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Relevant bibliographies by topics / R-134a and R-600a refrigerants

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Academic literature on the topic 'R-134a and R-600a refrigerants'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "R-134a and R-600a refrigerants"

1

Kim, M. S., W. J. Mulroy, and D. A. Didion. "Performance Evaluation of Two Azeotropic Refrigerant Mixtures of HFC-134a With R-290 (Propane) and R-600a (Isobutane)." Journal of Energy Resources Technology 116, no. 2 (1994): 148–54. http://dx.doi.org/10.1115/1.2906020.

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The reduction in chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) production and the scheduled phase-out of these ozone-depleting refrigerants require the development and determination of environmentally safe refrigerants for use in heat pumps, water chillers, air conditioners, and refrigerators. This paper presents a performance evaluation of a generic heat pump with two azeotropic refrigerant mixtures of HFC-134a (1,1,1,2-tetrafluoroethane) with R-290 (propane) and R-600a (isobutane); R-290/134a (45/55 by mass percentage) and R-134a/600a (80/20 by mass percentage). The performance

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Memet, Feiza, and Daniela Elena Mitu. "A Study Initiated because of the Global Warming from R-134a." Advanced Materials Research 837 (November 2013): 751–56. http://dx.doi.org/10.4028/www.scientific.net/amr.837.751.

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Vapour compression cycles are commonly used in household refrigerators and also in many commercial and industrial refrigeration systems. R-134a is a working fluid widespread in this kind of systems. A chlorine free refrigerant such as R-134a has a disadvantage in the sense of its relatively high Global Warming Potential (GWP), although the specific Ozone Depletion Potential (ODP) is null. International concern over the relatively high global warming potential of R-134a, and other refrigerants belonging to the same family, will lead in the near future to the stop of their production and use. Fo

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Mahdi, Loauy Abd Al-Azez, and Ahmed Yusef Lateif. "Prediction of Heat Transfer Coefficient and Pressure Drop in Wire Heat Exchanger Working with R-134a and R-600a." Journal of Engineering 25, no. 11 (2019): 1–20. http://dx.doi.org/10.31026/j.eng.2019.11.01.

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An experimental and theoretical works were carried out to model the wire condenser in the domestic refrigerator by calculating the heat transfer coefficient and pressure drop and finding the optimum performance. The two methods were used for calculation, zone method, and an integral method. The work was conducted by using two wire condensers with equal length but different in tube diameters, two refrigerants, R-134a and R-600a, and two different compressors matching the refrigerant type. In the experimental work, the optimum charge was found for the refrigerator according to ASHRAE recommendat

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Misra, R. S. "Appropriate Vapour Compression Refrigeration Technologies for Sustainable Development." International Journal of Advance Research and Innovation 2, no. 3 (2014): 60–67. http://dx.doi.org/10.51976/ijari.231411.

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This paper mainly focuses on CFCs and their alternatives to their use. The main critical issue in the field of green technologies is to develop the relationship between ODP and GWP and suggest new and alternative refrigerants which do not damage ozone layer and not to increase global warming. The first and second law thermodynamic analysis of vapor refrigeration system of 1.5 ton capacity for seven eco-friendly refrigerants such as ( R-134a, R-404a, R-407C, R-502, propane(R-290), isobutene(R-600a), butane (R-600)) have been carried out in terms of performance parameters such as COP, EDR, Exege

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Hsieh, Shou-Shing, and Tsung-Ying Yang. "Nucleate Pool Boiling From Coated and Spirally Wrapped Tubes in Saturated R-134a and R-600a at Low and Moderate Heat Flux." Journal of Heat Transfer 123, no. 2 (2000): 257–70. http://dx.doi.org/10.1115/1.1351818.

