Many fluids of hydrocarbon derivatives were used as working fluids in refrigeration and air conditioning during the past few decades. The phase out of chlorofluorocarbons and hydrochlorofluorocarbons has initiated research on finding an alternative working fluid for the existing. In this article, some working fluids with zero ozone depletion potential have been assessed for their suitability as...

In this paper, a first- and second-law analysis of vapor compression refrigeration is presented to estimate propose the replacement R134 with working fluids having less global warming potential (GWP) exergy destruction irreversibilities. Six different refrigerants were studied, namely, R717, R1234yf, R290, R134a, R600a, R152a. A thermodynamic model was designed on Engineering Equation Solver (E...

Refrigeration oil and other materials used with refrigerant for refrigerators or air conditioners should have thermal and chemical stability to maintain the system reliability. Some kinds of synthetic oil are used for alternative refrigerant, HFC’s and hydrolysis, material compatibility, and low-temperature extraction of contaminant or sludge are important subjects. Much more numbers and times ...

In year-round hot climatic conditions, conventional air conditioning systems consume significant amounts of electricity primarily generated by power plants. A compression-assisted, multi-ejector space cooling system driven low-grade solar thermal energy is investigated in terms and exergy performance, using a real gas property-based ejector model for 36 kW-scale application, exposed to annually...

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 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...