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Systematic thermodynamic approach for designing mixed refrigerants used in hydrogen precooling process [PDF]
International Journal of Hydrogen Energy, 2022 Designing an optimal mixed-refrigerant (MR) composition for any cryogenic refrigeration process plays a key role in the process overall performance. However, the existing approaches of developing mixed-refrigerants for these processes are difficult, time-
Ahmad K Sleiti, Wahib A Al-Ammari
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Properties of Gas Mixtures and Their Use in Mixed-Refrigerant Joule-Thomson Refrigerators
AIP Conference Proceedings, 2004The Joule‐Thomson (J‐T) effect has been widely used for achieving low temperatures. In the past few years, much progress has been made in better understanding the working mechanism of the refrigeration method and in developing prototypes for different applications. In this talk, there are three aspects of our research work to be discussed.
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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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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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Cryogenic Mixed Refrigerant Processes
International Journal of Refrigeration, 2010openaire +1 more source