CN214199258U - Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat - Google Patents

Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat Download PDF

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Publication number
CN214199258U
CN214199258U CN202023222540.4U CN202023222540U CN214199258U CN 214199258 U CN214199258 U CN 214199258U CN 202023222540 U CN202023222540 U CN 202023222540U CN 214199258 U CN214199258 U CN 214199258U
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pipeline
industrial waste
heat
waste heat
generator
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CN202023222540.4U
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Chinese (zh)
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林伟
郑水华
付月瑶
刘建飞
王兆东
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy

Abstract

The utility model discloses an utilize ammonia absorption refrigeration system of solar energy and industry waste heat, generator bottom liquid outlet passes through the pipeline with solution heat exchanger bottom entry and links to each other, solution heat exchanger top export passes through the pipeline with rectifier bottom entry and links to each other, rectifier top export passes through the pipeline with condenser lateral part entry and links to each other, condenser lateral part export passes through the pipeline with regenerator top entry and links to each other, regenerator bottom export passes through the pipeline with evaporator bottom entry and links to each other, evaporator top export passes through the pipeline with regenerator bottom entry and links to each other, regenerator top export passes through the pipeline with absorber lateral part entry and links to each other, absorber bottom export passes through the pipeline with generator lateral part entry and links to each other. The system has the characteristics of cleanness, energy conservation, environmental protection, low noise, short construction period and the like.

