Results 31 to 40 of about 4,411,432 (181)

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

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

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

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

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

Comparison of refrigeration cycles with natural refrigerants for very rapid food freezing

open access: yes, 2012
In the industrial refrigeration natural refrigerants are gaining more and more importance, mainly because of increasing environmental concerns. In this work food processing applications are considered, with particular reference to very rapid freezing ...
Polonara F.   +3 more
core   +2 more sources

Experimental Study of Explosion Limits of Refrigerants and Lubricants’ Mixture [PDF]

open access: yes, 2012
The explosion limits of refrigerants and lubricants’ mixture were studied. The refrigerants like R161, R1234yf and R152a are combustible. Lubricants, to a certain extent, are combustion-supporting.
Chen, Guangming, Chen, Q, Shi, Y.Q
core   +1 more source

Natural Refrigerant on Board Marine Vessels

open access: yesPomorski zbornik, 2022
The paper deals with the topic of refrigerants, their historical evolution, applied legislation and trends in maritime affairs. Regarding the Environmental care paper considers the impact of refrigerants of refrigeration systems, both on stationary plants on land and on plants on board.
Glavan, Ivica   +3 more
openaire   +4 more sources

R32 And HFOs As Low-GWP Refrigerants For Air Conditioning [PDF]

open access: yes, 2012
This paper will review the status worldwide on technical and policy search for next-generation refrigerants with both low Global Warming Potential (LGWP) and low Life Cycle Climate Performance (LCCP) with particular focus on R410A replacement for unitary
Pham, Hung M., Rajendran, Rajan
core   +1 more source

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