Hydraulic Separators Selection Comments:
Relations:
CAUTION: Total pump output in the heating circuit must be lower than the total pump output in the boiler system. The difference must be at least 10%.
Quantities and units:
PK kW – heat output
QK m3/h – nominal flow rate table
ΔTK K – differential temperature for medium supplied and discharged from the hydraulic separator on the boiler system side
ρ kg/m3 – water density at max. medium temperature
cp kJ/kg K – water specific heat at max. medium temperature, hydraulic separator outlet
Volume and specific heat for different water temperatures
To connect the boiler circuit and the heating circuit, select the hydraulic separator based on the following data:
Data:
PK = 130 kW boiler system heat output
T1 = 90 ºC supply water temperature, boiler system
T2 = 70 ºC return water temperature, boiler system
Procedure:
SP, SPP or SPD data sheet or
Specifications / Nominal flow rate table
– nominal hydraulic separator diameter: DN65
Specifications / Type table
– hydraulic separator type: SP 65/150, SPP 65/200 or SPD 65/200
SP 65/150 – hydraulic separator
SPP 65/200 – hydraulic separator with reduced port centres
SPD 65/200 – hydraulic separator with adjustable port centres