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Main performance index of industrial refrigeration machine

Source: | Views:451 | Published:2015-05-22 11:12:08

     Operating temperature (of the vapor compression type refrigerating machine for the evaporation temperature and condensation temperature, the gas compression type refrigerating machine and a semiconductor refrigerator for cold body temperature and the cooling medium temperature) the main performance indices of the refrigerator, refrigeration (refrigeration machine in unit time be cold but object to remove heat from), power or heat consumption, refrigeration coefficient (a measure of the amount of compression refrigeration of economic indicators, consumption per unit power can get the cold quantity) and thermal coefficient (measured in absorption type and steam jet refrigeration of economic indicators, refers to consumption unit heat quantity can get the cold quantity). The modern refrigeration machine with the most widely used in the vapor compression refrigeration compressor.

     1.Compression type refrigerating machine. Rely on the action of the compressor increase the pressure of the refrigerant to achieve refrigeration cycle, according to the type of refrigerant and points for vapor compression refrigeration machine with hydraulic evaporation refrigeration based refrigerant to cycle gas - liquid phase change) and gas compression type refrigerating machine with high pressure gas expansion refrigeration based, refrigerant is always in gas state) two.

    2.Absorption refrigeration machine. Rely on the absorber and generator group (thermochemical compressor) completes the refrigeration cycle, can divide again for ammonia water absorption type, lithium bromide absorption and absorption diffusion type three.
    3.Steam jet refrigeration machine. Rely on the steam ejector (injection type compressor) the complete refrigeration cycle.
    4.The semiconductor refrigerator. Using semiconductor hot - electric effect from cold.

To choose according to requirement of business 
     Water cooled chiller and air-cooled chiller, each have each characteristic, need to the user according to the different use environment, space, and set the cooling capacity, different urban areas such as to be considered and then be selected.

Cooling mode of chiller
     Air cooled chiller adopts air cooling mode, eliminating the need for cooling water system are essential for the cooling tower,a circulating water pump and a pipeline system, to avoid water poor area caused by fouling in condensers, pipe blockage, saving water resources, is the cold air conditioning equipment products, repair and maintenance of the most economical, simple chiller. The air cooled chiller is higher than the one time investment of the water cooled chiller, but the annual operating expenses of the water cooler is lower than that of the water cooling water cooler. In addition, the noise of the air-cooled chiller, the exhaust of the heat is directly distributed in the cold water machine to install the seat, so the operation of the ambient temperature, can only be installed outside.

     Water cooled chiller must be equipped with cooling tower and a circulating water pump can be used. Relative to the plastic industry,etc,the temperature is not high in the area or the spring ,autumn and winter can use cooling tower cooling, so water cooled chillers occupy absolute advantage. But open circulating cooling water system, due to the cooling water after absorbing heat and contact with air, CO2 escape into the air, dissolved oxygen and turbidity increase, easy to cause the corrosion and fouling in cooling water circulation system, the breeding of bacteria and algae and sludge problems, if not water quality treatment could seriously damage the cold water machine, greatly reduce heat exchange efficiency, resulting in energy waste. Therefore, it is very important for the water system to carry out the inhibition, scale inhibition, and sterilization and algae removal.

     


Tags:industrial refrigeration machine,industrial,main performance

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