Results 1 to 10 of about 1,302 (254)

Two-stage cascade configurations based on ejectors for ultra-low temperature refrigeration with natural refrigerants [PDF]

open access: yesInternational Journal of Thermofluids, 2023
Research in ultra-low temperature refrigeration applications has intensified in recent years after the appearance of vaccines in response to the COVID-19 pandemic.
Cosmin-Mihai Udroiu   +4 more
doaj   +4 more sources

Adsorbents, Working Pairs and Coated Beds for Natural Refrigerants in Adsorption Chillers—State of the Art

open access: yesEnergies, 2021
Adsorption refrigeration systems are promising, sustainable solutions for many cooling applications. The operating range and the performance of an adsorption cooling cycle are strongly dependent on the properties of adsorbents, adsorbates, and bed ...
Piotr Boruta   +3 more
doaj   +3 more sources

Dynamic omniphobic surfaces enable the stable dropwise condensation of completely wetting refrigerants [PDF]

open access: yesNature Communications
Condensation is a vital process integral to numerous industrial applications. Enhancing condensation efficiency through dropwise condensation on hydrophobic surfaces is well-documented.
Kazi Fazle Rabbi   +4 more
doaj   +2 more sources

Retrofitting of the District Heating System Based on the Application of Heat Pumps Operating with Natural Refrigerants

open access: yesEnergies, 2023
The implementation of renewable energy sources and heat pumps with natural refrigerants in the existing 3rd-generation district heating (DH) systems is a promising technology for the conversion to a 4th-generation DH system.
Damir Požgaj   +3 more
doaj   +3 more sources

Future Trends of Natural Refrigerants: Selection, Preparation, and Evaluation

open access: yesEngineering Proceedings
The field of refrigeration technology has played a pivotal role in modern society, providing essential cooling solutions for various industries, including food preservation, healthcare, and manufacturing.
Sheila Mae R. Bantillo   +5 more
doaj   +3 more sources

A Systematic Review on Heat Transfer and Pressure Drop Correlations for Natural Refrigerants

open access: yesEnergies
Due to environmental concerns, natural refrigerants and their use in refrigeration and air conditioning systems are receiving more attention from manufacturers, end users and the scientific community.
Alberta Carella, Annunziata D’Orazio
doaj   +3 more sources

Progress in ground-source heat pumps using natural refrigerants [PDF]

open access: yesInternational Journal of Refrigeration, 2018
Harrison M Skye
exaly   +2 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

Thermodynamic Properties of Monatomic, Diatomic, and Polyatomic Gaseous Natural Refrigerants: A Molecular Dynamics Simulation [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2021
Owing to their lower adverse environmental impacts, natural refrigerants have recently attracted a huge deal of attention. In this regard, the present study is aimed to evaluate the thermodynamic properties of different gaseous natural refrigerants at ...
Ali Rajabpour, Milad Abbasi
doaj   +1 more source

The prospect of using ozone-safe refrigerants with low global warming potential in scroll compressors. Research and practice of using R744 and R290. Part 2 [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2022
Scroll compressors currently operate successfully on various natural refrigerants, among which the most popular are propane R290 and carbon dioxide R744. This is due to the performance characteristics of the refrigerants studied in the previous article.
V. A. Pronin   +3 more
doaj   +1 more source

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