CN102778070A - Absorption-type refrigerating system and method - Google Patents
Absorption-type refrigerating system and method Download PDFInfo
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- CN102778070A CN102778070A CN2012101763701A CN201210176370A CN102778070A CN 102778070 A CN102778070 A CN 102778070A CN 2012101763701 A CN2012101763701 A CN 2012101763701A CN 201210176370 A CN201210176370 A CN 201210176370A CN 102778070 A CN102778070 A CN 102778070A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The invention discloses an absorption-type refrigerating system and method. The system comprises a first heat supply device, a second heat supply device, an absorption-type refrigerating device and a control device, wherein the control device is used for controlling and exchanging the first heat supply device to supply heat for a generator of the absorption-type refrigerating device through a first heat supply pipeline, or is used for controlling and exchanging the second heat supply device to supply heat for the absorption-type refrigerating device through a second heat supply pipeline; and an evaporator of the absorption-type refrigerating device is used for outputting refrigeration capacity to refrigerate. Besides a traditional direct-combustion-type heat supply device, a heat pump device can be adopted for supplying heat for the generator of the absorption-type refrigerating device, so that the absorption-type refrigerating device can be suitable for multiple occasions; and when the heat pump device is adopted for supplying heat for the generator of the absorption-type refrigerating device, heat flowing out of cooling water of the absorption-type refrigerating device can be recycled, thereby achieving the aim of saving energy sources further.
Description
Technical field
The present invention relates to power-saving technology, relate in particular to a kind of system that reclaims, utilizes Absorption Refrigerator to freeze waste heat.
Background technology
The significantly raising of Along with people's living standard; Air-conditioner becomes the indispensable household electrical appliance of family gradually, uses traditional refrigeration modes on a large scale, causes the refrigeration demand of annual conventional high energy consumption to take the ratio that State Grid consumes and increases sharply; Cause power tense; Particularly the region following the line of the sea is because electric power in short supply, and the power failure phenomenon is serious, and it is very general to draw electricity to ration the power supply.
Therefore, utilize the mode that other energy freezes then more and more to come into one's own.Absorption Refrigerator directly drives with heat energy, and it is few to have a power consumption, and therefore the advantage that low-grade solar energy capable of using, waste heat and used heat freeze, obtained application more and more widely in recent years.The miniaturization Absorption Refrigerator has better market prospects in buildings such as villa, office, dwelling house.
As shown in Figure 1, the operation principle of Absorption Refrigerator is: absorption type refrigerating unit comprises: generator, condenser, evaporimeter, absorber.In generator,, the cold-producing medium in the solution is separated out, become gaseous refrigerant through heated solution; Gaseous refrigerant is condensed into liquid refrigerant in condenser, the heat that discharges in this process water band that is cooled; The evaporimeter that liquid refrigerant enters into low pressure becomes gaseous refrigerant, absorbs heat in this process, thereby reaches the refrigeration purpose; Low pressure, gaseous refrigerant enters into absorber, the concentrated solution of having separated out cold-producing medium in the generator is transferred in the absorber spray and goes out, thereby has absorbed the gaseous refrigerant in the absorber, feeds back in the generator after forming weak solution again.
Yet the Absorption Refrigerator of prior art is in the process of constantly freezing, and the heat that cooling water is taken out of is not fully utilized, and causes energy waste; In addition, under the situation that not lasting heat energy provides, Absorption Refrigerator then can't be worked, and makes the use of Absorption Refrigerator be restricted.
Summary of the invention
The embodiment of the invention provides a kind of improved absorption system and refrigerating method thereof, reclaims heat energy and electric energy and fuel combustion heat energy refrigeration system absorption refrigeration, energy-conservation, reduction of discharging type of carrying out as the energy mix supply in order to a kind of the employing to be provided.