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Pool nucleate boiling heat transfer experiments from coated surfaces with porous copper (Cu) and molybdenum (Mo) and spirally wrapped with helical wire on copper surfaces with micro-roughness immersed in saturated R-134a and R-600a were conducted. The influence of coating thickness, porosity, wrapped helical angle, and wire pitch on heat transfer and boiling characteristics including bubble parameters were studied. The enhanced surface heat transfer coefficients with R-600a as refrigerant found are 2.4 times higher than those of the smooth surfaces. Photographs indicate that the average number

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Eltyshev, I. P., S. N. Kopylov, N. V. Golov, and I. R. Begishev. "On Potential Fire Hazard of Use of Environmentally Friendly Refrigerants in Refrigeration Equipment." Occupational Safety in Industry, no. 2 (February 2024): 24–29. http://dx.doi.org/10.24000/0409-2961-2024-2-24-29.

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Today, the most common domestic electric equipment is a household refrigerator. The use of flammable substances as refrigerants for refrigerators can lead to severe consequences. As the production of hydrofluorocarbon class refrigerants for refrigeration equipment was restricted by the Kigali amendment to the Montreal Protocol, refrigeration technologies have been transferred from using hydrofluorocarbon class refrigerants to natural refrigerants (propane, butane, isobutane). The replacement of hydrofluorocarbon class refrigerants with natural refrigerants is already noticeable since in many c

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Ivana, Reza Taufiqi, Imron Musthofa, and Muhammad Rezki Fitri Putra. "ANALISA EFISIENSI LAJU PENDINGINAN REFRIGERAN R-32, R-134A, R410A, DAN LPG PADA SIMULATOR REFRIGERATOR." JTAM ROTARY 5, no. 2 (2023): 70. http://dx.doi.org/10.20527/jtam_rotary.v5i1.8416.

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Efisiensi sistem refrigeran dengan fungsi sebagai fluida yang menyerap panas dalam sistem sehingga terjadi penurunan suhu melalui mekanisme evaporasi dan kondensasi. Percobaan ini dilakukan untuk mengetahui refrigeran yang mempunyai dampak laju pendinginan terbaik dengan tingkat temperatur yang berbeda sehingga dapat diamati laju pendinginan dari refrigeran R-134a, R-32, R-410a, dan LPG. Dalam prakteknya menggunakan simulator pendingin sebagai media pembelajaran dalam menerapkan prinsip kerja mesin refrigerasi. Metode penelitian yang dilakukan adalah dengan mengukur temperatur pada waktu 30 de

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Dhanasi, Sabari*1and Dr.Smt.G.Prasanthi2. "IMPROVEMENT IN COEFFICENT OF PERFORMANCE OF DOMESTIC REFRIGERARION WITH TWO REFRIGERANTS (R-134a AND R600a) USING R600a COMPRESSOR AND WRINKLE CONDENSER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 11 (2017): 90–96. https://doi.org/10.5281/zenodo.1042084.

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Now-a-days, domestic refrigerator systems are important for industrial and domestic applications. Refrigerator mostly works on vapour compression refrigerator. The system consists of components like compressor, condenser expansion value and evaporator. The performance of the system depends upon allthe components of the systems. The main objective in this presents work is to verify the performance of a domestic refrigerator of capacity 165L,by using R-134a and R600a as refrigerants, hermetic sealed compressor(R-600a), and wrinkle shaped condenser having 6.4mm & length 8m and compared with t

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Anusha, T. "Analysis on Condenser with Different Refrigerants." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 2021–27. http://dx.doi.org/10.22214/ijraset.2021.36772.

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: This research considered the analysis of condensers by using refrigerants R-134A, R-22 and R-744. The optimal values were obtained by varying different performance parameters. The simulation can be done by using CFD ANSYS Software. Experiments were conducted in order to justify the performance of refrigerants on the fins in condensers and compare the performance of refrigerants on the condenser and fins and find which one has the best Eco-friendly results. The simulated Ansys results showed that R-744 has better and more Eco-friendly results than R-134A and R-22. The main drawback for R22 de

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Rosero, Cristhian R., P. Sebastián Espinel, and Pablo V. Tuza. "New Refrigerant Molecules from Structure Optimization." Processes 9, no. 6 (2021): 949. http://dx.doi.org/10.3390/pr9060949.

