Results 21 to 30 of about 14,638 (306)

P-V-T Behavior of 2,3,3,3-Tetrafluoroprop-1-ene (HFO-1234yf) in the Vapor Phase from (243 to 373) K [PDF]

open access: yes, 2010
The P-V-T properties of 2,3,3,3-tetrafluoroprop-1-ene (CF 3 CFdCH 2 , HFO-1234yf), an environmentally friendly refrigerant, were measured using a constant volume apparatus.
Di Nicola, Cristiano   +4 more
core   +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

Carbon Dioxide Heat Transfer Coefficients And Pressure Drops During Flow Boiling: Assessment Of Predictive Methods [PDF]

open access: yes, 2010
Among the alternatives to the HCFCs and HFCs, carbon dioxide emerged as one of the most promising environmentally friendly refrigerants. In past years many works were carried out about CO2 flow boiling and very different two-phase flow characteristics ...
A. Rosato   +3 more
core   +1 more source

Development of a dynamic model for ice-on-coil external melt storage systems [PDF]

open access: yes, 2019
Ice storage systems are commonly used to balance the intermittency of renewable energy and decrease the peak load by switching to off-peak hours. An adequate model is necessary to predict the behaviour of these systems.
Beyne, Wim   +4 more
core   +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

Non-technological barriers to the diffusion of energy-efficient HVAC&R solutions in the food retail sector [PDF]

open access: yes, 2018
SuperSmart is an European Union (EU) project aiming at speeding up the uptake of energy-efficient re- frigeration, heating and cooling solutions for Europe\u2019s food retail sector, reducing its energy use, lowering its environmental footprint and ...
Marinetti, Sergio   +4 more
core   +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

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

Home - About - Disclaimer - Privacy