Results 11 to 20 of about 1,302 (254)

Measures to expand the application range of ammonia refrigerant [PDF]

open access: yesE3S Web of Conferences, 2023
To cope with the climate issue, China has clearly stated the goal of carbon peaking and carbon neutrality. Most of the refrigerants currently used are HCFCs and HFCs refrigerants.
Shen Xueming   +3 more
doaj   +1 more source

Propane (HC – 290) as an Alternative Refrigerant in the Food Transport Refrigeration Sector in Southern Africa – a Review

open access: yesAutomotive Experiences, 2022
Most of the food transport trucks in Sothern Africa are equipped with refrigeration and air conditioning systems filled with fluorocarbon refrigerants such as R404A to facilitate the heat transfer process.
Thomas Kivevele
doaj   +1 more source

Vapor Compression Cycle: A State-of-the-Art Review on Cycle Improvements, Water and Other Natural Refrigerants

open access: yesClean Technologies, 2023
Air conditioning and refrigeration have become necessary in modern life, accounting for more than 7.8% of greenhouse gases (GHG) emitted globally. Reducing the environmental impact of these systems is crucial for meeting the global GHG emission targets ...
Fadi Alsouda   +4 more
doaj   +1 more source

The prospect of using ozone-safe refrigerants with low global warming potential in scroll compressors. Part 1 [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2021
The Montreal Protocol and the Kigali Amendment have determined the need and deadlines of the replacement of hydro fluorinated refrigerants.
V. A. Pronin   +3 more
doaj   +1 more source

A refrigeration system for supermarkets using natural refrigerant CO2 [PDF]

open access: yesInternational Journal of Low-Carbon Technologies, 2007
This paper describes a refrigeration system using a natural refrigerant that has been developed to reduce significantly both direct and indirect greenhouse gas emissions. The new system uses both R-404A and CO 2 (R-744) as refrigerants. The new system has very low global warming potential compared with conventional HFC systems which reduces ...
A. Campbell   +2 more
openaire   +2 more sources

Resurrection of carbon dioxide as refrigerant in solar thermal absorption cooling systems

open access: yesHeliyon, 2023
The existing air conditioning and cold storage systems use conventional compressor based systems, compelling more electricity and greenhouse gasses (GHG) emissions.
Saad Dilshad   +2 more
doaj   +1 more source

Thermodynamic Analysis of Ozone-Safe Low Boiling Working Media for Turbo-Expander Plants

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2020
The article considers 46 low-boiling working media (LBWM) with zero potential for ozone layer destruction. Out of them, 14 ones are single-component hydrofluorocarbon refrigerants, 28 ones are multi-component mixtures of hydrofluorocarbon refrigerants ...
A. V. Ovsyannik, V. P. Kliuchinski
doaj   +1 more source

Ultra-Low-Temperature Refrigeration Systems: A Review and Performance Comparison of Refrigerants and Configurations

open access: yesEnergies, 2023
During the last decade, many industrial and medical applications have shown a requirement for low-temperature-cooling usage (from −40 to −80 °C), which cannot be efficiently obtained via the conventional refrigeration systems usually employed for medium ...
Muhammad Zahid Saeed   +5 more
doaj   +1 more source

Carbon dioxide as a natural refrigerant [PDF]

open access: yesInternational Journal of Low-Carbon Technologies, 2007
In the beginnings of mechanical refrigeration, at the end of the nineteenth century, carbon dioxide was one of the fi rst refrigerants to be used in compression-type refrigerating machines, later gaining widespread application mainly onboard refrigerated ships, but common in other sectors of refrigeration as well.
CAVALLINI, ALBERTO, ZILIO, CLAUDIO
openaire   +2 more sources

Natural refrigerants are favored by the future

open access: yesRefrigeration Technology, 2023
BACKGROUND: Reducing the harmful impact on the environment is a promising way to the development of low-temperature technology. According to the amendment to the Montreal Agreement, approved by the Russian Federation, the use of hydrofluorocarbons should be reduced by 85% by 2036.
Vladimir G. Ponomarev, Maxim S. Talyzin
openaire   +1 more source

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