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Cryogenic Mixed Refrigerant Processes
International Journal of Refrigeration, 2010 Teaches the need for refrigerant mixtures, the type of mixtures that can be used for different refrigeration and liquefaction applications, the different processes that can be used and the methods to be adopted for choosing the components of a mixture ...
Venkatarathnam, Gadhiraju
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Real-time measurement of mixing ratio of refrigerant/refrigeration oil mixture
International Journal of Refrigeration, 2006The mixing of refrigeration oil with refrigerant in a refrigeration cycle has great influence on cycle performance. A sampling method is the most general way to measure the mixing ratio of refrigerant and refrigeration oil. Since the sampling method is time-consuming and reduces the amount of refrigerant and oil in the cycle, a real-time measurement is
Mitsuhiro Fukuta +3 more
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The Effect of Refrigerants in the Mixed Lubrication Regime
1997Because of environmental concerns, CFC (chlorofluorocarbon) refrigerants must be replaced with HFCs (hydrofluorocarbons.) As a result, many tribological problems are caused especially in rotary piston compressors. To solve the problem, the effects of refrigerants on friction and wear characteristics of the oil and refrigerant mixtures at the mixed ...
K Mizuhara, M Tomimoto
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Journal of Cleaner Production, 2018
Abstract This study progresses absorption, mixed refrigerant and mixed fluid cascade refrigeration systems in the integrated cryogenic natural gas plant. It also presents a comprehensive systematic method for designing of refrigeration cycles based on synthesis of mathematic and thermodynamic viewpoints.
Bahram Ghorbani +3 more
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Abstract This study progresses absorption, mixed refrigerant and mixed fluid cascade refrigeration systems in the integrated cryogenic natural gas plant. It also presents a comprehensive systematic method for designing of refrigeration cycles based on synthesis of mathematic and thermodynamic viewpoints.
Bahram Ghorbani +3 more
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International Journal of Refrigeration, 1991
Abstract A computer simulation of two-evaporator refrigerators charged with pure and mixed refrigerants operating on a Lorentz and Meutzner's cycle has been performed to determine possible substitutes for R12 with an improved energy efficiency. The results for pure fluids indicate that the coefficients of performance (COPs) and volumetric capacities ...
D.S Jung, R Radermacher
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Abstract A computer simulation of two-evaporator refrigerators charged with pure and mixed refrigerants operating on a Lorentz and Meutzner's cycle has been performed to determine possible substitutes for R12 with an improved energy efficiency. The results for pure fluids indicate that the coefficients of performance (COPs) and volumetric capacities ...
D.S Jung, R Radermacher
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A mixed refrigerant cycle for providing refrigeration below 70 k for superconducting applications
Indian Journal of Cryogenics, 2014There is worldwide interest in the development of mixed refrigerant cycle refrigerators and liquefiers. Most studies till date have been at temperatures greater than 70 K. However, there is a need for refrigerators working below 70 K for use in superconducting transformers, motors, generators and cables.
Vineed Narayanan, G Venkatarathnam
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Water Trap Refrigerated by a Throttle-Cycle Cooler Using Mixed Gas Refrigerant
1998The design features and the performance of the cooler are discussed to emphasize characteristics of this refrigeration system compared to other cryocoolers used for water traps. A throttle-cycle cooler based on one-stage oil-lubricated compressor provides water trap temperature in a narrow range of 115 K to 130 K depending upon the heat load on the ...
Ajay Khatri, M. Boiarski, S. Nesterov
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1999
A new approach for the thermodynamic analysis of vapor compression refrigeration machines, first presented by the authors at the IIF/IIR Conference in Sofia, Bulgaria (1998), is here both improved by removing some simplifying assumptions and applied to an existing and operating refrigeration plant in order to achieve the following objective: to test ...
DE MONTE, FILIPPO +2 more
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A new approach for the thermodynamic analysis of vapor compression refrigeration machines, first presented by the authors at the IIF/IIR Conference in Sofia, Bulgaria (1998), is here both improved by removing some simplifying assumptions and applied to an existing and operating refrigeration plant in order to achieve the following objective: to test ...
DE MONTE, FILIPPO +2 more
openaire +2 more sources