IBV Inlet butterfly valve. These are fitted on the inlet of most types of compressor and the valve opens and closes to throttle the air flow. However, the term IBV is usually associated with turbo compressors.
Ideal gas Is a gas that follows the perfect gas laws without deviation.
There is no such thing, however it is the basis from which calculations are made and corrections applied. The condition when a perfect gas is isentropically compressed, and the gas inlet temperature and also the amount of work spent is the same for each stage. IGV Inlet guide-vane valve. Effectiveness, when used with multi-stage centrifugal air compressors, degrades rapidly. Immiscible Incapable of being mixed without separation phases.