MODELING OF GAS COOLING AND CONDENSATION IN A PISTON EXPANSION MACHINE
K. M. Aref'ev,a O. V. Belyaeva, b A. Zh. Greben'kov, b T. A. Zayats, b and A. A. Mikhalevichb UDC 533.24 A model of gas cooling and condensation in a piston expansion machine has been developed with allowance made for formation of nuclei of the liquid phase and growth of droplets as well as for real thermophysical properties. Internal heat release related to phase transition is taken into account in the adiabatic equation. The processes of cooling and liquefaction of methane in the piston expander are calculated for specific conditions. a State Polytechnical University, St. Petersburg, Russia; b Joint Institute of Power Engineering and Nuclear Research - Sosny, National Academy of Sciences of Belarus, 99 Academician Krasin Str., Minsk, 220109, Belarus; email: greb@sosny.bas.net.by. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 77, No. 5, pp. 52-59, September-October, 2004. Original article submitted December 30, 2003.