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In the present work, various objective functions were formulated and optimized using the mixed integer nonlinear programming and the generalized reduced gradient nonlinear method from the solver tool of Microsoft® Excel 2016, respectively. The CH3FO2, C2H4F2O, CH2F2O2, CH2F2O, C3H4F2, and the C2H2F2O molecules were found to meet structural feasibility constraints and physical properties from refrigerant molecules and have not previously been reported in the literature. These new refrigerants present global warming potential values similar to that from the R-134a and Freon 12 refrigerants and n

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Dissertations / Theses on the topic "R-134a and R-600a refrigerants"

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Gorgy, Evraam I. "Pool boiling of R-134a and R-123 on smooth and enhanced tubes." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/804.

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Barbieri, Paulo Eduardo Lopes. "Estudo teórico-experimental da ebulição convectiva do refrigerante R-134a em tubos lisos." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-31102005-152435/.

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Apresenta um estudo teórico-experimental da ebulição convectiva do fluido refrigerante R-134a no interior de tubos lisos. Os parâmetros físicos disponíveis para medida foram: pressão, temperatura, vazão de refrigerante e potência de aquecimento, os quais, juntamente com o registro fotográfico, foram utilizados para caracterizar os padrões de escoamento e as transições, investigando-se os efeitos do diâmetro do tubo, da velocidade mássica e do fluxo de calor sobre a perda de pressão e a transferência de calor. Os principais padrões de escoamento visualizados foram: o intermitente, o anular e o

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de, Castro Silva José. "Análise experimental de sistemas de refrigeração operando com R-290 e R-600a como fluidos refrigerantes alternativos." Universidade Federal de Pernambuco, 2008. https://repositorio.ufpe.br/handle/123456789/5312.

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Made available in DSpace on 2014-06-12T17:38:02Z (GMT). No. of bitstreams: 2 arquivo3821_1.pdf: 7987098 bytes, checksum: dc96bd795cfbebffffa0b7bedb4a8308 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Os refrigerantes CFCs (clorofluorcarbonos) como o R-12, foram identificados como de alto poder destruidor da camada de ozônio que protege a superfície da terra, devido à presença de cloro em sua estrutura. Os HCFCs (hidroclorofluorcarbonos) como o R-22, por possuírem cl

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Cruz, Alvarado Martín Jesús. "Diseño, cálculo y análisis de sensibilidad de intercambiador de calor para condensación de refrigerante R-134a en ciclo de refrigeración industrial." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/9307.

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El documento digital no refiere asesor<br>Se lleva a cabo el diseño y cálculo de un condensador, que tiene la función de condensar un flujo interno de refrigerante R-134a desde vapor saturado hasta líquido saturado usando el recurso más asequible: aire ambiental. A criterio del diseñador, se elige un núcleo de banco de tubos sin aletas tomando como referencia un núcleo equivalente aleteado estudiado en referencias bibliográficas clásicas de intercambiadores de calor. Se aprecia también las condiciones para el diseño las cuales involucran datos de presión en el ingreso del refrigerante y área d

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Mabrey, Burlin Davis. "Condensation of refrigerants on small tube bundles." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/22984.

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Approved for public release; distribution is unlimited<br>The construction of an apparatus for the condensation performance testing of a horizontal bundle of four tubes with various refrigerants was completed. The apparatus was instrumented, and data reduction software was developed to provide bundle and single tube condensation data. Two tube bundles were tested, smooth copper tubes and low integral-fin copper-nickel tubes, with two refrigerants, R-114 and R-113. An enhancement ratio of about 2.0 for the overall heat transfer coefficient was demonstrated for the finned tubes over the smooth

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Brignoli, Riccardo. "Innovative technologies in HVAC&R systems for energy saving and environment preservation." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422106.

