International Journal of Research in Engineering and Innovation Vol-1, Issue-4 (2017), 111-125 __________________________________________________________________________________________________________________________________ International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com ISSN (Online): 2456-6934 ________________________________________________________________________________________ Corresponding author : R.S. Mishra 111 Email Id: rsmishradtu@gmail.com Energy-Exergetic performance and parametric evaluation of Haylent liquefaction system using different gasses system R.S. Mishra, Devender Kumar Department of Mechanical, Production and Automobile Engineering, Delhi Technological University, Delhi, India _______________________________________________________________________________________ Abstract The present studies concern on energy and exergy analyses of various cryogenics system up to their sub component level. A parametric study is conducted to investigate the effects of variation of various system input parameters such as pressure ratio, expander mass flow ratio, compressor output temperature on different performance parameters like COP , work input ,liquefaction rate ,specific heat and exergy. The numerical computations have been carried out for six system are study with six different gases for liquefaction like oxygen, argon, methane, fluorine, air and nitrogen respectively. Effect of different input gas also studies carefully and behavior of different gases in different system is concluded. © 2017 ijrei.com. All rights reserved Keywords: Energy-Exergetic Performance, Parametric Evaluation, Haylent liquefaction system _____________________________________________________________________________ 1. Introduction Cryogenics has been an important area of refrigeration because of its application in industrial and commercial utilization, and many scientific and engineering researches are going on by using low temperature liquefied gases. Cryogenics isa branch of physics which deals with the achieving very low temperatures (below the 173 K.) and study their effects on matter .Cryogenic study presents broad goals for cryogenic support for various gas liquefaction systems. Due to industrial revolution, various issues like cost, efficiency and reliability are the challenges factors in employment of cryogenic support technology. In field of mechanical engineering we try to refine or improve the ability or quality of material to get in maximum use at maximum level at a reduce cost. In past many fantasticclaimhave been made as to the degree of improve performance achieved by employing cryogenics technology In 1949 Helandt Davies in his research noticed that if the Claude system work on relative high pressure,e.g., approx. 200 bar for air liquefaction. The first heat exchanger in the system can eliminate; such modified system is extensively used in high-pressure liquefaction plant of air and known as high pressure modifiedClaude system or Haylent system. The problem of lubrication in expander is successfully eliminated in this modification. Use of light lubricant are quite suitable because, in the air-liquefaction system, the gas enters the expander at ambient temperature and leaves the expander at approximately 150 K (-190°F), so that light lubricants properties not much detroit. In high pressure Haylent system expander adjustment is also very crucial. All sub-component like compressor, expander, two heat exchangers with throttle valve and separator are arranged as shown in Figure .1.The block diagram completely define the working of system. The gas which has to be liquefied is fed in compressor at ambient condition like at 1.013 bar and 300 K .The gas is compressed up to their optimized pressure ratio selected on the basis of chosen gas. This compressed gas is further divided in two parts in perfect ratio for expander. One part of gas goes into expander while other part fed into the heat exchanger as a hot stream. Expander gives additional refrigeration effect in the system by giving additional cooling effect to the cold stream of gas into exchanger. After passing through the heat exchanger gas reached up to their critical temperature.