According to an aspect of the present invention, a kind of absorption system is provided, has comprised: first heating plant, second heating plant, first heat supply pipeline, second heat supply pipeline, absorption type refrigerating unit and control device;
Valve in said control device and first heat supply pipeline and the valve in second heat supply pipeline are electrically connected; Be used to control the valve opening of first heat supply pipeline; The valve closing of second heat supply pipeline, thus control switching first heating plant is the generator heat supply of said absorption type refrigerating unit through first heat supply pipeline; Perhaps, control the valve closing of second heat supply pipeline, the valve opening of first heat supply pipeline, thus control switching second heating plant is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline;
The evaporimeter of said absorption type refrigerating unit is used to export cold.
Wherein, said absorption type refrigerating unit also comprises: condenser, absorber, cooling water circulating line; And,
Solution absorption in the generator of said absorption type refrigerating unit behind the heat that discharges of said direct-fired heating plant or heat pump assembly, the cold-producing medium in the solution is separated out, and becomes gaseous refrigerant;
Gaseous refrigerant gets in the condenser of said absorption type refrigerating unit and is condensed into liquid refrigerant, and the heat that discharges in this process water that is cooled is taken away;
The evaporimeter that said liquid refrigerant enters into the said absorption type refrigerating unit of low pressure becomes low pressure, gaseous refrigerant, freezes in this process: absorb heat, output cold;
Said low pressure, gaseous refrigerant enter into the absorber of said absorption type refrigerating unit; The concentrated solution of having separated out cold-producing medium in the generator of said absorption type refrigerating unit is transferred to spray in the absorber of said absorption type refrigerating unit and goes out; Thereby absorbed low pressure, gaseous refrigerant in the absorber of said absorption type refrigerating unit, be back to again in the generator of said absorption type refrigerating unit after forming weak solution; Forming the heat that is produced in the weak solution process water that is cooled in the absorber of said absorption type refrigerating unit takes away;
Said cooling water flows into from the cooling water circulating line import of said absorption type refrigerating unit, and the cooling water that has absorbed heat in the condenser of said absorption type refrigerating unit and the absorber of absorption type refrigerating unit flows out from the cooling water circulating line outlet of said absorption type refrigerating unit.
Said first heating plant is direct-fired heating plant or the heating plant that utilizes solar energy; Said second heating plant is a heat pump assembly.
Said heat pump assembly comprises the first heat exchange pond, the second heat exchange pond, evaporimeter, condenser;
The cooling water circulating line outlet of said absorption type refrigerating unit links to each other through pipeline with the water inlet in the first heat exchange pond, and the cooling water circulating line import of said absorption type refrigerating unit links to each other through pipeline with the delivery port in the first heat exchange pond;
The evaporimeter of said heat pump assembly is arranged in the first heat exchange pond, is used for absorbing the heat of cooling water in the first heat exchange pond of flowing through;
The delivery port in the second heat exchange pond links to each other through pipeline with the water inlet of second heat supply pipeline, and the inlet port in the second heat exchange pond links to each other through pipeline with the delivery port of second heat supply pipeline;
The condenser of said heat pump assembly is arranged in the second heat exchange pond, is used for the medium release heat to the second heat exchange pond of flowing through.
Said heat pump assembly also comprises: compressor, choke valve, cold-producing medium circulating line; The compressor of said heat pump assembly, condenser, choke valve, evaporimeter join end to end through said cold-producing medium circulating line successively, constitute the circulation canal of the heat pump assembly cold-producing medium of sealing;
Said compressor is used for said heat pump assembly pressurizes refrigerant, makes the heat pump assembly cold-producing medium become the condenser that gets into said heat pump assembly behind the gaseous state of HTHP;
The condenser of said heat pump assembly specifically is used for the said heat pump assembly cold-producing medium of condensation liquefaction, makes said heat pump assembly cold-producing medium become liquid, and the heat that said heat pump assembly cold-producing medium is discharged is discharged in the second heat exchange pond;
The choke valve of said heat pump assembly is used for the heat pump assembly cold-producing medium that the condenser from said heat pump assembly flows out is reduced pressure, and makes said heat pump assembly cold-producing medium become low-temp low-pressure liquid;
The evaporation apparatus body of said heat pump assembly is used for absorbing the heat of the cooling water that flows through from the first heat exchange pond.
