Results 31 to 40 of about 6,765 (186)
Exergy Analysis of Tita nium Dioxide (TiO2) Suspended with R290/R600 as a Substitute for R134a [PDF]
Archives of Metallurgy and MaterialsSynthetic refrigerants are being phased out gradually in accordance with international environmental protection protocols because of global warming and ozone layer depletion.
D.M. Madyira, T.O. Babarinde
doaj +1 more source
Experimental and Theoretical Investigation of Propane/Butane and Propane/Isobutane Mixtures as an Alternative to R134a in a Domestic Refrigerator [PDF]
Engineering and Technology Journal, 2014 In the present work, theoretical and experimental investigation have been carried out with two hydrocarbon refrigerant mixtures as a possible alternatives to R134a. Theoretical performance of an ideal vapor compression refrigeration cycle using R290/R600
Wahid S. Mohammad, Assad Oda Jassim
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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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Analysis of R134a Organic Regenerative Cycle
Journal of Power and Energy Engineering, 2020 The analysis of organic regenerative cycles is necessary to verify the possibilities of increasing the work and efficiency of a thermodynamic cycle according to some control parameters. The results obtained from this work can be beneficial in several areas such as solar thermal energy.
André Felippe Vieira da Cunha +1 more
openaire +2 more sources
Heat Transfer, Volume 55, Issue 6, Page 3495-3522, September 2026.ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley +1 more source
Oil Circulation Effects on Evaporation Heat Transfer in Brazed Plate Heat Exchanger using R134A [PDF]
, 2012 Experimental study was performed for oil circulation effects on evaporation heat transfer in the brazed type plate heat exchangers using R134A. In this study, distribution device was installed to ensure uniform flow distribution in the refrigerant flow ...
Chang, Youngsoo +2 more
core +1 more source
Enhancing VCRS performance A study of R134a and refrigerant blends with spiral condensers and series
Journal of Thermal EngineeringThe purpose of this work will be the improve the vapour compression refrigeration system, taking into account the usage of environmentally friendly refrigerants.
Sourabh KULKARNI +2 more
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Investigation of Working Fluid Performance through a Centrifugal Compression System
Applied Mechanics, 2022 Commonly, researchers have investigated many factors that impact the performance of air conditioning and refrigeration systems, such as varied cooling configurations, operating conditions and optimization of specific system components.
James Bull +2 more
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R134a flow patterns in small-diameter tubes
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2005 R134a vapour-liquid two-phase flow patterns were studied in vertical small-diameter tubes. The observed flow patterns include bubbly, dispersed bubble, slug, churn, annular, and mist flow. Six integrated flow pattern maps, derived for two internal diameters (2.01 and 4.26 mm) and three different pressures (6.0, 10.0, 14.0 bar), are presented.
Chen, L, Tian, YS, Karayiannis, TG
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Safety Science and Technology, Volume 1, Issue 3, September 2026.This study investigated the combustion characteristics of mixtures of the environmentally friendly flame retardant HFO‐1225zc with three combustible working fluids (HFO‐1234yf, HFC‐32, and HFO‐1243zf). The flame retardant efficacy of HFO‐1225zc on three working fluids decreases in the order: HFO‐1234yf, HFC‐32, HFO‐UFL1243zf. ABSTRACT The environmental
Biao Feng +8 more
wiley +1 more source