UV Curing worked example

UV System Cooling Requirement with uv system electrical input of 40 kW: a worked example

What does the result look like when uv system electrical input reaches 40 kW? The full calculation is worked below with real intermediate numbers. Use it when laying out a new UV station's utilities - chiller GPM, exhaust CFM, ozone scrubber capacity - before the cell is ordered.

The inputs for this scenario

  • UV system electrical input: 40 kW (raised for this scenario; the documented default is 16)
  • Heat-to-cooling fraction: 0.7 x (unchanged)
  • System runtime fraction per hour: 1 hr / hr (unchanged)

Working through the calculation

  • Applying the documented formula (Estimated heat to remove (kW) = system input × heat-to-cooling fraction × runtime fraction) to the inputs above produces each figure below.
  • At this operating point the engine returns 28 BTU / hr (cooling) for total load, the number this scenario is built around.
  • At this operating point the engine returns 28 BTU / hr (cooling) / hr for hourly equivalent.
  • At this operating point the engine returns 40 BTU / hr (cooling) for input load.
  • At this operating point the engine returns 0.7 x for load factor.

How this compares with the baseline

  • Against the tool's baseline example, where uv system electrical input sits at 16 kW and the headline result is 11.2 BTU / hr (cooling), this scenario comes in 150% above the baseline at 28 BTU / hr (cooling).
  • A figure at this level is achievable when uv system electrical input is genuinely sustained, not just peaked for a shift. It gives a total heat-to-remove figure and does not split load between air and water paths, nor does it account for ambient temperature, ducting losses, or safety margin, which you should add separately.

Results at a glance

  • Total load: 28 BTU / hr (cooling) (headline result)
  • Hourly equivalent: 28 BTU / hr (cooling) / hr
  • Input load: 40 BTU / hr (cooling)
  • Load factor: 0.7 x

Run it with your numbers

  • Every input above is editable in the live UV System Cooling Requirement calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.