THEORY

 

A refrigeration cycle is work to lower and maintain the temperature of a controlled space by heat transfer from a low to high temperature region.

 

High temperature reservoir, TH

 

 

 

 

Q_H

 

                                                                   W_net  

 

 

 

 

Q_L

 

	Low temperature reservoir, TL

 

 

 

 

 

Refrigeration is another term for the cooling effect of the refrigeration system, which is the rate of heating being removed from low temperature region with specified evaporator and condensation temperatures. The unit “duty” measurement is in the watts (for 1 ton of refrigeration = 351 W)