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Energy savings and the environmental impacts of energy systems are distinctive issues which have driven scientific research in heating, ventilation and air conditioning systems over the last couple of decades. The main reasons are increasing energy costs and concerns related to negative environmental impacts, in particular anthropic greenhouse effect. There are two contributors to the greenhouse effect for refrigerating systems. The first is due to the primary input energy, in large part from fossil energy, that is, organic substances which produce carbon dioxide upon burning. Therefore, if

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Toman, Petr. "Tepelné čerpadlo s chladivem R 290." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401558.

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This diploma thesis deals with design of air-water heat pump which uses natural refrigerant, propane. In the thesis there are mentioned various types of devices using the source of low-potential heat for heating. The main part of the thesis is the design of the heat pump cooling circuit. In this section, individual components are designed, the calculation and comparison of the heating factor for different operating parameters is performed. Finally, the construction of the coolant circuit and the air exchanger is designed.

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Wright, Monifa Fela. "Plate-Fin-And-Tube condenser perfomance and design for a refrigerant R-410A air-conditioner." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17296.

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Wessels, Gerriaan. "The applicability of an existing tube condenser model when used with refrigerant R-407C / Gerriaan Wessels." Thesis, North-West University, 2007. http://hdl.handle.net/10394/2063.

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Aspelund, Kristinn A. "Optimization of plate-fin-and-tube condenser performance and design for refrigerant R-410A air-conditioner." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19488.

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Books on the topic "R-134a and R-600a refrigerants"

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Baehr, H. D. Thermodynamische Eigenschaften umweltverträglicher Kältemittel : Zustandsgleichungen und Tafeln für Ammoniak, R 22, R 134a, R 152a und R 123 =: Thermodynamic properties of environmentally acceptable refrigerants : equations of state and tables for ammonia, R 22, R 134a, R 152a and R 123. Springer-Verlag, 1995.

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Ryan, Aidan M. Design optimisation techniques for refrigerant evaporators with R-134a. University College Dublin, 1998.

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Gott, Philip G. Automotive Air-Conditioning Refrigerant Service Guide. SAE International, 1996. http://dx.doi.org/10.4271/r-141a.

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Tomczyk, John. The HVAC/R professional's field guide to universal R-410A safety & training: Delta T solutions. Esco Press, 2002.

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Joe, Nott, Shaw Dick, and AC & R Safety Coalition, eds. The HVAC/R professional's field guide to universal R-410A safety & training: Delta T solutions. Esco Press, 2002.

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Thermodynamische Eigenschaften umweltverträglicher Kältemittel/Thermodynamic Properties of Environmentally Acceptable Refrigerants: Zustandsgleichungen und Tafeln für Ammoniak, R 22, R 134a, R 152a und R 123/Equations of State and Tables for Ammonia, R 22, R 134a, R 152a and R 123. Springer Berlin Heidelberg, 1995.

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The hvac/r professional's field guide to alternative refrigerants. Business News Pub., 1995.

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R-22/R-502 Alternatives: Ashrae/Nist Refrigerants Conference August 19 and 29, 1993. Amer Society of Heating, 1994.

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An experimental evaluation of medium and high pressure HFC replacements for R-22. U.S. Environmental Protection Agency, 1996.

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Mezquida, Francesc Buqué. Frigoríficos Domésticos con R-134-A y Mezclas de Refrigerantes: Técnicos de Servicio vol.2. Marcombo, 2009.

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Book chapters on the topic "R-134a and R-600a refrigerants"

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Ren, Wei, Aaron M. Scurto, Mark B. Shiflett, and Akimichi Yokozeki. "Phase Behavior and Equilibria of Ionic Liquids and Refrigerants: 1-Ethyl-3-methyl-imidazolium Bis(trifluoromethylsulfonyl)imide ([EMIm][Tf2N]) and R-134a." In Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.ch006.

