Results 21 to 30 of about 1,302 (254)

New HFC/HFO Blends as Refrigerants for the Vapor-Compression Refrigeration System (VCRS)

open access: yesEnergies, 2021
In this work, which is related to the current European Parliament Regulation on restrictions affecting refrigeration, four new three-component refrigerants have been proposed; all were created using low Global Warming Potential(GWP) synthetic and natural
Bartosz Gil   +2 more
doaj   +1 more source

Mechanical Vapour Compression Refrigeration System: Review Part 1: Environment Challenge

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
In Australia and others developed countries, concerns about global warming have increased, and these concerns influence the use of refrigerants as working fluids in mechanical vapour compression refrigeration systems. One of the most important aspects of
Raid Ahmed Mahmood   +2 more
doaj   +1 more source

Refrigerant Options in the Near Future

open access: yesJournal of Sustainable Development of Energy, Water and Environment Systems, 2019
Regulation EU no. 517/2014 on fluorinated greenhouse gases (the F-gas regulation) and today’s research in the refrigeration and air-conditioning technology and heat pumps are increasingly focused on the use of natural refrigerants such as ammonia ...
Vedran Zanchi   +2 more
doaj   +1 more source

Evaluation of a single stage heat pump performance by figure of merit (FOM)

open access: yesEnergy Reports, 2020
This paper proposes a quick method to investigate coefficient of performance (COP) of vapor compression heat pump from a dimensionless term, Figure of Merit (FOM), which covers refrigerant properties and operating temperatures as FOM=Ja0.1.Tc−TevTc ...
Chan Oussa Suong, Attakorn Asanakham
doaj   +1 more source

A review of carbon dioxide as a refrigerant in refrigeration technology

open access: yesSouth African Journal of Science, 2015
Tough environmental laws and stringent government policies have revolutionised the refrigeration sector, especially concerning the cycle fluid known as the refrigerant. It has been observed that only natural refrigerants are environmentally benign.
Paul Maina, Zhongjie Huan
doaj   +1 more source

Energy and Thermal Conductivity Assessment of Dimethyl-Ether and its Azeotropic Mixtures as Alternative Low Global Warming Potential Refrigerants in a Refrigeration System

open access: yesEnvironmental and Climate Technologies, 2021
Substituting Hydrofluorocarbons with natural refrigerants in domestic refrigerators will significantly reduce the direct contributions of fluorinated gases to global warming which will be of great environmental benefit. In this study, the performances of
Bolaji Bukola Olalekan   +4 more
doaj   +1 more source

Natural Working Fluids for Absorption Refrigeration

open access: yes, 2022
European and global regulations on greenhouse gases are constantly evolving. Most of the fluorinated refrigerants currently used are close to be banned due to their high global warming potentials. Therefore new alternatives less harmful to the environment need to be developed.
Kerleaux, Marianne   +4 more
openaire   +2 more sources

Energy, Exergy, and Environmental (3E) Analysis of Hydrocarbons as Low GWP Alternatives to R134a in Vapor Compression Refrigeration Configurations

open access: yesApplied Sciences, 2021
The phase-down of hydrofluorocarbons and substitution with low global warming potential values are consequences of the awareness about the environmental impacts of greenhouse gases.
Morteza Ghanbarpour   +3 more
doaj   +1 more source

Functional Equations for Calculating the Properties of Low-GWP R1234ze(E) Refrigerant

open access: yesEnergies, 2020
Legal requirements for the use of refrigerants increasingly restrict the use of high-global warming potential (GWP) refrigerants. As a result, there is a growing interest in natural refrigerants and in those belonging to the hydrofluoroolefins (HFO ...
Piotr Życzkowski   +4 more
doaj   +1 more source

Development of binary refrigeration system using CO2 refrigerant for convenience store

open access: yesMechanical Engineering Journal, 2016
From environmental point of view, natural refrigerants, whose Global Warming Potential (hereinafter GWP) is lower than commonly used refrigerants, have been considered in several industrial sectors.
Yukio YAMAGUCHI, Kenji AMAGAI
doaj   +1 more source

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