle valve, and the outlet of first throttle valve is equipped with two pipelines, theOne pipeline outlet connect compressor air inlet, the first pipeline are successively arranged two-step throttle valve and evaporation according to refrigerant flow directionDevice, the second pipeline outlet connect the evaporation coil import of solar thermal collector, and the evaporation coil of solar thermal collector exports connectionCompressor inlet；Solar thermal collector heat exchange outlet and buffering heat storage tank outlet be used to connection energize end intoMouthful, the heat exchange import of solar thermal collector and the import of buffering heat storage tank are used to the outlet that connection energizes end, the second pipeline,The heat exchange outlet of solar thermal collector and the outlet of buffering heat storage tank are respectively mounted valve.
In one or more embodiments of the embodiment, the shell of the solar thermal collector is equipped with insulating layer.It preventsAbility is scattered and disappeared with the situation of heat radiation.
In one or more embodiments of the embodiment, several finned tubes, high-temperature-phase are equipped in the buffering heat storage tankChange heat storage material is filled to finned tube.Increase high temperature phase change material (pcm) and buffer the heat-transfer surface area of heat transferring medium in heat storage tank,Enhance high temperature phase change material (pcm) heat absorption rate of heat release.
In one or more embodiments of the embodiment, the evaporator is equipped with air-introduced machine.It can be by more environmentAir delivery provides more energy to evaporator for the refrigerant in evaporator.
In one or more embodiments of the embodiment, the heat exchange outlet of solar thermal collector is equipped with the pump housing or blower.Power is provided for the heat transferring medium in solar thermal collector heat exchanging chamber.
The another embodiment of the disclosure provides a kind of application of above-mentioned power supply device in heating field.
Embodiment there is provided a kind of energy supply method using above-mentioned power supply device, solar energy collection for the third of the disclosureHot device converts solar energy into thermal energy by solar heat-collection plate, and a part of thermal energy is absorbed by low-temperature phase-change material to be stored, anotherPart is for the heat transferring medium in the refrigerant or heat exchanging chamber in heating evaporation coil pipe；
When the temperature of the surroundings is low, refrigerant is divided into two parts after level-one throttle valve carries out level-one reducing pressure by regulating flow, and onePart enters evaporator after two-step throttle valve carries out two-step throttle decompression and absorbs heat, and the refrigerant after heat absorption enters compressionMachine, another part enter compressor after entering solar thermal collector heat absorption, and the refrigerant after being compressed by the compressor enters condenser,Refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, while being carried out using high-temperature phase change heat accumulation materialEnergy storage, buffer heat storage tank in heat transferring medium be delivered to after refrigerant heat energy supply end energized；
When environment temperature is higher, refrigerant successively passes through level-one throttle valve, two-step throttle valve carries out two-stage reducing pressure by regulating flow,Refrigerant after two-stage reducing pressure by regulating flow enters evaporator and absorbs heat, and the refrigerant after heat absorption enters compressor, by compressor pressureRefrigerant after contracting enters condenser, and refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, simultaneouslyEnergy storage, the interior heat transferring medium and solar energy heating after refrigerant heat of buffering heat storage tank are carried out using high-temperature phase change heat accumulation materialThe heat transferring medium being heated in device is delivered to energy supply end together and is energized.
In one or more embodiments of the embodiment, when there is no the sun to provide energy for solar thermal collector, phaseBecome the energy of the material for storing heat of phase change in low temperature release savings in thermal.
The third of the disclosure embodiment there is provided a kind of control method of above-mentioned power supply device, when environment temperature compared withGao Shi closes the valve of the second pipeline, opens the outlet of the valve and buffering heat storage tank of the heat exchange outlet of solar thermal collectorValve, refrigerant successively passes through level-one throttle valve, two-step throttle valve carries out two-stage reducing pressure by regulating flow, the refrigeration after two-stage reducing pressure by regulating flowAgent enters evaporator and absorbs heat, and the refrigerant after heat absorption enters compressor, and the refrigerant after being compressed by the compressor enters condensationDevice, refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, while utilizing high-temperature phase change heat accumulation materialCarry out energy storage, the heat transferring medium being heated in the interior heat transferring medium and solar thermal collector after refrigerant heat of buffering heat storage tankEnergy supply end is delivered to together to be energized；
When the temperature of the surroundings is low, the valve for closing the heat exchange outlet of solar thermal collector, opens the valve of the second pipelineWith the valve of the outlet of buffering heat storage tank, refrigerant is divided into two parts after level-one throttle valve carries out level-one reducing pressure by regulating flow, and onePart enters evaporator after two-step throttle valve carries out two-step throttle decompression and absorbs heat, and the refrigerant after heat absorption enters compressionMachine, another part enter compressor after entering solar thermal collector heat absorption, and the refrigerant after being compressed by the compressor enters condenser,Refrigerant exchanges heat with the heat transferring medium in buffering heat storage tank within the condenser, while being carried out using high-temperature phase change heat accumulation materialEnergy storage, buffer heat storage tank in heat transferring medium be delivered to after refrigerant heat energy supply end energized.
