Results 11 to 20 of about 2,055 (180)

European experience application in replacing hydrofluorocarbons in air conditioning units in domestic railway transport

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2021
Adoption by Russia of the Kigali Amendment to the Montreal Protocol on substances that deplete the ozone layer posed a very difficult task for consumers of artificial cold, including rail transport, to find an acceptable alternative to the R134a freon ...
I. M. Mazurin, S. N. Naumenko
doaj   +2 more sources

Estimation of the atmospheric hydroxyl radical oxidative capacity using multiple hydrofluorocarbons (HFCs) [PDF]

open access: yesAtmospheric Chemistry and Physics
The hydroxyl radical (OH) largely determines the atmosphere's oxidative capacity and, thus, the lifetimes of numerous trace gases, including methane (CH4).
R. L. Thompson   +15 more
doaj   +3 more sources

The Social Costs of Hydrofluorocarbons and the Large Climate Benefits from their Expedited Phasedown. [PDF]

open access: yesNat Clim Chang
Hydrofluorocarbons are a potent greenhouse gas, yet there remains a lack of quantitative estimates of their social and economic costs. The present study addresses this gap by directly calculating the social cost of hydrofluorocarbons (SC-HFCs) using ...
Tan T, Rennels L, Parthum B.
europepmc   +2 more sources

The assessment of hydrofluorocarbons as novel media for supercritical processing

open access: yes, 1999
The solvent properties of 1,1,1,2-tetrafluoroethane (HFC 134a), difluoromethane (HFC 32) and pentafluoroethane (HFC 125) are measured in both the liquid and supercritical phases. The relative permittivity, , of these fluids is presented as a function of
Christopher Alan. Eardley (7653368)
core   +6 more sources

Mechanistic Understanding on Difluoromethane Absorption Thermodynamics on Novel Deep Eutectic Solvents by COSMO-Based Molecular Simulation

open access: yesApplied Sciences, 2023
Hydrofluorocarbons (HFC) are fluorinated compounds used globally for refrigeration. These gases have been shown to contain a greenhouse potential of up to 22,000 times that of CO2.
Thomas Quaid, M. Toufiq Reza
doaj   +1 more source

Strengthening the global regulation of hydrofluorocarbons under the Montreal Protocol

open access: yes, 2023
The Montreal Protocol on Substances that Deplete the Ozone Layer was developed to address the concern of stratospheric ozone depletion. It has been highly effective in addressing its primary concern and it is widely considered to be one of the most ...
Du Toit, Louise
core   +1 more source

Thermodynamic Analysis of Working Fluids for a New “Heat from Cold” Cycle

open access: yesEntropy, 2020
Adsorptive Heat Transformation systems are at the interface between thermal and chemical engineering. Their study and development need a thorough thermodynamic analysis aimed at the smart choice of adsorbent-adsorptive pair and its fitting with a ...
Ilya Girnik   +2 more
doaj   +1 more source

Climate Metrics for C1–C4 Hydrofluorocarbons (HFCs) [PDF]

open access: yes, 2020
This article looks at hydrofluorocarbons (HFCs) which are potent greenhouse gases that are potential substitutes for ozone depleting substances. The Kigali amendment lists 17 HFCs that are currently in commercial use to be regulated under the Montreal ...
Lee, Timothy J.   +4 more
core   +1 more source

Hydrofluorocarbons pneumonitis as a complication of inhalation injury following air‐conditioning repairs

open access: yesRespirology Case Reports, 2022
Hydrofluorocarbon (HFC) pneumonitis is an uncommon cause of inhalation injury. HFCs are a group of chemicals predominantly used for refrigeration and cooling. A 19‐year‐old air‐conditioning technician developed acute onset of dyspnoea and chest tightness
Afifah Aqilah Abdul Malik   +4 more
doaj   +1 more source

Hydrofluorocarbons [PDF]

open access: yes, 2008
Hydrofluorocarbons (HFCs) are a group of organic compounds that contain carbon, fluorine, and hydrogen. They are by-products of industrial manufacturing and were introduced as a replacement for chlorofluorocarbons and other ozone depleting substances ...
Williams, Akan B.
core   +2 more sources

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