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18-06-08 PVD3668_GB_GVM_June_2018
3.6.5. Chiller selection
This section describes how to choose the chiller. The chiller is able to extract the heat from
the motor losses with the water circulation.
The motor losses (= power to extracted by the chiller) depend on the efficiency and motor
power :
With Pc : Power to evacuate by the chiller (kW)
Pn : Motor rated power (kW)
: Motor efficiency at rated power (%)
Refer to the respective torque motor data sheet for nominal power, efficiency and water flow.
Chiller pump must provide water flow through motor and pipe pressure drop. Inlet
temperature must be lower than 65°C.
Example
Motor : GVM210-050-QQW (see §3.2.1)
Rated power = 21.2 kW
Efficiency = 95,3%
Water flow = 1,51 l/min
1,04 kW
So, the chiller must extract 1,04 kW and have a water flow of 1,51 l/min for a
GVM210-050-QQW
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