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Sharma, Sudhanshu, Amit Kumar Yadav, Akash Verma, Aditya Shankar, and Manvendra Singh. "Performance Analysis of Vapor Compression Refrigeration System Using R-600a and R-134a." In Proceedings of International Conference in Mechanical and Energy Technology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2647-3_6.

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Midiani, Luh Putu Ike, Made Angga Antara, I. Wayan Adi Subagia, and I. Gede Artha Negara. "Experimental Analysis of Using R-600a Refrigerant in Undercounter Chiller Applications." In Advances in Engineering Research. Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-587-4_46.

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Das, Amar Kumar, and Ritesh Mohanty. "Performance Enhancement of Domestic Refrigeration System Using R-134a Refrigerant Blended with Graphene as Nano Additives." In Advances in Air Conditioning and Refrigeration. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6360-7_10.

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Kazi, Juned R., and Neeraj Agrawal. "Experimental Investigation of Dehumidifier Hybrid Air Conditioner Integrated Zeotropic Refrigerant Blend R-407C Air Source Water Heat Pump." In Renewable Energy and Climate Change. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9578-0_16.

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"Properties of Refrigerant R-134a." In Thermodynamics. CRC Press, 1999. http://dx.doi.org/10.1201/9780203909829.axb2.

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Cruz dos Santos, Eraldo, Carlisson Arnaud de Azevedo, Caio Luiz de Carvalho Macêdo, et al. "Comparative Exergetic Assessment for the Modernization of Synthetic Fluids by Natural Refrigerants Used in Residential and Commercial Cooling and Air Conditioning Applications." In Air Conditioning Technologies and Applications. IntechOpen, 2024. https://doi.org/10.5772/intechopen.1006817.

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Currently, in the world, there is a real race, involving several manufacturers that search for more efficient refrigerant fluids, with the need to develop new refrigerants to replace the fluids currently being used in air conditioning and refrigeration systems, aiming to maintain or improve the performance of such systems, reducing their electrical energy consumption. Therefore, this work intends to be another contribution to this scenario and aims to carry out an exergy analysis comparative of the operating characteristics of a residential Chiller system, in which the natural fluid R-290 was

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Rivetto, Geison Fabiano, Leo Fagner Lazarini de Godoi, Patrícia Bogalhos Lucente Fregolente, and Zaida Jova Aguila. "ESTUDO COMPARATIVO DA PERFORMANCE DE GASES REFRIGERANTES R-22, R-134A E R-290 EM SISTEMA DE REFRIGERAÇÃO." In Engenharia moderna: desafios interdisciplinares. Atena Editora, 2023. http://dx.doi.org/10.22533/at.ed.8072311075.

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"Properties of Refrigerant R-22." In Thermodynamics. CRC Press, 1999. http://dx.doi.org/10.1201/9780203909829.axb1.

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"Properties of Refrigerant R-12." In Thermodynamics. CRC Press, 1999. http://dx.doi.org/10.1201/9780203909829.axb3.

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Conference papers on the topic "R-134a and R-600a refrigerants"

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Yousef, Khaled, Abebayehu Assefa, Ahmed Hegazy, and Abraham Engeda. "Comparative Study of Using R-410A, R-407C, R-22 and R-134a as Cooling Medium in the Condenser of a Steam Power Plant." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25033.

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A step-by-step technique has been implemented in the analytical study of heat transfer and pressure gradient characteristics of refrigerants R-410A, R-407C, R-22 and R-134a used as cooling media in the condenser of a steam power plant. Refrigerants are optimized to replace water/air as coolant in the condenser of a steam power plant. Refrigerants have much lower temperatures and much higher heat transfer rates than water or air. The thermal resistances that affect heat transfer characteristics and surface condenser performance are included. The effect of inlet refrigerant temperature and mass

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Jabardo, J. M. Saiz, Evandro Fockink da Silva, Gherhardt Ribatski, and Samuel Freire de Barros. "Evaluation of the Rohsenow correlation through nucleate pool boiling data for refrigerants R-11, R-123, R-12, and R-134a." In International Heat Transfer Conference 12. Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.4610.

