Refrigeration Cycle Calculator

Calculate COP, EER, SEER, and Carnot efficiency for refrigeration and heat pump cycles.

Actual COP
--
Coefficient of Performance
EER
--
BTU/Wh
Estimated SEER
--
BTU/Wh (seasonal)
Carnot COP
--
max theoretical
Carnot Efficiency
--
% of ideal
Heat Rejected
--
BTU/hr
kW per Ton
--
kW/ton

Refrigeration Cycle Efficiency

COP (cooling) = Q_evap / W_compressor

COP (heating) = Q_cond / W_compressor = COP_cooling + 1

EER = COP x 3.412 (BTU/Wh)

Carnot COP (cooling) = T_evap / (T_cond - T_evap) [absolute temps]

  • COP: Ratio of useful energy output to work input
  • EER: Energy Efficiency Ratio in BTU per watt-hour at a single condition
  • SEER: Seasonal Energy Efficiency Ratio averaged over a cooling season
  • Modern residential ACs typically have SEER 14-25

Verwandte Rechner

Compressor Calculator

Compressor sizing.

Refrigerant Charge Calculator

Charge amounts.

Chiller Sizing Calculator

Chiller tonnage.

Heat Exchanger Calculator

Heat transfer.

Cooling Tower Calculator

Tower sizing.

Cooling Load Calculator

BTU/hr load.