• R516A, R513A, and R1234yf are compared as alternatives to R134a. The first experimental results of the R516A blend presented. R513A presents highest overall system performance by enhancement 2% in cooling mode. In mode, shows COP at low evaporating temperatures ranging from (1 15%). This work an comparison for GWP refrigerants used vapour compression heating systems. study compares three lowe...

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...

In this study, we evaluated the performance of low Global Warming Potential (GWP) refrigerant R1234yf on activated carbon (MSC-30) for adsorption heating applications. The isotherms MSC-30/R1234yf were measured using a constant-volume–variable-pressure (CVVP) method from very relative pressure to practical operating ranges. data fitted with several isotherm models non-linear curve fitting. An i...

In this work, a novel dual-nozzle ejector enhanced triple-evaporator refrigeration cycle (DETRC) without separator is proposed to improve the performance of the conventional ejector one (CETRC). The performance of DETRC is analyzed and compared with CETRC in term of energy coefficient of performance (COPen). Under given operating conditions, the COPen improvement of the no...

A bench-top automobile air conditioning (AAC) system using a thermostatic expansion valve was developed. The equipped with coaxial internal heat exchanger (HEX) and charged R1234yf, new refrigerant used as an alternative to R134a. tested at the compressor speeds ranging between 1000 rpm 2600 increments of 400 rpm. For each speed, temperatures evaporator condenser inlets were concurrently change...

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...

Abstract Due to the growing demand for refrigerators and air conditioners in automobiles, there is a need an innovative efficient design achieve both refrigeration conditioning. To address this, present work has evaluated two-evaporator vapor compression system eliminate requirement separate conditioning units. Theoretical energy exergy performance assessment of same carried out along with vari...

In this paper, an experimental study of R1234yf replacing R22 in window air conditioning was carried out. The optimum types capillary tubes and the charge amount were obtained, system performance charged with tested conditioner teat facility under nominal high-temperature conditions. results revealed that cooling capacity coefficient (COP) 28.5% 11.1%, respectively, conditions, which lower than...

R1234yf is a synthetic HFO refrigerant co-developed as replacement for R134a in automotive air conditioning applications. Thus, this study, alternatives to the that were removed from newly produced devices examined. The performance of cooling processes and R744 gases was compared with R134a. A simulation model first developed. This validated experimental results. Analysis conducted both heating...