Pure CO2 skating rink refrigerating system

Abstract

The invention discloses a pure CO2 skating rink refrigerating system. The pure CO2 skating rink refrigerating system is structurally characterized in that a trans-critical compressor set, an oil separator, a heat recovery heat exchanger, a CO2 low-pressure liquid storage device and a CO2 low-pressure liquid storage device pressure maintaining unit are arranged in a machine room, a CO2 cooler is arranged outdoors, and an ice field pipeline heat exchanger is arranged in an ice field. A pure CO2 refrigerating system is adopted, a CO2 refrigerant directly exchanges heat with the ice field pipeline heat exchanger, the refrigerant evaporation temperature is high, the refrigerating capacity is large, the efficiency is high, the electric power is saved, moreover, the CO2 viscosity is low, a required conveying pump is low in power, moreover, CO2 serves as a refrigerant, the liquid exists in an evaporation pipeline all the time, the evaporation temperature is stable, the quality of prepared ice is better, moreover, the influence of CO2 on the environment is relatively small, one expansibility technical innovation is achieved for the prior art, and quite good popularization and use value is achieved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a pure CO 2 Ice rink cooling system. Background technique [0002] The existing ice rink system adopts the refrigerant ammonia / fluorine refrigerant, lowers the temperature of the brine in the shell-and-tube heat exchanger, and uses the brine pump to transport it to the ice rink pipeline heat exchanger to realize heat exchange. The ice layer is lowered to the required temperature. Since the cooling of the ice field undergoes secondary heat exchange, the evaporation temperature of the refrigerant is low, the power consumption is large, the energy efficiency is low, and the installation is complicated; The demand is large; the brine will corrode the pipes of the ice rink, which is unsafe; the refrigerant is harmful to the environment and human beings. Contents of the invention [0003] The technical problem mainly solved by the present invention is how to provide a pure CO...

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Problems solved by technology

[0002] The existing ice rink system adopts the refrigerant ammonia / fluorine refrigerant, lowers the temperature of the brine in the shell-and-tube heat exchanger, and uses the brine pump to transport it to the ice rink pipeline heat exchanger to realize heat exchange. The ice layer is lowered to the required temperature. Since the cooling of the ice field undergoes secondary heat exchange, the evaporation temperature of the refrigerant is low, the power consumption is large, the energy efficiency is low, and the installation is complicated; The demand is large; the brine will corrode the pipes of the ice rink, which is unsafe; the refrigerant is harmful to the environment and human beings

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