Results 21 to 30 of about 4,411,432 (181)
A refrigeration system for supermarkets using natural refrigerant CO2 [PDF]
International 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
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Resurrection of carbon dioxide as refrigerant in solar thermal absorption cooling systems
Heliyon, 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
Safe Use of Flammable Refrigerants in Cooling/Heating Cycles
, 2023 The F-Gas regulation and the resulting phasedown of fluorinated hydrocarbons (HFOs) as safe refrigerants effects an increase in research and development activities for alternative low-GWP refrigerants. Besides new synthetic refrigerants, there is a focus
Schnabel, Lena +2 more
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Natural refrigerants are favored by the future
Refrigeration 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
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Thermodynamic Analysis of Ozone-Safe Low Boiling Working Media for Turbo-Expander Plants
Известия 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
Energies, 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]
International 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
New HFC/HFO Blends as Refrigerants for the Vapor-Compression Refrigeration System (VCRS)
Energies, 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
Mechanical Vapour Compression Refrigeration System: Review Part 1: Environment Challenge
International Journal of Applied Mechanics and Engineering, 2020 In Australia and others developed countries, concerns about global warming have increased, and these concerns influence the use of refrigerants as working fluids in mechanical vapour compression refrigeration systems. One of the most important aspects of
Raid Ahmed Mahmood +2 more
doaj +1 more source
Refrigerant Options in the Near Future
Journal of Sustainable Development of Energy, Water and Environment Systems, 2019 Regulation EU no. 517/2014 on fluorinated greenhouse gases (the F-gas regulation) and today’s research in the refrigeration and air-conditioning technology and heat pumps are increasingly focused on the use of natural refrigerants such as ammonia ...
Vedran Zanchi +2 more
doaj +1 more source