.ThermoCycle.Components.Units.ExpansionAndCompressionMachines.Compressor_EN12900

Information

The Compressor_EN12900 model represents the compression of a fluid in a scroll compressor according to standard EN12900. It is a lumped model. It is characterized by two flow connector for the fluid inlet and outlet and by a mechanical connector for the connection with the electric driver.

The assumptions for this model are:

• No dynamics ( it is considered negligible when compared to the one characterizing the heat exchanger).
• No thermal energy losses to the environment
• Mass flow and consumed power are calculated with a polynoms as a function of the saturation temperature of the corresponding inlet and outlet temperature

Modelling options

In the General tab the following option is availabe:

• CPmodel: it allows to select one of the different available scroll compressor characteristics.

Polynomial expression

In the EN12900 standard, the compressor consumption and the mass flow rate are expressed as a function of the evaporation and condensation temperatures with the following equations:

Contents

Name	Description
Medium	Medium model
CPmodel	Compressor Model - only valid for one particular working fluid!