De superheater in Air Cooled Chiller

[NoNickName]

Desuperheater removes heat from superheated refrigerant gas after compression, but it does not remove enough heat to cause condensation of the refrigerant. The advantage is the relatively high temperature of the removed heat, the disadvantage is that the desuperheater is normally limited to 5-25% of total heat rejection.

[US Iceman]

As NoNickName stated the purpose of the desuperheater is to remove temperature from the gas stream.

NoNickName, nice to see you around here. How is your work progressing?

[Rabindra]

What is the advantage of de-superheating the hot gas when it would otherwise be cooled by air on the air cooled condenser any way especially when both heat is to be dissipated to the ambient air. I am assuming that the de-superheater would be in operation when the chiller is operated to cool.

Desuperheater removes heat from superheated refrigerant gas after compression, but it does not remove enough heat to cause condensation of the refrigerant. The advantage is the relatively high temperature of the removed heat, the disadvantage is that the desuperheater is normally limited to 5-25% of total heat rejection.