Description

Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat
Technical Field
The utility model relates to an energy utilization technical field, concretely relates to utilize ammonia absorption formula refrigerating system of solar energy and industry waste heat.
Background
With the increasingly serious environmental problems, more efficient and environment-friendly refrigeration technologies are actively explored domestically and internationally, and the solar ammonia-water absorption refrigeration technology opens up a new field for the application and development of solar energy. The solar absorption refrigeration system consists of two main parts: a solar heat utilization system and an absorption chiller system; the refrigeration system utilizes the heat provided by the solar heat collector to drive the ammonia water refrigeration unit to refrigerate, the refrigeration technology can utilize the combination of solar energy and ammonia-water absorption refrigeration, and the advantages of the refrigeration technology in energy conservation and environmental protection are shown to the maximum extent.
In the existing absorption refrigeration technology, a heat source for heating solution in a generator is hot water or high-temperature steam, and the hot water or the high-temperature steam generally comes from a boiler, but the operation of the boiler needs to burn fossil fuel, so that gas harmful to the atmosphere is discharged, and the environment is polluted;
the solar energy is inexhaustible renewable clean energy, and the energy crisis can be well relieved by reasonably developing and using the solar energy.
In the industrial production process, low-grade waste heat of 60-200 ℃ is always available, and compared with the development and utilization of high-medium temperature industrial waste heat, the low-grade waste heat is often not utilized, and the direct discharge of the part of waste heat causes a large amount of energy waste on one hand and environmental heat pollution on the other hand. If the low-grade waste heat can be recycled, a large amount of resources can be saved.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of existence among the prior art, the utility model provides an utilize solar energy and industry waste heat as the ammonia absorption formula refrigerating system of heat source utilizes solar collector to convert light energy into heat energy and industry waste heat, and drive ammonia absorption formula refrigerating unit refrigerates.
The utility model adopts the technical proposal that:
an ammonia absorption refrigeration system using solar energy and industrial waste heat is characterized by comprising a generator, a solution heat exchanger, an absorber, a rectifier, a condenser heat regenerator and an evaporator; the liquid outlet at the bottom of the generator is connected with the inlet at the bottom of the solution heat exchanger through a pipeline, the outlet at the top of the solution heat exchanger is connected with the inlet at the bottom of the rectifier through a pipeline, the outlet at the top of the rectifier is connected with the inlet at the side part of the condenser through a pipeline, the outlet at the side part of the condenser is connected with the inlet at the top of the heat regenerator through a pipeline, the outlet at the bottom of the heat regenerator is connected with the inlet at the bottom of the evaporator through a pipeline, the outlet at the top of the evaporator is connected with the inlet at the bottom of the heat regenerator through a pipeline, the outlet at the top of the heat regenerator is connected with the inlet at the side part of the absorber through a pipeline, and the outlet at the bottom of the absorber is connected with the inlet at the side part of the generator through a pipeline.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that the generator is connected with a heating device, the heating device comprises a solar heat collection system and a low-grade industrial waste heat system, and an absorbent and a refrigerant solution in the generator are heated through the solar heat collection system or the low-grade industrial waste heat system.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that the solar heat collection system comprises a heliostat control system, a solar heat collector array and a first valve, the solar heat collector array is communicated with a heating coil in a generator through a pipeline, and a hot water pump is arranged on the pipeline to carry out active circulation.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that the low-grade industrial waste heat system comprises an industrial waste water circulation pipeline and a second valve, the industrial waste water circulation pipeline is communicated with a heating coil in a generator through a pipeline, and a hot water pump is arranged on the pipeline to carry out active circulation.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that a throttle valve is arranged on a pipeline between an outlet at the bottom of the heat regenerator and an inlet at the bottom of the evaporator.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that a flow regulating valve is arranged on a pipeline between an outlet at the top of the solution heat exchanger and an inlet at the top of the absorber.
The ammonia absorption refrigeration system utilizing solar energy and industrial waste heat is characterized in that a solution pump is arranged on a pipeline between an outlet at the bottom of the absorber and an inlet at the side part of the generator.
The utility model discloses following beneficial effect has:
the generator of the ammonia absorption refrigeration system is heated by using solar energy and industrial waste heat as heat sources to reduce the water content in the ammonia solution, so that the special utilization of low-grade energy is realized, and the ammonia absorption refrigeration system has the characteristics of cleanness, energy conservation, environmental protection, low noise, short construction period and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the generator heating apparatus;
in the figure: 1-a condenser; 2-an evaporator; 3-a heat regenerator; 4-a throttle valve; 5-a hot water pump; 6-a heating device; 7-a rectifier; 8-a generator; 9-solution heat exchanger; 10-a flow regulating valve; 11-an absorber; 12-a solution pump; 13-a heliostat control system; 14-valve one; 15-valve two.
Detailed Description
The purpose, technical solution and advantages of the present invention will be made clearer, and the technical solution of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments.
As shown in fig. 1-2, an ammonia absorption refrigeration system using solar energy and industrial waste heat includes a condenser 1, an evaporator 2, a heat regenerator 3, a throttle valve 4, a hot water pump 5, a heating device 6, a rectifier 7, a generator 8, a solution heat exchanger 9, a flow rate adjusting valve 10, an absorber 11, and a solution pump 12.
After the absorbent-refrigerant solution in the generator 8 is heated, the refrigerant is continuously gasified, meanwhile, the weak solution absorbent reaches the bottom of the generator 8 along the wall surface, and the weak solution from the generator 8 is cooled in the solution heat exchanger 9 to release heat and then reaches the absorber 11. The gasified refrigerant steam firstly enters a rectifier 7 to obtain ammonia gas with higher purity, then enters a condenser 1, is cooled by cooling water and then is condensed, the refrigerant in the condenser 1 passes through a heat regenerator 3 and then enters an evaporator 2 through a throttle valve 4 for throttling and pressure reduction, heat is absorbed in the evaporator 2 to achieve the purpose of cooling and refrigeration, then the low-pressure gaseous refrigerant enters an absorber 11 and is absorbed by dilute solution in the absorber 11 to form absorbent-refrigerant solution, and the absorbent-refrigerant solution is heated in a solution heat exchanger 9 through a solution pump 12 and then is sent back to a generator 8 to complete the whole cycle. The heat source for heating the absorbent solution in the generator 8 is solar heat collector and/or low-grade industrial waste heat, wherein the low-grade industrial waste heat is industrial waste water, low-temperature flue gas or circulating water used for cooling in industry.
The system is designed into the following two working modes:
the first mode of operation: the solar radiation intensity is high in spring, summer and autumn, the environment temperature is high, the system receives solar radiation and can meet the heat required by the ammonia absorption type refrigerating system, the solar heat collector device is only needed to be started to meet the requirement, at the moment, the first valve 14 is opened, and the second valve 15 is closed.
The heliostat control system 13 is used to realize real-time tracking of the sun and project light spots onto the photothermal converter in the solar collector array system, and the photothermal converter absorbs the high heat flux density light spots projected by the heliostat and converts the high heat flux density light spots into high temperature heat energy of the working fluid.
The second working mode is as follows: in winter, the solar radiation intensity is low, the environmental temperature is low, and the system cannot meet the heat required by the ammonia absorption refrigeration system when receiving solar radiation, so that low-grade industrial waste heat is used as a heat source for heating the absorbent solution in the generator in winter, at the moment, the first valve 14 is closed, and the second valve 15 is opened.
The generator of the ammonia absorption refrigeration system is heated by using solar energy and industrial waste heat as heat sources to reduce the water content in the ammonia solution, so that the special utilization of low-grade energy is realized, and the ammonia absorption refrigeration system has the characteristics of cleanness, energy conservation, environmental protection, low noise, short construction period and the like.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (7)

