Results 31 to 40 of about 36,875 (138)

Experimental optimization and evaluation of an R600a/R1150 auto-cascade refrigeration systems for ultra-low temperature applications

open access: yesResults in Engineering
Auto-cascade refrigeration systems are the most employed systems for ultra-low temperature applications, especially for small capacity systems. Recent investigations have allowed to analyze them energetically and thermodynamically, starting a research ...
Manel Martínez-Ángeles   +3 more
doaj   +1 more source

Vapor Compression Refrigeration System for Aircrafts: Current Status, Large-Temperature-Range Challenges and Emerging Auto-Cascade Refrigeration Technologies

open access: yesAerospace
Modern aircraft increasingly utilizes highly integrated electronic equipment, driving continuously increasing heat dissipation demands. Vapor compression refrigeration systems demonstrate stronger alignment with future aircraft thermal management trends,
Hainan Zhang   +4 more
doaj   +1 more source

Performance of condensing and evaporating characteristics of an auto-refrigerating cascade system

open access: yesAdvances in Mechanical Engineering, 2019
The condensing and evaporating characteristics of an auto-refrigerating cascade cycle employing ternary zeotropic mixture R600a/R23/R14 are studied in this article. When the outlet temperature of condenser is 300 K, the composition ratio of R600a/R23/R14
Shengjun Rui, Xianghua Lu, Kunfeng Liang
doaj   +1 more source

Theoretical gas phase compressibility factor of mixed refrigerants in auto-cascade refrigeration system [PDF]

open access: yesProceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering, 2015
KEYWORD: auto -cascade; mixed refrigerants; gas phase compressibility factor; ratio of refrigerant ABSTRACT: The compressibility factor is solved using the RKS equation and the corresponding calculation program. Redlich-kwongSoave the numerical calculation method for solving the compressibility factor, R22 and CO2 is calculated and compare it with ...
Jie Li   +7 more
openaire   +1 more source

Performance Study on Auto-cascade Absorption Refrigeration Cycle Using R32+R134a/DMF as Working Pairs

open access: yesZhileng xuebao, 2006
The model was presented to investigate the performance of Auto-cascade Absorption Refrigeration Cycle(ACAR) using R32+R134a/DMF as working pairs in this study.The effects of the factors such as composition of working pairs,generation temperature ...
陈光明, 房杉, 孟祥锋
doaj   +2 more sources

Performance assessment on a modified precision refrigeration cycle using low GWP mixtures

open access: yesCase Studies in Thermal Engineering
Recently, with the increasing worldwide demand for low-temperature freezers, applying natural working medium hydro-carbon refrigerants for them has been widely concerned.
Lingeng Zou, Ye Liu, Qinghua Chen
doaj   +1 more source

Research Progress on High-Temperature Auto-Cascade Heat Pumps

open access: yesZhileng xuebao
High-temperature auto-cascade heat pumps exhibit a simple and compact structure and reliable operating performance and can achieve heating at relatively high temperatures.
Cao Jiaxu Rui Shengjun Feng Tingkang Zhou Luyao He Tao
doaj  

Experimental Study on Characteristics of A New Cryopreservation Apparatus

open access: yesZhileng xuebao, 2010
The authors developed a new cryopreservation apparatus for the long-term preservation of biomaterials which incorporates auto-cascade refrigeration,automatic control and the liquidus-tracking method.The experiments for cooling and warming with variable ...
Yang Ge Zhang Shaozhi Chen Guangming Yu Xiaoyi Wu Dongbo
doaj   +2 more sources

Experimental Study on Throttle Opening in Auto-cascade Refrigeration System

open access: yesZhileng xuebao, 2005
An advanced experimental apparatus with a rectification column was set up.In the experiments,environmental protection refrigerant mixtures were employed as working fluid and the influences of throttle opening on refrigeration temperature,rectification ...
王生龙, 陈光明, 王勤
doaj  

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