Results 11 to 20 of about 1,638 (192)
Energy Science & EngineeringThis paper proposes an ejector‐expansion refrigeration cycle (EERC) with two evaporating temperatures to recover partial expansion work and greatly reduces the throttling loss of the other expansion valve connected to the evaporator compared with the ...
Xiaoqin Liu, Weibin Wang, Jianyong Wang
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Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf [PDF]
Zhileng xuebaoTo meet the need for energy efficiency improvement and substitution of traditional refrigerants in the field of supermarket refrigeration, a supermarket booster refrigeration system using the eco-friendly zeotropic refrigerant CO2/R1234yf is proposed in ...
Hua Xue +3 more
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Research on the Flammability Limits of R1234yf/R290 and R1234ze(E)/R290 Mixtures
Zhileng xuebaoPropane (R290) is a potential refrigerant substitute for household air conditioners. However, its flammability limits its application. In this study, the flammability limits of R290, 2,3,3,3-tetrafluoropropene (R1234yf), trans-1,3,3,3-tetrafluoropropene (
Shen Jun +5 more
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Experimental Study of PVTx Properties about Mixture Refrigerant R1234yf/R32
Zhileng xuebao, 2016 In order to get the thermophysical properties of mixed refrigerants R1234yf/R134a, the PVT properties of mixture refrigerant R1234yf/R32 with mass fraction 15%/85%, 25%/75% in the range of 253-313 K were measured by using high-precision PVTx apparatus ...
Chen Rishuai, Qi Yingxia, Wu Dong
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Energy and exergy investigations of r1234yf and R1234ze as R134a replacements in mechanically subcoo
Journal of Thermal Engineering, 2021 The aim of present work is the evaluation of mechanically subcooled simple vapour compression refrigeration system on the basis of energy and exergy analysis, and compatibility of alternative low GWP and zero ODP HFOs R1234yf and R1234ze to replace HFC ...
Shyam AGARWAL +2 more
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The Analysis of Next-Generation Refrigerants in Terms of Energy, Exergy, and LCCP Perspective
Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2023 In this study, commonly used hydrofluorocarbon (HFC)-based refrigerants R404A and R410A, as well as hydrofluoroolefin (HFO)-based environmentally friendly next-generation refrigerant R1234yf with a low global warming potential (GWP), were analyzed in ...
Merve Özer +3 more
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Case Studies in Thermal Engineering, 2020 R134a, one of the most commonly used refrigerants especially for air conditioning (AC) systems, will be banned in automotive air conditioners after 2022 due to a high global warming potential (GWP).
Xinwen Chen +5 more
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Energies, 2023 Organic Rankine cycles (ORCs) have been widely used to convert medium-low-temperature geothermal energy to electricity. Proper cycle layout is generally determined by considering both the thermo-physical properties of the working fluid and the geothermal
Qiang Liu +3 more
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Experimental Study of PVTx Properties of Mixture Refrigerant R1234yf/R134a
Zhileng xuebao, 2016 In order to get the thermophysical properties of mixed refrigerants R1234yf/R134a, the PVT properties of mixture refrigerant R1234yf/R134a with mass fraction 55%/45%, 50%/50%,45%/55% in the range of 268 ~ 323 K were measured by using high-precision PVTx ...
Chen Rishuai, Qi Yingxia, Wu Dong
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FILM –WISE CONDENSATION OF R1234yf AND R134a REFRIGERANTS ON FINNED TUBE WITH 32 FINS PER INCH
Wasit Journal of Engineering Sciences, 2022 Researchers have been motivating by the global warming challenge to develop alternatives substances to compounds that contribute to this problem. The refrigerant R134a (HFC134a) has been identified as one of the most environmentally damaging gases. As a
Jasim Khalid, Alaa R. Al-Badry
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