Results 1 to 10 of about 765 (158)

Experimental results and analysis of throttling refrigeration with ternary mixed refrigerant [PDF]

open access: yesE3S Web of Conferences, 2021
In-depth analysis of the influence of mixed working fluids on the thermodynamic performance of a throttling refrigeration cycle through experimental research. After optimizing the calculation of two ternary mixed working fluids with different compositions, the charging test is carried out, and the throttle characteristic curve of the mixed working ...
Ruonan Wang, Bin Liu, Haodong Liu
openaire   +2 more sources

A study on the use of dual mixed refrigerant in a cascade dual mixed refrigerant cycle [PDF]

open access: yesAdvances in Mechanical Engineering, 2017
In this article, a precooling cycle was used to reduce the power consumption and improve the heat transfer efficiency of a mixed refrigerant cycle. Propane precooling and mixed refrigerant precooling are two common precooling methods. The cascade dual mixed refrigerant cycle, which involves mixed refrigerant precooling and has a specific power ...
Guo-guang Ma   +3 more
openaire   +2 more sources

Mixed Magnetism for Refrigeration and Energy Conversion [PDF]

open access: yesAdvanced Energy Materials, 2011
AbstractThe efficient coupling between lattice degrees of freedom and spin degrees of freedom in magnetic materials can be used for refrigeration and energy conversion. This coupling is enhanced in materials exhibiting the giant magnetocaloric effect.
Dung, N.H.   +8 more
openaire   +5 more sources

Experimental study on refrigerant mixing as a drop-in substitute for R134a in a domestic refrigerator

open access: yesAl-Qadisiyah Journal for Engineering Sciences, 2023
This research aims to find ways to use different mixtures instead of R134a refrigerants that are more efficient and better for the environment. The Kyoto Protocol states that hydrofluorocarbon refrigerants must be replaced due to their high Global Warming Potential values, contributing to environmental damage.
Mohammed Mohammed, Maathe Theeb
openaire   +1 more source

Calculation of the operating mode of the mixing refrigerator

open access: yesIOP Conference Series: Earth and Environmental Science, 2018
This article considers the calculation of a mixing refrigerator (contact refrigerator) taking into account the absorption of gaseous components. Calculation of operating mode and definition of optimal operating conditions of the machine that provides the given final gas temperature is carried out.
O P Deriugina, A O Larchenko
openaire   +1 more source

Development of rectifying circuit with mixed refrigerants

open access: yesInternational Journal of Refrigeration, 1989
The use of mixed refrigerants for heat pump cycles has attracted the attention of the International Energy Agency as an important aspect of heat pump technology, and research and development activities in this area are being promoted all over the world.
Yoshida, Y.   +4 more
openaire   +2 more sources

Improving the energy effectiveness of domestic refrigerators by the application of mixed refrigerants [PDF]

open access: yes, 1978
A critical review of U.S. and foreign literature on the use of a mixture of refrigerants rather than a single one in a refrigeration unit indicates that energy can be conserved in properly arranged systems. An independent analytical study performed under the current contract using a 50% mixture of R-12 and R-114 in a two-evaporator refrigerator typical
openaire   +2 more sources

Design of nonflammable mixed refrigerants based on the partial molar enthalpy difference in mixed-refrigerant Joule-Thomson refrigerators with/no pre-cooling stage

open access: yesIOP Conference Series: Materials Science and Engineering
Abstract Mixed-refrigerant Joule-Thomson refrigeration (MJTR) is an important cooling method at temperatures from 80 to 230 K. It can be used in cryosurgery, high-temperature superconductivity and sensor cooling etc. However, most of the studies are on nitrogen-hydrocarbon refrigerants, which are not allowed in applications where there ...
Yunxiao Wang   +4 more
openaire   +1 more source

Impact of the mixing theories on the performance of ejector expansion refrigeration cycles for environmentally-friendly refrigerants

open access: yesInternational Journal of Refrigeration, 2019
Abstract Ejector expansion refrigeration cycle was investigated theoretically to compare the constant pressure mixing and constant area mixing ejector theories making use of thermodynamic models. Performance improvement was presented according to optimum and constant value pressure drop assumptions in order to simulate the design and off-design ...
Atmaca, Aye Ugurcan   +2 more
openaire   +4 more sources

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