1. An ammonia absorption refrigeration system using solar energy and industrial waste heat is characterized by comprising a generator (8), a solution heat exchanger (9), an absorber (11), a rectifier (7), a condenser (1), a heat regenerator (3) and an evaporator (2); the liquid outlet at the bottom of the generator (8) is connected with the inlet at the bottom of the solution heat exchanger (9) through a pipeline, the outlet at the top of the solution heat exchanger (9) is connected with the inlet at the bottom of the rectifier (7) through a pipeline, the outlet at the top of the rectifier (7) is connected with the inlet at the side part of the condenser (1) through a pipeline, the outlet at the side part of the condenser (1) is connected with the inlet at the top of the heat regenerator (3) through a pipeline, the outlet at the bottom of the heat regenerator (3) is connected with the inlet at the bottom of the evaporator (2) through a pipeline, the outlet at the top of the evaporator (2) is connected with the inlet at the bottom of the heat regenerator (3) through a pipeline, the outlet at the top of the heat regenerator (3) is connected with the inlet at the side of the absorber (.
2. The ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 1, wherein the generator (8) is connected with a heating device (6), the heating device (6) comprises a solar heat collection system and a low-grade industrial waste heat system, and the absorbent and refrigerant solution in the generator (8) are heated by the solar heat collection system or the low-grade industrial waste heat system.
3. The ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 2, wherein the solar heat collection system comprises a heliostat control system (13), a solar heat collector array and a first valve (14), the solar heat collector array is communicated with the heating coil in the generator (8) through a pipeline, and a hot water pump (5) is arranged on the pipeline to perform active circulation.
4. The ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 2, wherein the low-grade industrial waste heat system comprises an industrial waste water circulation pipeline and a second valve (15), the industrial waste water circulation pipeline is communicated with the heating coil in the generator (8) through a pipeline, and a hot water pump (5) is arranged on the pipeline for active circulation.
5. An ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 1, characterized in that a throttle valve (4) is arranged on the pipeline between the bottom outlet of the heat regenerator (3) and the bottom inlet of the evaporator (2).
6. The ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 1, characterized in that a flow control valve (10) is arranged on the pipeline between the top outlet of the solution heat exchanger (9) and the top inlet of the absorber (11).
7. An ammonia absorption refrigeration system using solar energy and industrial waste heat according to claim 1, characterized in that a solution pump (12) is arranged on the pipeline between the outlet at the bottom of the absorber (11) and the inlet at the side of the generator (8).
CN202023222540.4U 2020-12-28 2020-12-28 Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat Active CN214199258U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023222540.4U CN214199258U (en) 2020-12-28 2020-12-28 Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat

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Application Number Priority Date Filing Date Title
CN202023222540.4U CN214199258U (en) 2020-12-28 2020-12-28 Ammonia water absorption type refrigerating system utilizing solar energy and industrial waste heat

Publications (1)

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CN214199258U true CN214199258U (en) 2021-09-14

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