Results 11 to 20 of about 1,212 (176)
Comparative Evaluation of R134a and HFO-1234ze Cryogen Spray Cooling Using a Mouse Model With Controllable Epidermal Pigmentation. [PDF]
Lasers Surg MedABSTRACT Objectives Cryogen spray cooling (CSC) is critical for protecting the epidermis during laser dermatologic procedures. The widely used cryogen, R134a, has a high global warming potential (GWP), motivating interest in environmentally favorable alternatives such as HFO‐1234ze.
Jia W +13 more
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Drop-in and retrofit refrigerants as replacement possibilities of R134a in domesticcommercial refrig
Journal of Thermal Engineering, 2021 According to the EU F-gas Regulation, the phase-out of the high global warming potential (GWP) refrigerants (with higher than 150 GWP value) had been established.
Kamel S HMOOD +4 more
doaj +1 more source
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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Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018 In this work, the effect of capillary tube diameter on refrigerator performance is studied for refrigerants R134a, R290, R600a and its mixture which named: RMix1(70%R134a,20%R290,10%R600a), RMix2(70%R134a,10%R290,20%R600a), RMix3.(50%R134a,20%R290,30 ...
Ali K. Al-Sayyab
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Experimental study of R290 replacement R134a in cold storage air conditioning system
Case Studies in Thermal Engineering, 2022 R290 refrigerant offers good environmental protection and thermodynamic characteristics. The feasibility of R290 replacing R134a was summarized through theoretical analysis and experimental tests in this paper.
Huifan Zheng +5 more
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Experimental performance of R134a and R152a using microchannel condenser
Journal of Thermal Engineering, 2015 An experimental performance study on vapour compression refrigeration system with R134a and drop in substitute R152a with aluminium microchannel condenser was carried out for condensation temperature of 48°C while evaporation temperature varied from -10 ...
V. W. Bhatkar
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Scientific African, 2020 Refrigerants of low global warming potentials (GWPs) of ≤ 150 are required by regulations as working fluids in domestic refrigeration systems. Therefore, this study theoretically investigated the performance of five new refrigerant mixtures (R440A, R441A,
Bukola O. Bolaji
doaj +1 more source
Advances in Mechanical Engineering, 2019 Blend refrigerants combing hydrofluorocarbons and hydrocarbons are good substitutes to decrease the flammability of hydrocarbons while reducing the global warming potential of hydrofluorocarbons.
Liu Zhang +4 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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Advances in Mechanical Engineering, 2016 In this article, R1234ze(E), R152a, and three mixtures M1, M2, and M3 composed of R152a and R1234ze(E) (in the ratio of 60:40, 50:50, and 40:60, by mass, respectively) as drop-in replacements of R134a in vapor compression system were theoretically ...
Zhaofeng Meng +3 more
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