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In actual operation, because the ambient temperature and the temperature of the chilled water outlet are different, the cooling capacity of the industrial chiller and the power consumption of the compressor also vary. Whether it is an air-cooled industrial chiller or a water-cooled industrial chiller, its cooling capacity increases as the temperature of the chilled water outlet increases, and decreases as the ambient air temperature increases.
Why is there such a situation? This is because when the temperature of the effluent water rises, the evaporating pressure of the corresponding industrial chiller increases, the suction ratio decreases, the volumetric capacity and the cooling capacity of the industrial chiller both increase; when the ambient temperature increases, the industrial cold water The condensing pressure in the refrigerating system of the machine is increased. Since the evaporating temperature is constant, its suction specific volume remains unchanged. The compressor gas transmission coefficient of the chiller decreases, and the unit mass cooling capacity decreases. Therefore, the cooling capacity of the industrial chiller is reduced. It also decreases.
The power consumption of an industrial chiller increases with the increase of the chilled water outlet temperature and increases with the increase of the ambient temperature. This is due to the fact that when the chilled water temperature of the chiller increases, the evaporating pressure increases, if the ambient temperature is constant (ie, the condensing temperature The pressure is constant), the compression ratio is reduced, and the power consumption is reduced. However, at this time, the power required for the increase of the cooling capacity of the industrial chiller is greater, so the total power consumption of the compressor is still increased.
If the ambient temperature increases, the condensing pressure increases, and the chilled water outlet temperature of the industrial chiller remains constant (ie, the evaporating pressure does not change). At this time, the compression ratio increases and the power consumption increases. The power required for reducing the cooling capacity is therefore slightly lower. There is a reduction, but the total power consumption of the compressor is still increasing.
Does the chilled water outlet temperature of an industrial chiller affect unit performance?
We often talk about the cooling capacity of a chiller. In fact, the nominal cooling capacity of an industrial chiller refers to the cooling capacity when the ambient temperature is 35°C and the chilled water outlet temperature is 7°C.