Basis of calculation
Determine energy demand Q [kW]
Determine temperature differential (supply – return) ΔT [K]
Calculate volumetric flow
Hint: you can also determine the volumetric flow using the valve slide rule.
Select suitable PICV
Determine dial setting using volumetric flow/dial presetting table, cf. Volumetric flow/dial presetting
Given is a heat exchanger with:
Energy demand: Q = 1.9 kW
Temperature differential: ΔT = 6 K
The valve shall have connections with external threads to ISO 228-1 and size DN 15.
Volumetric flow: 270 l/h
Dial setting: 2.6