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Evolution and Evaluation of Ultra-Low Temperature Freezers: A Comprehensive Literature Review [PDF]

open access: yesFoods
This review paper addresses the design and testing of ultra-low temperature (ULT) freezers, highlighting their critical functions in various industries, particularly foods, medicine, and research.
Christos Kypraiou, Theodoros Varzakas
doaj   +2 more sources

On the Calculation of the Virial Coefficients and Low-Pressure Joule-Thomson Effect for Refrigerant Fluids Using Two Equation of State Models [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
In this study, we calculate virial coefficients and the Joule-Thomson effect at low pressure for refrigerant fluids in order to evaluate the performance of two models of Equations of State (EOS). The studied refrigerants are R123, R124, R143a, and R152a.
Mohsen Najafi   +1 more
doaj   +1 more source

Review of hydrocarbon refrigerants as drop-in alternatives to high-GWP refrigerants in VCR systems: The case of R290

open access: yesCleaner Engineering and Technology
Global warming issues are of enormous interest to researchers and decision-makers. Some refrigerants have a large share of harmful emissions to the environment, so it is necessary to shed light on eco-friendly refrigerants and demonstrate the feasibility
Saif Ali Kadhim, Ali Habeeb Askar
exaly   +3 more sources

Comparison of Performance Parameters of Four Types of Refrigerants [PDF]

open access: yesMATEC Web of Conferences, 2022
The use of refrigerants requires to meet ecology and legislation requirements. The aim of the legislation is also to reduce the global warming potential (GWP).
Čaja Alexander   +3 more
doaj   +1 more source

Analysis of Carbon Emission Energy Inventory from Refrigerant Production and Recycling Carbon Compensation

open access: yesApplied Sciences, 2021
At present, the massive emissions of carbon dioxide and nitrogen oxides and other greenhouse gases caused by human activities have caused more and more serious negative effects on global climate change.
Haiying Wang   +4 more
doaj   +1 more source

Brownian Refrigerator [PDF]

open access: yesPhysical Review Letters, 2006
Onsager symmetry implies that a Brownian motor, driven by a temperature gradient, will also perform a refrigerator function upon loading. We analytically calculate the corresponding heat flux for an exactly solvable microscopic model and compare it with molecular dynamics simulations.
Van den Broeck, C., Kawai, R.
openaire   +5 more sources

Multi-Objective Optimization of a Multilayer Wire-on-Tube Condenser: Case Study R134a, R600a, and R513A

open access: yesEnergies, 2022
This study presents the optimization of a multilayer wire-on-tube condenser exposed to forced convection, using the Optimized Multi-objective Particle Swarm Optimization (OMOPSO) algorithm.
Yonathan Heredia-Aricapa   +6 more
doaj   +1 more source

Optimal refrigerator [PDF]

open access: yesPhysical Review E, 2010
We study a refrigerator model which consists of two $n$-level systems interacting via a pulsed external field. Each system couples to its own thermal bath at temperatures $T_h$ and $T_c$, respectively ($ \equiv T_c/T_h<1$). The refrigerator functions in two steps: thermally isolated interaction between the systems driven by the external field and ...
Allahverdyan, Armen E.   +2 more
openaire   +3 more sources

Scenarios for future Indian HFC demand compared to the Kigali Amendment

open access: yesEnvironmental Research Letters, 2022
Demand for hydrofluorocarbon (HFC) refrigerants used as substitutes for ozone-depleting substances is growing in India and is estimated to continue growing at a high rate through the middle of this century.
Alex Hillbrand   +7 more
doaj   +1 more source

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

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