Circulation Pump Calculator

HWR-PS · DOMESTIC HOT WATER RECIRCULATION

Estimate circulation flow, total dynamic head, pipe heat loss and duty point for a hot water recirculation pump.

Building Type

Total recirculation pipe length: 85 m

Pipe nominal size

Pipe material

Insulation thickness

Hot water supply temp: 60 °C

Allowable return ΔT: 5 °C

Ambient temp around pipe: 27 °C

Fittings equiv. length: 30%

Valve / device loss: 1.5 m

Design safety factor: 20%

Add 15% heat loss allowance for exposed valves & fittings

Circulation Flow

0L/min

Total Dynamic Head

Pipe Heat Loss

Flow Velocity

0m/s

Indicative sizing only - verify against manufacturer pump curves and applicable local codes before final specification.