Medium in the said second heat exchange pond specifically can be water, conduction oil, air.
According to another aspect of the present invention, a kind of absorption-type refrigerating method is provided, has comprised:
Control device is controlled the valve opening of first heat supply pipeline, the valve closing of second heat supply pipeline, thus control switching first heating plant is the generator heat supply of absorption type refrigerating unit through first heat supply pipeline; Perhaps, control the valve closing of second heat supply pipeline, the valve opening of first heat supply pipeline, thus control switching second heating plant is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline;
The evaporimeter output cold refrigeration of said absorption type refrigerating unit.
Said first heating plant is direct-fired heating plant.
Said second heating plant is a heat pump assembly; And,
Control the valve closing of second heat supply pipeline at said control device, the valve opening of first heat supply pipeline, thus when control was switched second heating plant and is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline, said method also comprised:
Be arranged at the evaporimeter of the said heat pump assembly in the first heat exchange pond of said heat pump assembly, absorb the heat of the cooling water in the first heat exchange pond of flowing through; Said cooling water is that the cooling water circulating line outlet from said absorption type refrigerating unit, the water inlet in the first heat exchange pond flow into the first heat exchange pond; And said cooling water is the cooling of condenser in the said absorption type refrigerating unit and absorber from the back cooling water circulating line import inflow from said absorption type refrigerating unit of the delivery port outflow in the first heat exchange pond;
Be arranged at the condenser of the said heat pump assembly in the second heat exchange pond of said heat pump assembly, the medium release heat in the second heat exchange pond of flowing through; Said medium is the inlet port inflow from the delivery port of second heat supply pipeline, the second heat exchange pond; And said medium is the generator heat supply of said absorption type refrigerating unit from the back water inlet inflow from second heat supply pipeline of the delivery port outflow in the second heat exchange pond.
Said medium specifically can be water, conduction oil, air.
The absorption system of the embodiment of the invention is owing to be that the generator of absorption type refrigerating unit carries out heat supply except adopting traditional direct-fired heating plant; Can also adopt the heat pump assembly that can utilize recovery waste heat to carry out heat supply for the generator of absorption type refrigerating unit; Thereby both can adopt heat energy also can adopt electric energy to carry out absorption refrigeration; Make Absorption Refrigerator go for more conditions, be more convenient for absorption system user's use.
And; Adopting heat pump assembly is that the generator of absorption type refrigerating unit is when carrying out heat supply; Can recycle the heat in the cooling water that from absorption type refrigerating unit, flows out; The cooling water that has reduced temperature is re-entered in the absorption type refrigerating unit, thereby reclaimed waste heat, reach the purpose of further energy savings.
Description of drawings
Fig. 1 is the Absorption Refrigerator operation principle sketch map of prior art;
Fig. 2 is the absorption system cut-away view of the embodiment of the invention;
Fig. 3 is the cut-away view of second heating plant of the embodiment of the invention;
Fig. 4 is the circulation sketch map of the second heat exchange pond medium of the embodiment of the invention;
Fig. 5 is the circulation sketch map of the cooling water of the embodiment of the invention.
The specific embodiment
The absorption system that the embodiment of the invention provides, as shown in Figure 2, comprising: absorption type refrigerating unit 201, first heating plant 202, second heating plant 203, control device 204.
Wherein, first heating plant 202 can be direct-fired heating plant, like furnace gas kitchen range, boiler etc., also can be the heating plant that utilizes solar energy.First heating plant 202 is that the generator of absorption type refrigerating unit 201 carries out heat supply through first heat supply pipeline.Has mobile medium in first heat supply pipeline, like air, water or heat conduction wet goods, in order to heat is transferred to the generator of absorption type refrigerating unit 201.
The structure and the operation principle of the absorption type refrigerating unit of the prior art of introducing among absorption type refrigerating unit 201 and above-mentioned Fig. 1 are the same.Comprise in the absorption type refrigerating unit 201: generator, condenser, evaporimeter, absorber.
