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http://dx.doi.org/10.5916/jkosme.2011.35.2.216

Numerical Analysis for the Internal Flow of Thermal Vapor Compressor with real gas equation of state  

Kang, Wee-Kwan ((주) Fluid & Thermal Engineering)
Choi, Du-Yeol ((주) Fluid & Thermal Engineering)
Shin, Jee-Young (동의대학교 기계공학과)
Kim, Moo-Geun (인제대학교 기계자동차공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.35, no.2, 2011 , pp. 216-223 More about this Journal
Abstract
TVC is a kind of ejector which entrains low pressure working fluid by using the high pressure working fluid. While most papers relating with ejectors treat the working fluid as an ideal gas for convenience, the fluid doesn't behave as the ideal gas when phase change occurs. In this study, numerical analysis is conducted by applying Redlich-Kwong equation of state instead of ideal gas equation of state. Two turbulent models are compared for the better prediction and SST k-${\omega}$ model is preferred rather than realizable k-${\epsilon}$ model by comparison. Energy loss at the diffuser inlet and throat using the real gas equation of state is relatively greater than that using ideal gas law. For the real gas case, pressure increase due to shock train at the diffuser outlet is relatively smaller than the ideal gas case, but both cases have the same pressure increase due to a pseudo shock.
Keywords
Thermal vapor compressor; Real gas model; Redlich-Kwong equation of state; Ejector;
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