Chiller capacity

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