In HYSYS, how is the power of a compressor defined?

2009-03-03View Original

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In HYSYS, how is the power of a compressor defined?

Reply #22009-03-03

Define ENERGY STREAM, and then define efficiency and power (DUTY).

Reply #32009-03-04

Efficiency is defined as adiabatic efficiency; if it operates at 90% of its power, does that mean 90% should be entered there?

Reply #42009-03-04

The statement seems a bit problematic. The adiabatic efficiency is just that – the adiabatic efficiency – it’s not operating at 90% of the power. If the power is known, enter it in ENGER STREAM. If the adiabatic efficiency is known, such as 80%, then enter 80% in the adiabatic efficiency field. Note that if the compressor is a multi-stage compressor, you need to enter the power and efficiency for each stage.

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