Fluid in the throttle too cold, in general, to improve the economic performance of the chiller refrigeration cycle is always favorable, but will increase the equipment investment and direct operating costs. Actual use, but also to consider the specific conditions for technical and economic analysis to determine whether the use of liquid is too cold.
The determination of the liquid cooling temperature before the throttling of the industrial chiller can be selected according to the following experience.
In the single stage compression system, the liquid before throttling is realized in the gas liquid heat exchanger, and the average temperature is 5 degrees centigrade. In the two-stage compression system, the liquid is generally two times too cold. The first is in the middle of the cooling in the cold, and then in the gas - liquid heat exchanger in the cold. The liquid temperature of the cooling coil of the intermediate cooler is higher than that of the double stage compression intermediate temperature 5 to 7 degrees Celsius, and the liquid in the gas liquid heat exchanger is 5 degrees Celsius.