Results 111 to 120 of about 1,974 (165)

Identifying Reactivity Differences of Two-Carbon-Atom-Based Legacy Refrigerants at Group 9 Metal Pincer Complexes. [PDF]

ACS Org Inorg Au
Mauro LA, Herlinger IA, Hall SJ, Hughes RP, Cramer RE, Fredin LA, Vicic DA.   +6 more
europepmc   +1 more source

High-Precision Salt Concentration Detection Using a CMUT Array with Temperature Compensation. [PDF]

Micromachines (Basel)
Chai H, He C, Luo M, Zhang G, Wang H, Wang R, Yang Y, Cui J, Zhang W, Jia L.   +9 more
europepmc   +1 more source

Finding non-fluorinated alternatives to fluorinated gases used as refrigerants.

Environ Sci Process Impacts
Glüge J, Breuer K, Hafner A, Vering C, Müller D, Cousins IT, Lohmann R, Goldenman G, Scheringer M.   +8 more
europepmc   +1 more source

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Efficiency of Refrigeration Equipment on Natural Refrigerants

Chemical and Petroleum Engineering, 2020
A comparative investigation of losses in refrigeration plants applied in the food industry was carried out using the natural refrigerants CO2 and refrigerant grade propane (R290) at two working temperature levels (evaporation temperature minus 35°С and minus 10°С) using entropic and statistical analysis methods.
V. V. Shishov, M. S. Talyzin
openaire   +1 more source

Natural Refrigerants

Mechanical Engineering, 1998
This article explains that substances such as air, water, ammonia, hydrocarbons, and carbon dioxide may provide solutions to the problem of finding environmentally acceptable refrigerants. The search for new and environmentally benign refrigerants to replace the existing chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFC) has led to the ...
Yunho Hwang, Michael Ohadi, Reinhard Radermacher   +2 more
openaire   +1 more source

Natural refrigerants for refrigeration and air-conditioning systems

Applied Thermal Engineering, 1997
In the past, several natural working fluids were used in refrigeration and air-conditioning systems. However, the appearance of CFCs caused a drastic reduction in the utilisation of those fluids. Understanding of the environmental damage of CFCs focused attention on alternative refrigerants. From these, the ones that have minimum (or nil) environmental
S. B. Riffat, C. F. Afonso, A. C. Oliveira, D. A. Reay   +3 more
openaire   +2 more sources

Performance Experiment of Natural Refrigerant Cascaded Refrigeration System

Advanced Materials Research, 2011
In this paper, the performances of natural refrigerant R290/CO2 cascaded refrigeration system using R290 as high temperature cycle refrigerant and CO2 as low temperature cycle refrigerant were investigated experimentally. The test results show that both CO2 compressor and R290 compressor start up stably and present good running performance.
Jing Hong Ning, Sheng Chun Liu
openaire   +1 more source

A Review Paper on Natural and Synthetic Refrigerants

International Journal of Innovative Research in Engineering & Management, 2022
The Montreal Protocol (1987) prohibited halogenated hydrocarbons with a high ozone depletion potential (ODP) because of their harmful effects on the ozone layer, which protects the earth from UV radiation. The greenhouse gases (GHG) utilized in contemporary refrigeration, air conditioning, and heat-pumping systems are subject to a time-limited permit ...
Pooran Singh, Dr. Jitendra
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Selection of suitable natural refrigerants pairs for cascade refrigeration system

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2013
This study presents thermodynamic analyses and optimization of a two-stage cascade system employing a choice of eight natural refrigerants leading to the most suitable refrigerants pair for wide ranges of operating temperatures; the optimal pair was based on best system performance (cooling coefficient of performance) as well as best volumetric cooling
Jahar Sarkar, Souvik Bhattacharyya, Arjun Lal   +2 more
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Multi-objective Optimization of Thermodynamic and Economic Performances of Natural Refrigerants for Cascade Refrigeration

Arabian Journal for Science and Engineering, 2021
In this paper, thermo-economic optimization and comparative analysis of a cascade refrigeration system configured with flash gas removal in its high-temperature cycle (HTC) and flash intercooling with indirect subcooling in lower temperature cycle (LTC) using different natural refrigerant pairs is performed.
Kaushalendra Kumar Singh, Rajesh Kumar, Anjana Gupta   +2 more
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