Air-Conditioning and Refrigeration

Some tips that are frequently used in air-conditioning and refrigeration:

- One Ton of Refrigeration (TR) is equal to : 
                            3024 Kcal / h, 
                            3.51 kW or 
                            12000 Btu/ h

- COP (Coefficient of Performance)

COP is called Coefficient of Performance which is a standard method of measuring refrigeration efficiency of an ideal refrigeration system which depends on two key system temperatures, namely, Evaporator temperature Te and Condenser temperature Tc :

= COP => Te / Tc - Te

COP of air cooled chiller < COP of water cooled chiller

COP of air cooled chiller can be improved by adiabatic cooling/ fogging system - this process cools the condenser tubes thereby reducing compressor work (energy consumption).

- Relation between COP, kW/TR and EER

 1) kW/TR  = 3.516/COP

 2) kW/TR  = 12/ EER

 3) COP      =  0.293 * EER or

     EER      =  3.413* COP

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