Results 11 to 20 of about 765 (158)

The Exploratory Research on Mixed Refrigerants of A Five-Stage Autocascade Refrigeration System

open access: yesZhileng xuebao, 2011
A five-stage Auto-cascade refrigeration cycle(ARC) is brought forward.According to the experiences that different systems with different components and proportion of mixed refrigerants can result in different evaporating temperature,the components selecting principle of non-azeotropic mixed-refrigerants is analyzed and the components are selected.The ...
doaj   +4 more sources

Progress in Hydrogen Liquefaction Technology With Mixed Refrigerant

open access: yes发电技术, 2023
The pollution-free characteristics of hydrogen energy make it a necessary means to achieve the goals of “carbon peaking” and “carbon neutralization” in China.
ZHAO Lianpeng   +3 more
doaj   +1 more source

A Comparative Study of Biomethane Liquefaction Processes

open access: yesChemical Engineering Transactions, 2022
Made from organic waste, biomethane is a source of renewable energy with reduced emission of greenhouse gases, that could replace fossil fuels in transportation, heating, and electricity production.
Joseph Al Khoury   +2 more
doaj   +1 more source

The name of the article is Experimental researches of refrigeration machines retrofit to alternative ozone friendly mixed refrigerants power efficiency

open access: yesЮг России: экология, развитие, 2015
The problems of refrigeration equipment transfer from ozone destroying refrigerant R22 to alternative mixed refrigerants are considered in the article. The exergy method is chosen from all possible ways of energy factors comparison.
A. Y. Kuzmin, A. V. Bukin
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

Molecular dynamics simulation of non-azeotropic refrigerants separation in auto-cascading refrigeration [PDF]

open access: yesE3S Web of Conferences, 2019
The core problem of auto-cascading refrigeration is the separation of non-azeotropic refrigerants. The separation effect of mixed refrigerant directly determines the refrigeration effect of auto-cascading refrigeration system and the value of COP.
Zheng Dayu   +3 more
doaj   +1 more source

A Comprehensive Assessment of Two-Phase Flow Boiling Heat Transfer in Micro-Fin Tubes Using Pure and Blended Eco-Friendly Refrigerants

open access: yesEnergies, 2023
This review study examines flow boiling heat transfer in micro-fin tubes using mixed and pure refrigerants with zero ozone-depleting potential (ODP) and minimal global warming potential (GWP).
Neeraj Kumar Vidhyarthi   +6 more
doaj   +1 more source

Experimental Study of PVTx Properties about Mixture Refrigerant R1234yf/R32

open access: yesZhileng xuebao, 2016
In order to get the thermophysical properties of mixed refrigerants R1234yf/R134a, the PVT properties of mixture refrigerant R1234yf/R32 with mass fraction 15%/85%, 25%/75% in the range of 253-313 K were measured by using high-precision PVTx apparatus ...
Chen Rishuai, Qi Yingxia, Wu Dong
doaj   +2 more sources

The Experimental Study of PVTx Properties of Near Aeotropic Mixture Refrigerant R290/R134a

open access: yesZhileng xuebao, 2014
In order to get the thermophysical properties of mixed refrigerants R134a/R290, the author built PVTx experimental system with high accuracy. Based on the Burnett method, the author measured the PVT properties of R134a/R290 with mass fraction 50%/50%, 55%
Yang Xi, Qi Yingxia, Chen Wei, Zhang Hua
doaj   +2 more sources

Comparative Analysis of Heat Transfer in a Type B LNG Tank Pre-Cooling Process Using Various Refrigerants

open access: yesEnergies
This study presents a comprehensive three-dimensional Computational Fluid Dynamics (CFD) analysis of the pre-cooling process of a Type B LNG tank using various refrigerants, including liquid nitrogen (LN), nitrogen gas (NG), liquefied natural gas (LNG ...
Qiang Sun   +6 more
doaj   +1 more source

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