Solution absorption in the generator of absorption type refrigerating unit 201 behind the heat that discharges of first heating plant 202 or second heating plant 203, the cold-producing medium in the solution is separated out, and becomes gaseous refrigerant.
The generator of absorption type refrigerating unit 201 links to each other through pipeline with the condenser of absorption type refrigerating unit 201; Gaseous refrigerant in the generator of absorption type refrigerating unit 201 gets into through pipeline in the condenser of absorption type refrigerating unit 201 and is condensed into liquid refrigerant, and the heat that discharges in this process water that is cooled is taken away.
The condenser of absorption type refrigerating unit 201 links to each other through pipeline with the evaporimeter of absorption type refrigerating unit 201; The evaporimeter that liquid refrigerant in the condenser of absorption type refrigerating unit 201 enters into the absorption type refrigerating unit 201 of low pressure becomes low pressure, gaseous refrigerant, freezes in this process: absorb heat, output cold.
The evaporimeter of absorption type refrigerating unit 201 links to each other through pipeline with the absorber of absorption type refrigerating unit 201; Low pressure in the evaporimeter of absorption type refrigerating unit 201, gaseous refrigerant enter into the absorber of absorption type refrigerating unit 201; The concentrated solution of having separated out cold-producing medium in the generator of absorption type refrigerating unit 201 sprays in the absorber of absorption type refrigerating unit 201 through pipeline transmission; Thereby absorbed low pressure, gaseous refrigerant in the absorber of said absorption type refrigerating unit, be back to again in the generator of absorption type refrigerating unit 201 through pipeline after forming weak solution.Absorb forming heat that weak solution the produced water that is cooled takes away.
Absorption type refrigerating unit 201 also comprises the cooling water circulating line; Cooling water flows into from the cooling water circulating line import of absorption type refrigerating unit 201; The flow through condenser of absorption type refrigerating unit 201 and the absorber of absorption type refrigerating unit 201 are for the condenser of absorption type refrigerating unit 201 and the absorber of absorption type refrigerating unit 201 are lowered the temperature; The cooling water that has absorbed heat in the absorber of the condenser of absorption type refrigerating unit 201 and absorption type refrigerating unit 201 flows out from the cooling water circulating line outlet of absorption type refrigerating unit 201.
The cut-away view of second heating plant 203 is as shown in Figure 3, comprising: evaporimeter 311, compressor 312, condenser 313, cold-producing medium circulating line 314, choke valve 315, the first heat exchange pond 316, the second heat exchange pond 317.
The cooling water circulating line outlet of absorption type refrigerating unit 201 links to each other through pipeline with the water inlet in the first heat exchange pond 316, and the cooling water circulating line import of absorption type refrigerating unit 201 links to each other through pipeline with the delivery port in the first heat exchange pond 316.Enter into the first heat exchange pond 316 from the water inlet of absorption type refrigerating unit 201 cooling waters that flow out, that absorbed heat through the first heat exchange pond 316, behind the first heat exchange pond 316, be back to absorption type refrigerating unit 201 from the delivery port in the first heat exchange pond 316.Evaporimeter 311 is arranged in the first heat exchange pond 316, is used for absorbing the heat of cooling water in the first heat exchange pond 316 of flowing through.
The delivery port in the second heat exchange pond 317 links to each other through pipeline with the water inlet of second heat supply pipeline, and the inlet port in the second heat exchange pond 317 links to each other through pipeline with the delivery port of second heat supply pipeline.The mobile medium that has in the second heat exchange pond 317 flow into second heat supply pipeline through delivery port, and behind second heat supply pipeline, the inlet port through the second heat exchange pond 317 is back in the second heat exchange pond 317 again.Condenser 313 is arranged in the second heat exchange pond 317, is used for the medium release heat to the second heat exchange pond 317 of flowing through.