In one or more embodiments of the embodiment, the aperture of the valve by controlling the second pipeline, to control theThe flow-rate ratio of one pipeline inner refrigerant and the second pipeline inner refrigerant.The stream of two paths is controlled by the valve in pipelineAmount ratio, the further various operating conditions of flexible adaptation, thus the thermal stability under further increasing low temperature environment.
In order to enable those skilled in the art can clearly understand the technical solution of the disclosure, below with reference to toolThe technical solution of the disclosure is described in detail in the embodiment of body.
A kind of high/low temperature phase-change heat-storage power supply device, as shown in Figure 1, by compressor 1, level-one throttle valve 2, two-step throttleValve 3, evaporator 4, solar thermal collector 5, water pump 6, condenser 7, buffering heat storage tank 9 form.
For buffering heat storage tank 9 as shown in Fig. 2, the setting of condenser 7 is in buffering heat storage tank 9, buffering heat storage tank 9 is interior equipped with severalFinned tube 8, filled high-temperature phase-change heat-storage material in finned tube 8.
Solar thermal collector 5, as shown in figure 3, being made of shell, evaporation coil 11, solar heat-collection plate 13, evaporation coil11 are arranged on solar heat-collection plate 13, and shell is divided into phase-transition heat-storage chamber 14 and heat exchanging chamber 16, shell by solar heat-collection plate 13Insulation layer 15 covers, and the shell opposite with solar heat-collection plate 13 is transparent cover plate 12 in heat exchanging chamber 16, and heat exchanging chamber 16 opens upExchange heat import and heat exchange outlet, fills material for storing heat of phase change in low temperature in phase-transition heat-storage chamber 14.
1 gas outlet of compressor is sequentially connected condenser 7, level-one throttle valve 2, and the outlet of first throttle valve 2 is equipped with two pipesLine, 1 air inlet of the first pipeline outlet connect compressor, the first pipeline are successively arranged two-step throttle valve according to refrigerant flow direction3 and evaporator 4, the second pipeline outlet connects 11 import of evaporation coil of solar thermal collector 5, the evaporation of solar thermal collector 5Coil pipe 11 exports 1 air inlet of connect compressor；The heat exchange outlet of solar thermal collector 5 and the outlet of buffering heat storage tank 9 are all connected withThe import of 10 ends is energized, the heat exchange import of solar thermal collector 5 and the import of buffering heat storage tank 9 are all connected with energy supply end 10First valve S1, second are installed the heat exchange outlet of outlet, the outlet, the second pipeline and solar thermal collector that buffer heat storage tank respectivelyValve S2, third valve S3.
Summer process: closing the second valve S2, the first valve S1, third valve S3 is opened, at this point, composite evaporation device is not joinedIt works with system, which belongs to conventional solar energy composite heat pump system, and solar thermal collector 5 and conventional heat pump system are producedRaw heat introduces energy supply end 10, and solar thermal collector heat is transported to energy supply end 10 by water pump 6, as needed for mentioningSupplying hot water.
Daytime in winter process: close third valve S3, open the first valve S1, the second valve S2.It is good in irradiation on daytimeUnder conditions of, the hot water that the refrigerant for the high-temperature gas being discharged through compressor 1 enters in condenser 7 with buffering heat storage tank 9 exchanges heat,Hot water is transferred heat to, heat is stored in the high-temperature phase change heat accumulation material in finned tube 8, and refrigerant enters level-one section laterAfter flowing the progress reducing pressure by regulating flow of valve 2, two-way is divided to carry out later, enters evaporation after two-step throttle valve 3 carries out second throttle all the wayDevice 4 absorbs the heat in environment；Another way enters solar thermal collector 5 by the second valve S2 and absorbs the production of solar heat-collection plate 13Raw heat；Last two-way gas mixes at compressor 1 and carries out gas compression, realizes the air injection enthalpy-increasing effect of system.WhenSolar radiation can suitably reduce the aperture of the second valve S2 when lower, so that refrigeration system is absorbed the heat in environment more, work as weatherSunny radiation condition can increase the aperture of the second valve S2 when preferable, refrigeration system is made to absorb the heat of solar thermal collector 5 more.
Night in winter process: closing third valve S3, opens the first valve S1, the second valve S2.It is good in irradiation on daytimeUnder conditions of, the hot water that the refrigerant for the high-temperature gas being discharged through compressor 1 enters in condenser 7 with buffering heat storage tank 9 exchanges heat,Hot water is transferred heat to, after refrigerant enters the progress reducing pressure by regulating flow of level-one throttle valve 2 later, divides two-way to carry out later, all the wayEnter the heat in the absorption environment of evaporator 4 after two-step throttle valve 3 carries out second throttle；Another way passes through the second valve S2It is absorbed into solar thermal collector 5 and is stored in the heat in material for storing heat of phase change in low temperature on 13 daytime of solar heat-collection plate；Last twoRoad gas mixes at compressor 1 and carries out gas compression, realizes the air injection enthalpy-increasing effect of system.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this fieldFor art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repairChange, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.