EXERGY ANALYSIS OF PRE-COOLED LINDE SYSTEM FOR LIQUEFACTION OF GASES FOR IMPROVING PERFORMANCE OF LINDE BASED CRYOGENICS SYSTEMS

Devender Kumar, R.S Mishra

Abstract: Cryogenic temperature generally temperature below the -150oC .Various number of gases are liquefy by using very first Linde Hampson cycle but due to inefficiency of system output of liquefaction mass is very low as compared to expanses. Linde Pre-cooled system is designed to meet the gap in the basic Linde system. The output as well as the second law efficiency of Linde pre-cooled system is more than the basic Linde system. A complete thermo –analysis of pre-cooled Linde system is carried out and various results are predicted. The effect of some various parameters like refrigerant mass flow ratio and compressor pressure on system with six different gases is studied by applying computational numerical technique. Effect of these parameters on system conclude that the system work good near 200 bar pressure and refrigerant mass flow ratio of 0.03 is suitable for system showing high second law efficiency and Liquefaction mass ratio and low work done per liquefaction mass ratio.

Keywords: Thermodynamics analysis, pre-cooled Linde system, refrigerant mass flow ratio, second law efficiency

DOI: https://doi.org/10.15623/ijret.2014.0304164