Valve closing at control device 204 controls second heat supply pipeline; The valve opening of first heat supply pipeline; When thereby control switching second heating plant 203 was the generator heat supply of absorption type refrigerating unit 201 through second heat supply pipeline, second heating plant 203 was that the working method of heat pump assembly is:
Be arranged at the evaporimeter 311 of the said heat pump assembly in the first heat exchange pond 316 of said heat pump assembly, absorb the heat of the cooling water in the first heat exchange pond 316 of flowing through; Said cooling water is that the cooling water circulating line outlet from said absorption type refrigerating unit 201, the water inlet in the first heat exchange pond 316 flow into the first heat exchange pond 316; And said cooling water is the cooling of condenser in the said absorption type refrigerating unit 201 and absorber from the back cooling water circulating line import inflow from said absorption type refrigerating unit 201 of the delivery port outflow in the first heat exchange pond 316;
Be arranged at the condenser 313 of the said heat pump assembly in the second heat exchange pond 317 of said heat pump assembly, the medium release heat in the second heat exchange pond 317 of flowing through; Said medium is the inlet port inflow from the delivery port of second heat supply pipeline, the second heat exchange pond 317; And said medium is the generator heat supply of said absorption type refrigerating unit 201 from the back water inlet inflow from second heat supply pipeline of the delivery port outflow in the second heat exchange pond 317.
The overall operation principle of heat pump assembly is:
The compressor 312 of said heat pump assembly, condenser 313, choke valve 315, evaporimeter 311 join end to end through cold-producing medium circulating line 314 successively, constitute the circulation canal of the heat pump assembly cold-producing medium of sealing; Wherein, the heat pump assembly cold-producing medium refers to the cold-producing medium that in heat pump assembly, flows.
The heat pump assembly cold-producing medium is compressed machine 312 pressurizations; Become high temperature and high pressure gas; After getting into the condenser 313 of heat pump assembly, the condenser 313 condensation liquefaction heat pump assembly cold-producing mediums of heat pump assembly make said heat pump assembly cold-producing medium become liquid; The heat that in this process, said heat pump assembly cold-producing medium is discharged is discharged in the second heat exchange pond; Medium after being heated flow into second heat supply pipeline from the delivery port in the second heat exchange pond 317, and after the generator of absorption type refrigerating unit 201 carried out heat supply, the inlet port from the second heat exchange pond 317 was back to the second heat exchange pond 317 again through second heat supply pipeline.Fig. 4 shows the circulation sketch map of the medium in the second heat exchange pond 317.
315 pairs of heat pump assembly cold-producing mediums that flow out from the condenser 313 of heat pump assembly of the choke valve of heat pump assembly reduce pressure, and the heat pump assembly cold-producing medium becomes low-temp low-pressure liquid after choke valve 315 decompressions.The liquid refrigerant of low-temp low-pressure gets into the evaporimeter 311 of heat pump assembly; Evaporation gasification heat absorption; Become gas, in this process, absorb heat in the cooling water of evaporimeter 311 from the first heat exchange pond 316, be cooling water temperature; Cooling water after the cooling flows out from the delivery port in the first heat exchange pond 316; After flowing into the condenser and absorber of absorption type refrigerating unit 201, from absorption type refrigerating unit 201 absorptions, with the heat that discharges, the water inlet through the first heat exchange pond 316 is back in the first heat exchange pond 316 again.Fig. 5 shows the circulation sketch map of cooling water.
The cold-producing medium of gaseous state is back to compressor 312 again through the cold-producing medium circulating line, and compressor compresses once more, repeats above-mentioned operation.
Above-mentioned control device 204 controls switching the, first heating plant 202 or second heating plant 203 can be provided with according to actual conditions for the concrete switching condition of the generator heat supply of absorption type refrigerating unit 201.For example, for the situation of first heating plant 202 for the heating plant that utilizes solar energy, do not have the situation of the sun when evening or cloudy day, then control device 204 can be controlled and switch second heating plant 203 and be the generator heat supply of absorption type refrigerating unit 201.
