CN212274317U - System for preparing high-temperature hot water by utilizing waste heat recovery in refrigeration system - Google Patents
System for preparing high-temperature hot water by utilizing waste heat recovery in refrigeration system Download PDFInfo
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- CN212274317U CN212274317U CN202020851817.0U CN202020851817U CN212274317U CN 212274317 U CN212274317 U CN 212274317U CN 202020851817 U CN202020851817 U CN 202020851817U CN 212274317 U CN212274317 U CN 212274317U
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Abstract
A high-temperature hot water preparation system by utilizing waste heat recovery in a refrigeration system. The traditional refrigerating system adopting Freon as a refrigerant is subjected to the thermodynamic property of the refrigerant, and the temperature of water cannot be too high when heat recovery is carried out on condensation waste heat. The utility model discloses the constitution includes: an R134a refrigeration working medium circulating system and an R744 refrigeration working medium circulating system; the R134a refrigerant circulating system comprises a group of R134a compressors (1), the outlets of the group of R134a compressors are respectively connected with the inlets of the R134a oil separators (2) through pipelines, the outlets of the R134a oil separators are connected with the inlets of the evaporative condensers (3) through pipelines, the outlets of the evaporative condensers are connected with the inlets of the condensing evaporators (4) through pipelines, and the outlets of the condensing evaporators are communicated with the inlets of the R134a liquid reservoirs (5). The utility model is used for utilize waste heat recovery to prepare high temperature hot water among the refrigerating system.
Description
The technical field is as follows:
the utility model relates to a utilize waste heat recovery to prepare high temperature hot water system among refrigerating system.
Background art:
when the refrigeration system is used for preparing low temperature, a large amount of heat can be released from the condensation side of the system, so that the efficiency of the whole system can be improved by applying the refrigeration system to waste heat recovery, and the purposes of energy conservation and environmental protection are achieved. The traditional refrigerating system adopting Freon as a refrigerant is subjected to the thermodynamic property of the refrigerant, and the temperature of water cannot be too high when heat recovery is carried out on condensation waste heat.
The utility model has the following contents:
the utility model aims at solving the problem of above-mentioned existence, provide an utilize waste heat recovery to prepare high temperature hot water system among the refrigerating system of R134a refrigerant cycle system and R744 refrigerant cycle system.
The above purpose is realized by the following technical scheme:
a system for preparing high-temperature hot water by utilizing waste heat recovery in a refrigeration system comprises an R134a refrigeration working medium circulation system and an R744 refrigeration working medium circulation system;
the R134a refrigerant cycle system comprises a group of R134a compressors, the outlets of the group of R134a compressors are respectively connected with the inlets of the R134a oil separators through pipelines, the outlets of the R134a oil separators are connected with the inlets of the evaporative condensers through pipelines, the outlets of the evaporative condensers are connected with the inlets of the condensing evaporators through pipelines, the outlets of the condensing evaporators are communicated with the inlet of the R134a liquid storage tank, the outlets of the R134a liquid storage tank are communicated with a group of economizers through pipelines, the outlets of the economizers are communicated with the end evaporators through a liquid supply pipe, and the end evaporators are communicated with the suction port of the R134a compressor through a gas return pipe;
the R744 refrigeration working medium circulating system comprises a group of R744 compressors, the outlets of the R744 compressors are respectively connected with the inlets of the R744 oil separators through pipelines, the outlets of the R744 oil separators are connected with the inlets of the gas coolers through pipelines, the outlets of the gas coolers are connected with the inlets of the R744 liquid reservoirs through pipelines, the outlets of the R744 liquid reservoirs are connected with the inlets of the condensing evaporators through pipelines and the pipelines are provided with expansion valves, the outlets of the condensing evaporators are connected with the inlets of the R744 gas-liquid separators through pipelines, and the outlets of the R744 gas-liquid separators are communicated with the inlets of the R744 compressors.
Has the advantages that:
1. the utility model discloses increase carbon dioxide and stride critical compressor, absorb the waste heat of freon refrigerant side, utilize the high characteristics of carbon dioxide exhaust temperature to prepare high temperature hot water.
The utility model discloses the proper super-cooled degree that increases liquid after the condensation among the refrigerating system can improve refrigerating system's refrigerating output to improve whole refrigerating system's refrigeration efficiency.
The utility model discloses use carbon dioxide as the refrigerant, carbon dioxide is as pure natural refrigerant, and ozone layer destroys the latent energy and is 0, and global warming latent energy is 1, has superior thermodynamic properties.
The utility model discloses increase carbon dioxide and stride critical circulation, and carbon dioxide is higher at the exhaust temperature of transcritical circulation in-process, and the gas cooling process can have fine heat transfer with water, obtains the hot water of higher temperature, prepares 40~95 ℃ of high temperature hot water when increasing R134a refrigeration cycle super-cooled rate.
The utility model discloses can set up the water supply leaving water temperature automatically, the water supply temperature range is 40~95 ℃.
Description of the drawings:
FIG. 1 is a schematic diagram of the present invention;
in the figure: 1. r134a compressor; 2. an R134a oil separator; 3. an evaporative condenser; 4. a condensing evaporator; 5. r134a reservoir; 6. an economizer; 7. a terminal evaporator; 8. an R744 compressor; 9. an R744 oil separator; 10. a gas cooler; 11. a reservoir of R744; 12. an expansion valve; 13. a gas-liquid separator of R744; 14. and (4) an air return pipe.
