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What Is The Effect Of The Chilled Water Outlet Temperature Of The Chiller On The Unit?

Dec 21, 2019

What is the effect of the chilled water outlet temperature of the chiller on the unit?


The cooling capacity of the chiller is actually the cooling capacity when the ambient temperature is 35 ° C and the chilled water outlet temperature is 7 ° C. In the process of use, many factors will affect the normal operation of the chiller. To ensure the long-term stable operation of the chiller, it is necessary to understand which problems will affect the equipment. So, what effect does the chilled water outlet temperature of the chiller have on the unit?


What effect does the chilled water outlet temperature of the chiller have on the unit? In actual operation, because the ambient temperature and the chilled water outlet temperature are different, the refrigeration capacity of the chiller and the power consumption of the compressor also change. No matter it is an air-cooled chiller or a water-cooled chiller, the cooling capacity of the air-cooled chiller is added with the progress of the chilled water outlet temperature, and is reduced with the progress of the ambient air-cooled chiller's wind temperature.


Why is this happening? This is because when the chilled water outlet temperature increases, the corresponding chiller's transpiration pressure improves, the suction specific volume decreases, and the unit volume cooling capacity and chiller cooling capacity increase; when the ambient temperature As the hour progresses, the condensation pressure of the cold-air-cooled chiller in the chiller refrigeration system improves, because the transpiration temperature does not change, and the suction specific volume of the air-cooled chiller also persists. Reduction, the cooling capacity per unit mass is reduced, so the cooling capacity of the chiller is also reduced.


The power consumption of the chiller is added with the progress of the chilled water outlet temperature and with the progress of the ambient temperature. This air-cooled chiller is because the transpiration pressure of the chilled water is improved when the chilled water temperature of the chiller is increased. (That is, the condensing pressure is not changed), the compression ratio is reduced, and the power consumption is reduced. However, at this time, the power required for adding the cooling capacity of the chiller is greater, so the total power consumption of the compressor is still added.


If the ambient temperature improves and the condensing pressure improves, the chilled water outlet temperature of the chiller will not change (that is, the transpiration pressure will not change). At this time, the compression ratio will increase and the power consumption will increase. Then the power required for the cooling capacity reduction will be slightly. Reduced, but the total power consumption of the compressor is still increased.