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Meyer, Josua. "THE PERFORMANCE OF THE REFRIGERANTS R-134a, R290, R404A, R-407c AND R-410A IN AIR CONDITIONERS AND REFRIGERATORS." In Thermal Sciences 2000. Proceedings of the International Thermal Science Seminar Bled. Begellhouse, 2000. http://dx.doi.org/10.1615/ichmt.2000.thersieprocvol2thersieprocvol1.80.

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Darabi, Jafar, Michael M. Ohadi, and Serguie V. Dessiatoun. "Heat Transfer Enhancement With Falling Film Evaporation on Vertical Tubes Using Electric Fields." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0611.

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Abstract The objective of this work is to characterize the phenomena and to identify the feasibility of the EHD technique for falling film evaporation on geometries of practical significance to industrial chillers. Single-tube experiments are conducted with refrigerants R-123 and R-134a on the outside of three commercially available vertical, electrically heated tubes. Tests are conducted with a 19 mm (3.4″) smooth tube, a 19 fpi tube, and a Turbo BIII tube. The effect of heat flux, refrigerant mass flow rate, and applied potential are investigated. Up to a 7 fold enhancement in heat transfer

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Kulkarni, Shridhar, Geet Shah, Sambhaji Jaybhay, and Mohit Varma. "A Methodology to Predict Mobile Air-Conditioning System (MAC) Performance for Low GWP Drop-In Refrigerant Using 1D CAE Simulation Tool." In Symposium on International Automotive Technology. SAE International, 2024. http://dx.doi.org/10.4271/2024-26-0308.

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<div class="section abstract"><div class="htmlview paragraph">In developing nations, most passenger vehicles are equipped with mobile air conditioning (MAC) systems that work on Hydro Fluoro Carbons (HFC) based refrigerants. These refrigerants have a high global warming potential (GWP) and hence adversely affect the environment. According to the Kigali amendment to Montreal Protocol, Article-5 Group-2 countries including India must start phasing down HFCs from 2028 and replace them with low Global Warming Potential (GWP) refrigerants. One such class of low GWP refrigerant is Hydro

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Hardesty, John T., Priya Raghupathi, Jamal Seyed-Yagoobi, James E. Bryan, and Markus Wawzyniak. "Effect of Fluid Properties on Electrohydrodynamically Enhanced Heat Transfer in Pool Boiling." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0845.

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Abstract The effect of fluid properties on electrohydrodynamically enhanced heat transfer in pool boiling was studied using R-123, R-134a, and R-407c as the working fluids at various pool temperatures. Two experimental boiling apparatuses were used, one electrically heated and suitable for high pressure refrigerants, and the other water heated, suitable only for low pressure refrigerants. In both cases, the pool boiling consisted of a single horizontal copper tube with the same surface finish, heated length, and outer diameter. The electrode design consisted of eight straight wires spaced radi

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Yang, Chien-Yuh, and Chih-Feng Fan. "NUCLEATE BOILING HEAT TRANSFER OF REFRIGERANTS R-134A AND R-404A ON POROUS AND STRUCTURED SURFACE TUBES." In Compact Heat Exchangers and Enhancement Technology for the Process Industries - 2003. Begellhouse, 2023. http://dx.doi.org/10.1615/978-1-56700-195-2.510.

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Meyer, Josua. "Abstract of "THE PERFORMANCE OF THE REFRIGERANTS R-134a, R290, R404A, R-407c AND R-410A IN AIR CONDITIONERS AND REFRIGERATORS"." In Thermal Sciences 2000. Proceedings of the International Thermal Science Seminar Bled. Begellhouse, 2000. http://dx.doi.org/10.1615/ichmt.2000.thersieprocvol2.120.

