turbocharging an engine boosts its power by increasing the amount of input air. this task is accomplished by using the exhaust gas to power a turbine which is engaged with a compressor. the variable geometry turbocharger, vgt is a unique turbocharger that the diffuser vane angle can be changed over a wide range of positions. the mathematics of turbomachinery flow analysis is intensive and uses ...

Variable-speed centrifugal compressors are used in a wide variety of industries and applications, including natural gas pipelines and processing plants, oil refineries and chemical plants, air-separation units, refrigeration and air conditioning equipment refrigerant cycles, gas turbines and auxiliary power generators, and many more. Some natural gas plants, for example, employ a propane-precoo...

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In accordance with worldwide consensus, the use of chlorofluorocarbons, which play an important role in damaging the ozone layer, should be completely abolished by the end of 1995. This provided the impetus for developing the three vane rotary compressor. Formerly CFC-12 was used as the refrigerant in automotive air conditioners, until HFC-134a was substituted for CFC-12. In response to the cha...

This paper shows an improvisation for gas turbine power plants. It incorporates a hydraulic compressor to compress air prior to combustion. The aim is to reduce in-house consumption of the power generated in the turbine, thus increasing the overall efficiency of the power plant. The proposed compressor could also be used in different scenarios.

A dynamic model of a centrifugal compressor capable of system simulation in the virtual test bed (VTB) computational environment is presented. The model is based on first principles, i.e. the dynamic performance including the losses is determined from the compressor geometry and not from the experimentally determined characteristic performance curves. In this study, the compressor losses, such ...

H. Doyle Thompson Dept. of Mechanical Engineering Purdue University W. Lafayette, IN 47907 .(317) 494-5624 Heat transfer to the suction gas in a hermetic compressor is known to have adverse effects on compressor performance. This can be explained in an overall sense by thermodynamic cycle analysis. The extent of suction gas heated. inside the compressor and the areas in which this heating occur...

The Boil-off Gas ( BOG ) compressor is used as a key facility in the liquefied natural gas ( LNG ) terminal, to recycle the excessive boiled gas for re-liquefaction or direct application. The low suction temperature down to -162°C brings about big challenges in design of the BOG compressor. In this paper, the three-dimensional finite element model was used to simulate both the static and period...