Results 11 to 20 of about 724 (168)

Numerical Analysis of Refrigerant Flow in Different Types Of Capillary Tubes Used R1270

Journal of Engineering and Sustainable Development, 2013
The capillary tube is a common expansion device used in small-sized refrigeration and air-conditioning systems. The main focus lies on the analysis of the refrigerant flow behavior along the capillary tube with different shapes (straight-coiled ...
Haider Ali Hussen
doaj   +1 more source

新型混合制冷剂R1270/R152a/R13I1的理论研究

Zhileng xuebao, 2010
A new refrigerant mixture,R1270/R152a/R13I1,is proposed as a substitute for R22 in this paper.The thermophysical properties of this environment-friendly mixture and its refrigeration system performance are theoretically analyzed with the software Refprop
冯永斌, 晏刚, 钱文波
doaj   +1 more source

Experimental Study of Split Room Air Conditioner Charged with R290 and R1270 as Substitutes to R22

Zhileng xuebao, 2013
It is urgent to seek more suitable refrigerants as the traditional R22 used widely in air conditioners nowadays is under phase out for its environmental problems and hydrofluorocarbons (HFCs) would aggravate global warming effects, while hydrocarbons ...
Yang Linde, Wu Jianhua, Hou Jie
doaj   +1 more source

Research on Optimazition Refrigerant Charge of Natural Alternative Refrigerants R1270 and R290 in Heat Pump Water Heater and Their Performances

Zhileng xuebao
Both R1270 and R290 are the alternative refrigerants of great potential. The influence of refrigerant charge on the performances of heat pump water heater using R1270 and R290 respectively and the temperature distribution of the heat transfer fluids in ...
巨福军, 侯力豪, 刘清磊, 王浩然, 肖成杰, 范晓伟   +5 more
doaj   +1 more source

Performance comparison of the single-refrigerant cascade refrigerating system

Energy Reports, 2022
In the food refrigeration industry, the single-stage compression refrigerating system cannot meet the operating conditions of a high-pressure ratio when the evaporating temperature decreases.
Zhili Sun, Jianhua Quan, Yi’an Wang, Ruishen Li, Jie Peng, Haoran Zhang, Jiapei Xu, Huan Sun, Shen Tian, Shengming Dong, Kaiyong Hu, Wenxiang Chen   +11 more
doaj   +1 more source

Investigation of the Interactions between Refrigerant, Flowsheet, and Compressor in Residential Heat Pumps

Energy Technology, Volume 11, Issue 2, February 2023., 2023
The interdependencies of the refrigerant, flowsheet, compressor, and operating point are evaluated for residential heat pumps. The study shows that the optimal refrigerant strongly depends on the flowsheet and the compressor modeling approach.
Christoph Höges, Dennis Roskosch, Jona Brach, Christian Vering, Valerius Venzik, Dirk Müller   +5 more
wiley   +1 more source

Analyzing Influence of Mix Design Constituents on Compressive Strength, Setting Times, and Workability of Geopolymer Mortar and Paste

Advances in Civil Engineering, Volume 2023, Issue 1, 2023., 2023
Geopolymer concrete and mortar have evolved over the years as potential alternatives for reducing the greenhouse gases associated with cement production. This current research was aimed at investigating the optimum dosage and concentration of sodium hydroxide required to leach out silica and alumina oxides in the fly ash for geopolymerization to take ...
Damilola Oyejobi, Mohammed Jameel, Adekunle Adewuyi, Samuel Aina, Siva Avudaiappan, Nelson Maureira-Carsalade, Prinya Chindaprasirt   +6 more
wiley   +1 more source

Experiment on Performance of Residential Air Conditioner with R1270 to Replace R22

Zhileng xuebao, 2010
林崐, 金听祥, 张静, 尤顺义, 刘阳, 郑祖义   +5 more
doaj   +3 more sources

Thermodynamic Analysis of an NH3/CO2 Cascade Refrigeration System with Subcooling in the Low‐Temperature Circuit Utilizing the Expansion Work

International Journal of Energy Research, Volume 2023, Issue 1, 2023., 2023
NH3/CO2 cascade refrigeration system is recognized one of the most promising technologies in low‐temperature application. In this paper, a NH3/CO2 cascade refrigeration system with subcooling in low‐temperature circuit driven by recovery expansion work has been proposed.
Qichao Yang, Xiaonan Chen, Weikai Chi, Liansheng Li, Guangbin Liu, Yuanyang Zhao, Zhien Zhang   +6 more
wiley   +1 more source

Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Hittite Journal of Science and Engineering, 2023
Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications.
Meltem Koşan
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