Results 11 to 20 of about 2,882 (203)
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
doaj +2 more sources
Journal of EngineeringThis study used the Ansys Fluent® computational fluid dynamics code in conjunction with a volume of fluid multiphase model and phase-change model to analyze the flow boiling evaporation heat transfer coefficient and flow patterns of R32 and R1234yf with ...
Latifur Islam +3 more
doaj +2 more sources
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 ...
Mehmet Onur Karaagac +3 more
doaj +1 more source
Energy Sources and Thermal Management Technologies for Electric Vehicle Batteries: A Technical Review. [PDF]
Glob ChallOverview of Battery Thermal Management System (BTMS) methods, including air, liquid, cold plate, and hybrid cooling strategies—highlighting direct/indirect liquid techniques and hybrid integrations like PCM, refrigerant, and heat pipe systems. Abstract Efficient thermal management of high‐power lithium‐ion batteries (LiBs) is critical for ensuring ...
Rahman MA +6 more
europepmc +2 more sources
Feasibility of Using 2,3,3,3-Tetrafluoropropene (R1234yf) as a Solvent for Solid–Liquid Extraction of Biopharmaceuticals [PDF]
, 2003 Tetrafluoropropene (R1234yf) is the most likely replacement for tetrafluoroethane (R134a), a widely used refrigerant, propellant and solvent, characterised by very high global warming potential.
Suberu, J +4 more
core +5 more sources
IET Renewable Power Generation, Volume 17, Issue 16, Page 3741-3754, 7 December 2023., 2023 Low global warming potential (GWP) fluids were used to investigate strategies for reducing the effects of global warming and performance compared with hydro fluoro carbons (HFC) fluids. Four different combinations of the sCO2 cycle and ORC, including basic recuperated, pre‐compression, recompression with main compressor intercooling, and partial ...
Yunis Khan, Hakan Caliskan, Hiki Hong
wiley +1 more source
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
doaj +1 more source
Energy Science &Engineering, Volume 11, Issue 9, Page 3289-3306, September 2023., 2023 In this work, pumped thermal energy storage systems based on a transcritical CO2 charging process are investigated. A two‐zone water storage tank with a storage temperature of 115°C is used as thermal energy storage. For discharge, an Organic Rankine Cycle and, alternatively, a transcritical CO2 heat engine are investigated.
Jonas Bodner +3 more
wiley +1 more source
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
doaj +1 more source
A regenerative supercritical-subcritical dual-loop organic Rankine cycle system for energy recovery from the waste heat of internal combustion engines [PDF]
, 2017 Organic Rankine cycle (ORC) system is considered as a promising technology for energy recovery from the waste heat rejected by internal combustion (IC) engines.
Wang, Enhua +3 more
core +1 more source