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Huerta, Alex A. S., Sergio L. Braga, and Jose Alberto Parise. "SIMULATION OF THE EFFECTS OF OIL ON HEAT TRANSFER DURING CONDENSATION OF REFRIGERANTS R-12 AND R-134a." In International Heat Transfer Conference 11. Begellhouse, 1998. http://dx.doi.org/10.1615/ihtc11.550.

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Javidmand, Puya, and Klaus A. Koffmann. "Numerical-Based Comparison Among Critical Flow Properties of HFC-134a and its New Alternatives HFO-1234yf and HFO-1234ze Through Short-Tube Orifices." In ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icnmm2015-48048.

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Although HFC-134a is a common refrigerant for residential and mobile refrigeration systems, investigators are dealing with replacing it with new alternatives because of its harmful environmental and global warming effects. Recently HFO-1234yf and HFO-1234ze have been introduced as suitable alternative refrigerants because they have zero ozone depletion potential (ODP) and low global warming potential (GWP) and possess thermophysical properties similar to those of HFC-134a. Because there is no experimental data on the performance of these new refrigerants in capillary tubes and short-tube orifi

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Reports on the topic "R-134a and R-600a refrigerants"

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Miller, James, Anthony Latino, Chandana Konidala, and Raymond Patenaude. Army R-22 refrigerant phase-out strategy. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40039.

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R-22 (also known as HCFC-22) is one of the most widely used refrigerants in U.S. Army air-conditioning and refrigeration (AC&R) systems since the phase-out of R-12 refrigerant in 1995. The need to phase out R-22 is attributed to its global warming potential and high ozone-depleting capability. The U.S. Army has tens of thousands of aging AC&R systems that will remain dependent on R-22, or one of the recently developed substitutes for R-22, until they reach the end of their operational life. This project conducted a survey to understand the current R-22 usage and types of R-22 AC&R

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Lowe, K. T. Floating Refrigerant Loop Based on R-134a Refrigerant Cooling of High-Heat Flux Electronics. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/886010.

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McLinden, Mark O. Refrigerant Properties Development R&D:. National Institute of Standards and Technology, 2025. https://doi.org/10.6028/nist.ir.8570.

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McLinden, Mark O. Supplemental Information for Refrigerant Properties Development R&D:. National Institute of Standards and Technology, 2025. https://doi.org/10.6028/nist.ir.8570sup1.

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Abdelaziz, Omar, Som S. Shrestha, Bo Shen, et al. Alternative Refrigerant Evaluation for High-Ambient-Temperature Environments: R-22 and R-410A Alternatives for Rooftop Air Conditioners. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1326522.

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Abdelaziz, Omar, Som S. Shrestha, Jeffrey D. Munk, et al. Alternative Refrigerant Evaluation for High-Ambient-Temperature Environments: R-22 and R-410A Alternatives for Mini-Split Air Conditioners. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1223676.

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Abdelaziz, Omar, Jeffrey D. Munk, Som S. Shrestha, et al. Alternative Refrigerant Evaluation for High-Ambient Temperature Environments: R-22 and R-410A Alternatives for Mini-Split Air Conditioners. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1209213.

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Lee, Jangho, and P. A. Domanski. Impact of air and refrigerant maldistributions on the performance of finned-tube evaporators with R-22 and R-407C. Final Report. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/513508.

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Wambsganss, M. W., J. A. Jendrzejczyk, T. N. Tran, and D. M. France. Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7226454.

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Baxter, Van D., Viral K. Patel, Ahmad Abu-Heiba, William A. Miller, Randall Lee Linkous, and Geoffrey S. Ormston. Experimental Evaluation of Refrigerant Leak Characteristics for Different HVAC&R Equipment Types. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1505323.

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