Refrigerating unit waste heat upgrading hot water utilization system and method
A refrigeration unit and waste heat technology, which is applied in the direction of refrigerators, separation methods, refrigeration and liquefaction, etc., can solve the problems of ineffective utilization, low temperature level, large quantity, etc., achieve remarkable waste heat recovery effect, meet the requirements of effective utilization, convection The effect of high heat transfer coefficient
Active Publication Date: 2019-12-03
CHINA UNIV OF MINING & TECH
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Problems solved by technology
[0002] The discharge of condensation waste heat of refrigeration units is an important part of the refrigeration system. Generally, surface heat exchangers are used to take away the heat of condensation through air or cooling water. The discharge of condensation heat is characterized by large quantities (greater than cooling capacity) and low temperature levels. Generally, condensation temperature Slightly higher than the ambient temperature (the specific value is related to the working fluid, compressor compression level, etc.), and cannot be effectively used
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, the waste heat upgrading hot water utilization system of the refrigerating unit of the present invention includes a spray-type air dehumidification device 21 arranged in a hot and humid environment and a waste heat upgrading combination device 5 arranged behind the refrigeration compressor 1,
[0021] The spray type air dehumidification device 21 is a box-shaped structure, the upper part of the spray type air dehumidification device 21 is provided with a dry air outlet, the lower part of the side is provided with a wet air inlet 24, and the middle part of the spray type air dehumidification device 21 is provided with Spray pipe The spray pipe is provided with a plurality of spiral nozzles 22, and the side wall below the spiral nozzle 22 is provided with corrugated plate packing 23 made of PVC material, and the bottom of the box is pro...
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The invention discloses a refrigerating unit waste heat upgrading hot water utilization system and method, which are suitable for recycling and utilizing waste heat under a mine. The system comprisesa spraying type air dehumidification device arranged in a humid and hot environment and a waste heat grading combination device arranged behind a refrigeration compressor. A moisture absorption concentrated solution is sprayed in the spraying type air dehumidification device to absorb latent heat of water vapor; according to the circulating cooling water waste heat upgrading hot water utilizationsystem, a high-temperature moisture absorption concentrated solution in a corrugated plate type heat regenerator and water vapor in a phase-change heat exchange device II are connected in series to perform graded heat exchange with circulating water, so waste heat at different temperatures is effectively used; according to the system, the working pressure of the waste heat grading combination device is regulated and controlled through the middle steam extraction pump and the electromagnetic control valve, the temperature of water vapor in the phase-change heat exchange device is achieved, andtherefore the temperature of a circulating cooling water outlet in the waste heat grading hot water utilization system of the refrigerating unit is adjusted.
Description
technical field [0001] The invention designs a system and method for upgrading waste heat of a refrigeration unit, and is especially suitable for the waste heat upgrading and hot water utilization system and method of a refrigeration unit used in the technical field of underground waste heat recovery and utilization in coal mines. Background technique [0002] The discharge of condensation waste heat of refrigeration units is an important part of the refrigeration system. Generally, surface heat exchangers are used to take away the heat of condensation through air or cooling water. The discharge of condensation heat is characterized by large quantities (greater than cooling capacity) and low temperature levels. Generally, condensation temperature Slightly higher than the ambient temperature (the specific value is related to the working fluid, compressor compression level, etc.), and cannot be effectively used. Contents of the invention [0003] Aiming at the deficiencies o...
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Login to View More IPC IPC(8): F25B1/00F28D20/02B01D53/26B01D53/18
CPCB01D53/185B01D53/263F25B1/00F28D20/02Y02E60/14
Inventor 菅从光张辉
Owner CHINA UNIV OF MINING & TECH