How to use the heat pump and refrigerator cop calculator
Compute ideal coefficient of performance for heating and cooling. Enter hot side, cold side in the fields above; the heat pump cop, refrigerator cop are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- Th — Hot side (K)
- Tc — Cold side (K)
Worked example
With hot side = 303 K, cold side = 273 K, the calculator gives heat pump cop ≈ 10.1; refrigerator cop ≈ 9.1.
Frequently asked questions
What is the formula for the heat pump and refrigerator cop calculation?
Heat pump COP = Th / (Th-Tc). Refrigerator COP = Tc / (Th-Tc). Here Th is hot side (K), Tc is cold side (K).
What inputs do I need for the heat pump and refrigerator cop calculator?
You need hot side in K, cold side in K. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.