Simulation of 1610 Helium Liquefier

Abstract

Cryogenics is generally described as the science and technology of producing low temperature environment. The various cryogenic cycles such as Collins cycle, Linde cycle etc. govern the liquefaction of various industrial gases, namely, helium, nitrogen etc. In this project work, helium liquefier has been simulated with the help of the simulation tool Aspen hysys and simulation work is carried out at steady state using MBWR (Modified Benedict–Webb–Rubin) equation of state in order to get the desired output. The present analysis is carried out to assess the role of different component efficiencies in predicting overall system efficiency at the design and off design conditions. In this analysis, the temperature is assumed to evaluate the expander efficiency and heat exchanger effectiveness in order to optimize the plant efficiency. The evaluated thermodynamic parameters are obtained and the optimum mass fraction through expander for maximum liquid yield is calculated.