The methods for improving second law efficiency have been considered in this paper by using liquid vapour heat exchanger is investigated in this paper. Detailed energy and exergy analysis of multi-evaporators at different temperatures with single compressor and single expansion valve using liquid vapour heat exchanger vapour compression refrigeration systems have been done in terms of performan...

A performance analysis on a vapour compression refrigeration system with various eco-friendly refrigerants of HFC152a, HFC32, HC290, HC1270, HC600a and RE170 were done and their results were compared with R134a as possible alternative replacement. The results showed that the alternative refrigerants investigated in the analysis RE170, R152a and R600a have a slightly higher performance coefficie...

Abstract With global warming and climate change, the world is experiencing a steady temperature rise. Hence need for effective efficient air conditioning, cooling refrigeration systems higher than ever. One of key elements influencing system performance working fluid. From 2022, new in UK must not use fluids with potential (GWP) above 150. Widely used R134a, GWP 1430, therefore being banned sui...

In this work a previous steady-state model [1] of a hermetic reciprocating compressor has been improved using an unsteady-state analysis of the compression cycle which allows a direct computation of the heat, work and mass flow rates. The new model requires the geometry of the machine, refrigerant inlet temperature and pressure, vapour discharge pressure, electric and mechanical efficiencies as...

Due to the entry into force in 2014 of European F-Gas Regulation n° 517/2014 and subsequent Kigali amendment, phase-out medium high-GWP refrigerants has speeded up all refrigeration fields. The effect on plug-in or stand-alone systems meant that other environmentally friendly must replace R134a with low ultra-low GWP maintaining same operating conditions reducing energy consumption. Extended ex...

Global warming is one of the most pressing issues world facing today. The refrigeration sector, major contributors to global warming, needs follow a methodological approach address this issue. This paper evaluates overall impact along with thermodynamic performance different generations refrigerants in cascade system. main aim comparative study present comprehensive outlook on environmental ref...