The chiller capacity is the amount of heat removed from the refrigerant in [kW]. The chiller capacity can be calculated by the evaporator differential temperature and chilled water flow or via an approximation formula using an electric meter, and/ or accessing the chiller values via an interface. The next table shows the calculation of the chiller capacity depending on the selected formula.
Table 3. Chiller capacity calculation
SYS-01 |
Capacity formula |
Chiller capacity |
0 |
chiller capacity |
ChillCapacity= CH-01 * (EnteringTemp - LeavingTemp) * Flow/ 1000 |
1 |
power meter |
ChillCapacity= CH-02 * ElectricPower / KW-01 |
Whereby
“LeavingTemp” = chiller leaving temperature [°C]
“EnteringTemp” = chiller entering temperature [°C]
Flow = actual flow [kg/s]
CH-01 = specific heat capacity of medium in [J/kgK] (default = water, 4184J/kgK)
“ElectricPower“ = power from an electric meter or the chiller via bus
CH-02 = chiller nominal capacity
KW-01 = chiller nominal electric power
Table 4. Parameter List
Description |
Value Range |
Default Value |
Unit |
CH-01: specific heat capacity of the medium |
0...99999 |
4184 |
- |
CH-02: chiller nominal capacity |
0...999999 |
10 |
kW |
KW-01: chiller nominal electric power |
0...999999 |
10 |
kW |