Condensation temperature-adjusting refrigeration system

Abstract

The invention relates to a condensation temperature-adjusting refrigeration system which comprises a compressor, an oil separator, a condenser, a liquid receiver, a refrigeration electromagnetic valve, a refrigeration expansion valve, an evaporator, a gas-liquid separator, a condensation temperature-adjusting heat exchanger, a bypass expansion valve, a condensation pressure sensor, a controller, a condenser electromagnetic valve, a condensation temperature-adjusting heat exchanger electromagnetic valve and a bypass electromagnetic valve. The system provides a refrigeration circulating system which can adjust the condensation temperature of an air-cooling condenser unit. By changing the condensation area to adjust the heat exchange of the condenser and changing the inlet air temperature ofthe condenser to change the heat transfer temperature difference of the condenser, the adjustment on the heat exchange of the condenser is realized so as to achieve the purpose of raising or loweringthe condensation temperature, so that the system can be adapted to the influence caused by the change of the environment temperature. Thus, the system can stably operate for a long time at overlow environmental temperature of below 0 DEG C and high environmental temperature of above 43 DEG C, and has the characteristic of low cost.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, in particular to an air-cooled condenser refrigeration cycle system. Background technique [0002] The condensers used in refrigeration systems are mainly air-cooled condensers and water-cooled condensers. Because air-cooled condensers have the obvious advantage of not requiring water sources and water circulation systems, they are widely used in refrigeration systems. The disadvantage of the air-cooled condenser in the prior art is that it is greatly affected by the ambient temperature. In order to ensure the normal pressure ratio of the refrigeration unit cycle, the general refrigeration unit limits the ambient temperature used. The ambient temperature is generally in the range of 0°C to 43°C. If the temperature is too low or too high, the refrigeration unit will generate high-pressure alarm and low-pressure alarm, which causes the problem that the air-cooled condenser type refrigeration ...

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Problems solved by technology

Moreover, long-term operation in extreme conditions will reduce the service life of the unit and reduce the energy efficiency of the unit.

[0003] Experiments have proved that in the case of high ambient temperature, increasing the heat exchange area and increasing the air volume have no obvious effect on reducing the condensation temperature, and both will cause a substantial increase in cost. High air volume will cause the condensation temperature to be too low under low ambient temperature conditions, making the system unable to operate normally

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