Again perhaps; Control device 204 control first heating plant 202 be absorption type refrigerating unit 201 the generator heat supply a period of time of after; Be the heat that utilizes absorption type refrigerating unit 201 to take out of through cooling water; Be the generator heat supply of absorption type refrigerating unit 201 and switch to second heating plant 203, can make full use of the useless waste heat that absorption type refrigerating unit 201 discharges in process of refrigerastion, thereby further reach the effect of energy savings.In addition; Temperature in the generator of temperature sensor monitors absorption type refrigerating unit 201 also can be set in the generator of absorption type refrigerating unit 201; If the temperature value that temperature sensor detects surpasses setting value (this setting value is set according to concrete condition, such as 80 ℃ or 120 ℃), the compressor that can control second heating plant 203 reduces work done power; Perhaps control the choke valve of second heating plant 203, make condenser 313 reduce the heat that discharges; Perhaps, connect the pipeline between second heat supply pipeline and the thermal generator, shunt a part of heat in order to generating, thereby further reach the effect of energy savings to thermal generator.
The absorption system of the embodiment of the invention is owing to be that the generator of absorption type refrigerating unit carries out heat supply except adopting traditional direct-fired heating plant; Can also adopt the heat pump assembly that can utilize recovery waste heat to carry out heat supply for the generator of absorption type refrigerating unit; Thereby both can adopt heat energy also can adopt electric energy to carry out absorption refrigeration; Make Absorption Refrigerator go for more conditions, be more convenient for absorption system user's use.
And; Adopting heat pump assembly is that the generator of absorption type refrigerating unit is when carrying out heat supply; Can recycle the heat in the cooling water that from absorption type refrigerating unit, flows out; The cooling water that has reduced temperature is re-entered in the absorption type refrigerating unit, thereby reclaimed waste heat, reach the purpose of further energy savings.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. an absorption system is characterized in that, comprising: first heating plant, second heating plant, first heat supply pipeline, second heat supply pipeline, absorption type refrigerating unit and control device;
Valve in said control device and first heat supply pipeline and the valve in second heat supply pipeline are electrically connected; Be used to control the valve opening of first heat supply pipeline; The valve closing of second heat supply pipeline, thus control switching first heating plant is the generator heat supply of said absorption type refrigerating unit through first heat supply pipeline; Perhaps, control the valve closing of second heat supply pipeline, the valve opening of first heat supply pipeline, thus control switching second heating plant is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline;
The evaporimeter of said absorption type refrigerating unit is used to export cold.
2. the system of claim 1 is characterized in that, said absorption type refrigerating unit also comprises: condenser, absorber, cooling water circulating line; And,
Solution absorption in the generator of said absorption type refrigerating unit behind the heat that discharges of said direct-fired heating plant or heat pump assembly, the cold-producing medium in the solution is separated out, and becomes gaseous refrigerant;
Gaseous refrigerant gets in the condenser of said absorption type refrigerating unit and is condensed into liquid refrigerant, and the heat that discharges in this process water that is cooled is taken away;
The evaporimeter that said liquid refrigerant enters into the said absorption type refrigerating unit of low pressure becomes low pressure, gaseous refrigerant, freezes in this process: absorb heat, output cold;
Said low pressure, gaseous refrigerant enter into the absorber of said absorption type refrigerating unit; The concentrated solution of having separated out cold-producing medium in the generator of said absorption type refrigerating unit is transferred to spray in the absorber of said absorption type refrigerating unit and goes out; Thereby absorbed low pressure, gaseous refrigerant in the absorber of said absorption type refrigerating unit, be back to again in the generator of said absorption type refrigerating unit after forming weak solution; Forming the heat that is produced in the weak solution process water that is cooled in the absorber of said absorption type refrigerating unit takes away;
Said cooling water flows into from the cooling water circulating line import of said absorption type refrigerating unit, and the cooling water that has absorbed heat in the condenser of said absorption type refrigerating unit and the absorber of absorption type refrigerating unit flows out from the cooling water circulating line outlet of said absorption type refrigerating unit.
3. system as claimed in claim 2 is characterized in that, said first heating plant is direct-fired heating plant or the heating plant that utilizes solar energy; Said second heating plant is a heat pump assembly.
