District Energy & Thermal Network Equipment worked example

Pipe Heat Loss with pipe heat-loss rate of 30 kW: a worked example

Push pipe heat-loss rate up to 30 kW and the picture changes. This example computes every intermediate figure at that operating point. Use it when pipe heat loss in district energy and thermal network equipment is being quoted and energy is a real chunk of the district energy and thermal network equipment cost stack.

The inputs for this scenario

  • Pipe heat-loss rate: 30 kW (raised for this scenario; the documented default is 12)
  • Network operating hours: 8 hr (unchanged)
  • Thermal energy cost basis: 0.12 $ / kWh (unchanged)
  • Pipe length or sections represented: 1,000 m, ft, or sections (unchanged)

Working through the calculation

  • Applying the documented formula (Pipe thermal energy lost = pipe heat-loss rate × network operating hours) to the inputs above produces each figure below.
  • At this operating point the engine returns 240 kWh for pipe thermal energy lost, the number this scenario is built around.
  • At this operating point the engine returns 28.8 $ for pipe heat-loss energy cost.
  • At this operating point the engine returns 0.03 $ / piece for heat-loss cost per length or section.
  • At this operating point the engine returns 3.6 $ / hr for hourly pipe heat-loss cost.

How this compares with the baseline

  • Against the tool's baseline example, where pipe heat-loss rate sits at 12 kW and the headline result is 96 kWh, this scenario comes in 150% above the baseline at 240 kWh.
  • It computes thermal energy lost from loss rate times hours, the cost of that loss at your rate, and the loss cost per length or section. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Pipe thermal energy lost: 240 kWh (headline result)
  • Pipe heat-loss energy cost: 28.8 $
  • Heat-loss cost per length or section: 0.03 $ / piece
  • Hourly pipe heat-loss cost: 3.6 $ / hr

Run it with your numbers

  • Every input above is editable in the live Pipe Heat Loss calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.