Industrial Heat Pumps & Electrified Thermal Systems worked example

Heat Exchanger Yield at 69% target heat exchanger yield: a worked example

Suppose target heat exchanger yield falls to 69%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate first-pass heat exchanger yield and the gap to target for coils, plate exchangers, condensers, evaporators, and process heat recovery exchangers.

The inputs for this scenario

  • Accepted heat exchangers: 186 exchangers (held at the documented default)
  • Total heat exchangers tested: 200 exchangers (held at the documented default)
  • Target heat exchanger yield: 69 % (the input this scenario stresses; the baseline uses 96)

Working through the calculation

  • The calculation starts from the formula this tool documents: Heat exchanger first-pass yield = accepted heat exchangers ÷ total heat exchangers tested × 100.
  • Heat exchanger first-pass yield works out to 93 % at these inputs, and this is the headline figure for the scenario.
  • Heat exchanger yield gap to target works out to -24 points at these inputs.
  • Accepted heat exchangers works out to 186 count at these inputs.
  • Total heat exchangers tested works out to 200 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target heat exchanger yield sits at 96% and the headline result is 93 %, this scenario lands almost exactly on the baseline at 93 %.
  • It computes first-pass heat exchanger yield as accepted over total tested, then reports the signed gap to your target in percentage points. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Heat exchanger first-pass yield: 93 % (headline result)
  • Heat exchanger yield gap to target: -24 points
  • Accepted heat exchangers: 186 count
  • Total heat exchangers tested: 200 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Heat Exchanger Yield calculator, set target heat exchanger yield to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.