Industrial Heat Pumps & Electrified Thermal Systems worked example

Compressor Test Capacity at 99% expected test stand uptime: a worked example

What does the result look like when expected test stand uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when a manufacturing engineer or production supervisor needs to know if compressor test benches can keep up with heat pump assembly, validation builds, or service spare demand.

The inputs for this scenario

  • Compressors completed per test cycle: 2 compressors / cycle (unchanged)
  • Available compressor test cycles: 36 cycles (unchanged)
  • Expected test stand uptime: 99 % (raised for this scenario; the documented default is 88)
  • First-pass compressor release yield: 94 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross compressor test capacity = compressors completed per test cycle × available compressor test cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 67 compressors for accepted compressor test capacity, the number this scenario is built around.
  • At this operating point the engine returns 72 compressors for gross compressor test capacity.
  • At this operating point the engine returns 0.72 compressors for compressor test stand downtime loss.
  • At this operating point the engine returns 4.28 compressors for compressor retest and rejection loss.

How this compares with the baseline

  • Against the tool's baseline example, where expected test stand uptime sits at 88% and the headline result is 59.56 compressors, this scenario comes in 12.5% above the baseline at 67 compressors.
  • A figure at this level is achievable when expected test stand uptime is genuinely sustained, not just peaked for a shift. It treats uptime and yield as flat averages, so it will overstate capacity if downtime clusters or if a bad component batch tanks first-pass yield for a shift.

Results at a glance

  • Accepted compressor test capacity: 67 compressors (headline result)
  • Gross compressor test capacity: 72 compressors
  • Compressor test stand downtime loss: 0.72 compressors
  • Compressor retest and rejection loss: 4.28 compressors

Run it with your numbers

  • Every input above is editable in the live Compressor Test Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.