Condenser heat rejection calculator

Condenser heat rejection is calculated as q_cooling + 3412 × P_compressor. Use the stated system boundary and matching input units.

Units

q_{\text{reject}} = q_{\text{cooling}} + 3412 \times P_{\text{compressor}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

q_{\text{reject}} = 1{,}200{,}000 + 3412 \times 70 = 1{,}438{,}840

Symbol	Meaning	Unit
$q_{\text{reject}}$	condenser heat rejection	Btu/h
$q_{\text{cooling}}$	evaporator cooling capacity	Btu/h
$P_{\text{compressor}}$	compressor electrical input	kW

Symbol	Meaning	Unit
$q_{\text{reject}}$	condenser heat rejection	kW
$q_{\text{cooling}}$	evaporator cooling capacity	kW
$P_{\text{compressor}}$	compressor electrical input	kW

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.