4. system as claimed in claim 3 is characterized in that, said heat pump assembly comprises the first heat exchange pond, the second heat exchange pond, evaporimeter, condenser;
The cooling water circulating line outlet of said absorption type refrigerating unit links to each other through pipeline with the water inlet in the first heat exchange pond, and the cooling water circulating line import of said absorption type refrigerating unit links to each other through pipeline with the delivery port in the first heat exchange pond;
The evaporimeter of said heat pump assembly is arranged in the first heat exchange pond, is used for absorbing the heat of cooling water in the first heat exchange pond of flowing through;
The delivery port in the second heat exchange pond links to each other through pipeline with the water inlet of second heat supply pipeline, and the inlet port in the second heat exchange pond links to each other through pipeline with the delivery port of second heat supply pipeline;
The condenser of said heat pump assembly is arranged in the second heat exchange pond, is used for the medium release heat to the second heat exchange pond of flowing through.
5. system as claimed in claim 4 is characterized in that, said heat pump assembly also comprises: compressor, choke valve, cold-producing medium circulating line; The compressor of said heat pump assembly, condenser, choke valve, evaporimeter join end to end through said cold-producing medium circulating line successively, constitute the circulation canal of the heat pump assembly cold-producing medium of sealing;
Said compressor is used for said heat pump assembly pressurizes refrigerant, makes the heat pump assembly cold-producing medium become the condenser that gets into said heat pump assembly behind the gaseous state of HTHP;
The condenser of said heat pump assembly specifically is used for the said heat pump assembly cold-producing medium of condensation liquefaction, makes said heat pump assembly cold-producing medium become liquid, and the heat that said heat pump assembly cold-producing medium is discharged is discharged in the second heat exchange pond;
The choke valve of said heat pump assembly is used for the heat pump assembly cold-producing medium that the condenser from said heat pump assembly flows out is reduced pressure, and makes said heat pump assembly cold-producing medium become low-temp low-pressure liquid;
The evaporation apparatus body of said heat pump assembly is used for absorbing the heat of the cooling water that flows through from the first heat exchange pond.
6. system as claimed in claim 5 is characterized in that, the medium in the said second heat exchange pond specifically can be water, conduction oil, air.
7. absorption-type refrigerating method comprises:
Control device is controlled the valve opening of first heat supply pipeline, the valve closing of second heat supply pipeline, thus control switching first heating plant is the generator heat supply of absorption type refrigerating unit through first heat supply pipeline; Perhaps, control the valve closing of second heat supply pipeline, the valve opening of first heat supply pipeline, thus control switching second heating plant is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline;
The evaporimeter output cold refrigeration of said absorption type refrigerating unit.
8. method as claimed in claim 7 is characterized in that, said first heating plant is direct-fired heating plant.
9. method as claimed in claim 8 is characterized in that, said second heating plant is a heat pump assembly; And,
Control the valve closing of second heat supply pipeline at said control device, the valve opening of first heat supply pipeline, thus when control was switched second heating plant and is the generator heat supply of said absorption type refrigerating unit through second heat supply pipeline, said method also comprised:
Be arranged at the evaporimeter of the said heat pump assembly in the first heat exchange pond of said heat pump assembly, absorb the heat of the cooling water in the first heat exchange pond of flowing through; Said cooling water is that the cooling water circulating line outlet from said absorption type refrigerating unit, the water inlet in the first heat exchange pond flow into the first heat exchange pond; And said cooling water is the cooling of condenser in the said absorption type refrigerating unit and absorber from the back cooling water circulating line import inflow from said absorption type refrigerating unit of the delivery port outflow in the first heat exchange pond;
Be arranged at the condenser of the said heat pump assembly in the second heat exchange pond of said heat pump assembly, the medium release heat in the second heat exchange pond of flowing through; Said medium is the inlet port inflow from the delivery port of second heat supply pipeline, the second heat exchange pond; And said medium is the generator heat supply of said absorption type refrigerating unit from the back water inlet inflow from second heat supply pipeline of the delivery port outflow in the second heat exchange pond.
10. method as claimed in claim 9 is characterized in that, said medium specifically can be water, conduction oil, air.
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