Results 261 to 270 of about 2,491 (296)

Opportunities with alternative refrigerants

ITherm 2002. Eighth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (Cat. No.02CH37258), 2003
Due to environmental concerns, a new generation of refrigerants has been introduced. The new fluids perform well, but because of their remaining global warming potential they are still under scrutiny internationally and may be eliminated in the future.
null Yunho Hwang, R. Radermacher
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The Comparative Analysis of Alternative Refrigerants on Ship Refrigeration Systems

2023
El uso de gases CFC y HCFC, que se utilizan ampliamente en los sistemas de refrigeración y aire acondicionado de los buques, se ha restringido debido a los efectos nocivos sobre la capa de ozono y el calentamiento global. Por lo tanto, el uso de refrigerantes alternativos se convierte en una posible solución.
Yalçın Durmuşoğlu, Gazi Koçak
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Thermodynamic properties for the alternative refrigerants

International Journal of Refrigeration, 1998
Abstract Models commonly used to calculate the thermodynamic properties of refrigerants are summarized. For pure refrigerants, the virial, cubic, Martin-Hou, Benedict-Webb-Rubin, and Helmholtz energy equations of state and the extended corresponding states model are discussed. High-accuracy formulations for 16 refrigerants are recommended.
Mark O McLinden, Eric W Lemmon, Richard T Jacobsen   +2 more
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Criteria for Drop-in Replacement of Existing Refrigerant with an Alternative Refrigerant

2019
In the present work, criteria for substituting working refrigerant with alternative refrigerant is given through R134a being replaced with ternary mixtures of R134a/hydrocarbons. Thermodynamic properties were compared theoretically using REFPROP software for five refrigerant mixtures.
Srinivas Pendyala, R. Prattipati
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Dielectric properties of alternative refrigerants

IEEE Transactions on Dielectrics and Electrical Insulation, 2006
This paper gives an overview of our research, from experimental measurements of the relative permittivity on new and alternative refrigerants, to theoretical interpretation of the data and density functional and density functional self-consistent reaction field calculations for a series of HFC molecules.
F.J.V. Santos, R.S. Pai-Panandiker, C.A. Nieto de Castro, U.V. Mardolcar   +3 more
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Evaluation of alternative refrigerant—adsorbent pairs for refrigeration cycles

Applied Thermal Engineering, 1996
Abstract The refrigerant-adsorbent pairs at present preferred for solid-sorption refrigeration cycles are ammonia-carbon, methanol-carbon, ammonia salts and water-zeolite. Porosity tests have been carried out on a range of alternatives, including R32 and butane, as refrigerants and new monolithic carbon adsorbents.
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Analysis of alternatives to high GWP refrigerants for eutectic refrigerating systems

International Journal of Refrigeration, 2017
Abstract The EU Regulation No 517/2014 is going to phase-out R507A and R404A refrigerants because of their high GWP values. Different alternative refrigerants are under consideration, with the research results available for various applications. However, the eutectic refrigerating system operates at specific conditions, which are analysed in the ...
Liutauras Vaitkus, Vytautas Dagilis
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A Thermodynamic Analysis of Alternative Refrigerants in Vapor-Compression Refrigeration Cycles

SAE Technical Paper Series, 1990
<div class="htmlview paragraph">The study of differences between Refrigerant 12 and Refrigerant 134a in automotive air conditioners has led to new methods of presenting refrigerant data. Pressure-enthalpy curves generated on a PC computer with high resolution graphics assist engineers in understanding thermodynamic behavior.
M. J. Provost, E. M. Arrieta
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Alternative Refrigerant Research Program

1998
The National Institute of Standards and Technology (NIST) is often called upon to contribute specialized research or technical advice to initiatives of national importance. The U.S. response to the international environmental problem of ozone depletion required such a contribution.
Albert N. Link, John T. Scott
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ALTERNATIVE REFRIGERANT R-134A

2015
Geçmişten günümüze soğutma sistemlerinde kullanılmakta olan soğutucu kloroflorokarbonun ozon tabakasına vermiş olduğu büyük zararlardan dolayı, yeni alternatif soğutkanların geliştirilmesi ve üretimine biran önce geçilmesi gerekmektedir. Bu çalışmada, halen kullanılmakta olan kloroflorokarbonlara alternatif olarak geliştirilmiş hidroflorokarbon R-134A ...
KARABACAK, Rasim, KAYA, Okyar
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