The cooling effect produced is quantified as tons of refrigeration.(TR).
1 TR of refrigeration = 3024 kCal/hr heat rejected.
The refrigeration TR is assessed as
1 TR of refrigeration = 3024 kCal/hr heat rejected.
The refrigeration TR is assessed as
TR = Q x Cp x (Ti – To) / 3024
Where,
Q is mass flow rate of coolant in kg/hr
Cp is coolant specific heat in kCal /kg deg C
Ti is inlet, temperature of coolant to evaporator (chiller) in 0C
To is outlet temperature of coolant from evaporator (chiller) in 0C.
The above TR is also called as chiller tonnage. The specific power consumption kW/TR
is a useful indicator of the performance of refrigeration system. By measuring refrigeration duty performed in TR and the kilowatt inputs, kW/TR is used as a reference energy performance indicator.
Where,
Q is mass flow rate of coolant in kg/hr
Cp is coolant specific heat in kCal /kg deg C
Ti is inlet, temperature of coolant to evaporator (chiller) in 0C
To is outlet temperature of coolant from evaporator (chiller) in 0C.
The above TR is also called as chiller tonnage. The specific power consumption kW/TR
is a useful indicator of the performance of refrigeration system. By measuring refrigeration duty performed in TR and the kilowatt inputs, kW/TR is used as a reference energy performance indicator.