Compressor

Model interface of Compressor

This component models a compressor that compress an inlet flow, between MinFlowrate and MaxFlowrate, using electricity.

Fig. 54 I/O Compressor

The default model calculated the electrical consumption based on the following formula:

\[P=\frac{1}{\eta_is}.n.\dot{m}.c_p.T_1.(\tau^(frac{\gamma-1}{\eta.\gamma})-1)\]

It requires:

• the motor efficiency multiplied by the isentropic efficiency \(\eta_is\),

• the number of compressor stages \(n\),

• the mass flow rate \(\dot{m}\),

• the heat capacity \(c_p\),

• the inlet temperature \(T_1\),

• the isentropic coefficient \(\gamma\)

Additionally, there is a polytropic model that requires polytropic efficiency and polytropic coefficient.

Losses can be considered.

Expressions table of Compressor

See also Expressions table of TechnicalSubModel for generic options

Table. 18 Compressor

Expression name	Unit	Mandatory	Description
UsedPower	FluxUnit	true	Computed power used by the compressor
InMassFlowRate	FluxUnit	true	input flow compressed by the compressor
OutMassFlowRate	FluxUnit	true	output flow compressed by the compressor, can be different from input flow if losses are considered
Pressure_out	PotentialUnit	true	Pressure at the exit of the compressor
Steam	FluxUnit	mUseSteamMap	quantity of steam input in the compressor
TemperatureIn	degC	mUseVariableTIn	Temperature before compression

Model variables of Compressor