Manufacturing: paint-booth exhaust heat to 70°C wash water
Illustrative low-lift heat pump recovering booth exhaust to supply parts wash water.
Engineering data
Project background
An automotive supplier exhausted warm booth air while purchasing electric or gas heat for wash lines.
Source / inputs
Source: filtered exhaust air ~28–35°C equivalent. Sink: wash water 65–70°C. Duty: ~350 kW.
Heat pump solution
Air-to-water heat pump with glycol coil recovery and fouling-tolerant exchangers; weekend setback strategy.
COP & savings
Illustrative COP 3.0–3.6; strong when booth runs two shifts.
Investment / ROI notes
Payback often <4 years where electricity is competitive and booth runtime is high.