The specific implementation mode is as follows:
example 1:
a system for preparing high-temperature hot water by utilizing waste heat recovery in a refrigeration system comprises an R134a refrigeration working medium circulation system and an R744 refrigeration working medium circulation system;
the R134a refrigerant cycle system comprises a group of R134a compressors 1, the outlets of the group of R134a compressors are respectively connected with the inlets of the R134a oil separators 2 through pipelines, the outlets of the R134a oil separators are connected with the inlets of the evaporative condensers 3 through pipelines, the outlets of the evaporative condensers are connected with the inlets of the condensing evaporators 4 through pipelines, the outlets of the condensing evaporators are communicated with the inlet of the R134a liquid accumulator 5, the outlets of the R134a liquid accumulator are communicated with a group of economizers 6 through pipelines, the outlets of the economizers are communicated with a terminal evaporator 7 through a liquid supply pipe, and the terminal evaporator is communicated with the suction port of the R134a compressor through a gas return pipe 14;
the R744 refrigeration working medium circulating system comprises a group of R744 compressors 8, outlets of the group of R744 compressors are respectively connected with inlets of R744 oil separators 9 through pipelines, outlets of the R744 oil separators are connected with inlets of gas coolers 10 through pipelines, outlets of the gas coolers are connected with inlets of R744 liquid reservoirs 11 through pipelines, outlets of the R744 liquid reservoirs are connected with inlets of condensing evaporators through pipelines and are provided with expansion valves 12, outlets of the condensing evaporators are connected with inlets of R744 gas-liquid separators 13 through pipelines, and outlets of the R744 gas-liquid separators are communicated with inlets of the R744 compressors.
Example 2:
a preparation method of a system for preparing high-temperature hot water by utilizing waste heat recovery in a refrigeration system comprises the following steps:
r134a is used as the circulating part of the refrigerant: r134a is compressed by a compressor, enters an evaporative condenser through an oil separator for condensation, after condensation, R134a enters a condensation evaporator for continuous supercooling, after supercooling, R134a enters a liquid storage device and then enters an economizer, R134a is sent to a tail end evaporator after secondary supercooling, after evaporation, the gas state is changed to the gas state and returns to an air suction port of the R134a compressor, and the circulation is completed;
r744 is used as the circulating part of the refrigeration working medium: after being compressed by the compressor, the R744 enters the gas cooler through the oil separator to exchange heat with water to prepare high-temperature hot water, the R744 enters the R744 liquid storage device after being cooled, then enters the condensation evaporator through the expansion valve to be subcooled for R134a, and the R744 changes into a gas state and returns to the suction port of the R744 compressor through the gas-liquid separator to finish circulation.
Claims (1)
1. A system for preparing high-temperature hot water by recovering waste heat in a refrigerating system is characterized in that: the system for preparing high-temperature hot water by utilizing waste heat recovery in the refrigeration system comprises an R134a refrigeration working medium circulation system and an R744 refrigeration working medium circulation system;
the R134a refrigerant cycle system comprises a group of R134a compressors, the outlets of the group of R134a compressors are respectively connected with the inlets of the R134a oil separators through pipelines, the outlets of the R134a oil separators are connected with the inlets of the evaporative condensers through pipelines, the outlets of the evaporative condensers are connected with the inlets of the condensing evaporators through pipelines, the outlets of the condensing evaporators are communicated with the inlet of the R134a liquid storage tank, the outlets of the R134a liquid storage tank are communicated with a group of economizers through pipelines, the outlets of the economizers are communicated with the end evaporators through a liquid supply pipe, and the end evaporators are communicated with the suction port of the R134a compressor through a gas return pipe;
the R744 refrigeration working medium circulating system comprises a group of R744 compressors, the outlets of the R744 compressors are respectively connected with the inlets of the R744 oil separators through pipelines, the outlets of the R744 oil separators are connected with the inlets of the gas coolers through pipelines, the outlets of the gas coolers are connected with the inlets of the R744 liquid reservoirs through pipelines, the outlets of the R744 liquid reservoirs are connected with the inlets of the condensing evaporators through pipelines and the pipelines are provided with expansion valves, the outlets of the condensing evaporators are connected with the inlets of the R744 gas-liquid separators through pipelines, and the outlets of the R744 gas-liquid separators are communicated with the inlets of the R744 compressors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020851817.0U CN212274317U (en) | 2020-05-20 | 2020-05-20 | System for preparing high-temperature hot water by utilizing waste heat recovery in refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111473545A (en) * | 2020-05-20 | 2020-07-31 | 万吨通科技有限公司 | System and method for preparing high-temperature hot water by recovering waste heat in refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473545A (en) * | 2020-05-20 | 2020-07-31 | 万吨通科技有限公司 | System and method for preparing high-temperature hot water by recovering waste heat in refrigeration system |
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Effective date of registration: 20231107 Address after: 436032 No.1 Donghu Road, Gedian Economic and Technological Development Zone, Ezhou City, Hubei Province Patentee after: Wuhan Wanton Huazhong Cold Chain Port Co.,Ltd. Address before: 436070 office building of Shangkong Huading Industrial Park, east of Chuangye Avenue, Gedian Development Zone, Ezhou City, Hubei Province Patentee before: Wantontong Technology Co.,Ltd. |
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