Positive Displacement Compressor
Positive Displacement compressors/blowers can be considered to provide a fixed flow for steady state analysis. The positive displacement compressor/blower allows for a fixed flow to be defined in a straightforward manner.
To model a positive displacement compressor/blower, select the Positive Displacement option on the Compressor Model tab of the Compressor/Fan Properties window.
Parameter
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Volumetric Flow Rate - Fix the volumetric flow rate through the compressor/blower.
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Mass Flow Rate - Fix the mass flow rate through the compressor/blower.
Fixed Condition
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Fixed Flowrate - The value and unit of the fixed flow amount.
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Nominal Efficiency - A fixed efficiency, useful to calculate power requirements. The positive displacement compressor thermodynamics will be treated as adiabatic regardless of the defined efficiency value.
Figure 1: Positive Displacement Compressor/Blower Model
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