Results 121 to 130 of about 765 (158)
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Tri-Technology Device Refrigeration (TTDR) III, 2018
Three miniature Joule-Thomson cryogenic coolers and a testing set up were built to investigate the cooling performance in this work. Shell-and-tube heat exchanger and plate fin heat exchangers with rectangular micro channels were designed to achieve high specific surface area.
Yinong Wu, Maoqiong Gong, Gaofei Chen
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Three miniature Joule-Thomson cryogenic coolers and a testing set up were built to investigate the cooling performance in this work. Shell-and-tube heat exchanger and plate fin heat exchangers with rectangular micro channels were designed to achieve high specific surface area.
Yinong Wu, Maoqiong Gong, Gaofei Chen
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Performance of mixed refrigerant cascade refrigerator for cooling a space simulation chamber
Indian Journal of Cryogenics, 2014A mixed refrigerant cascade (MRC) refrigeration system has been developed to replace a conventional two-stage cascade refrigeration system for the cooling of space simulation chambers. A fast cool down of the refrigerator to 193K within a time of 16 min is achieved.
Bura Sreenivas +3 more
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The Journal of Physical Chemistry B, 2020
Molecular simulations were performed to evaluate mixtures of fluorinated refrigerants with deep eutectic solvents (DESs), for potential use in single-effect absorption refrigeration cycles that use low quality waste heat sources at temperatures of ∼80 °C.
Rubaiyet Abedin +3 more
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Molecular simulations were performed to evaluate mixtures of fluorinated refrigerants with deep eutectic solvents (DESs), for potential use in single-effect absorption refrigeration cycles that use low quality waste heat sources at temperatures of ∼80 °C.
Rubaiyet Abedin +3 more
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APPLICATION OF CASCADE REFRIGERATION SYSTEM WITH MIXING REFRIGERANT IN COLD AIR CUTTING
International Journal of Modern Physics B, 2005In the mechanical cutting process, the replacement of traditional cutting solution with cold air can avoid the pollution of environment. In order to high efficient the refrigerating device and flexible adjust the temperature of cold air, it is necessary to use cascade refrigeration system to supply cool quantity for the compressed air.
Y. YANG, M. W. TONG, G. YANG, X. P. WANG
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Micro Cryogenic Coolers With Mixed Refrigerants
Volume 1: Advanced Packaging; Emerging Technologies; Modeling and Simulation; Multi-Physics Based Reliability; MEMS and NEMS; Materials and Processes, 2013A number of small electronic devices benefit from micro-scale low temperature operation. Recently we have developed micro cryogenic coolers (MCCs) using a low-pressure, mixed-refrigerant Joule-Thomson cycle. The cryocoolers utilizes a MEMS-enabled gas compressor coupled to a micro cold stage.
Ryan Lewis +5 more
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Optimal Design of Mixed Refrigerant Cycles
Industrial & Engineering Chemistry Research, 2008A new approach for the optimal design of mixed refrigerant cycles is presented. It is based on mathematical programming and offers significant improvements in relation to previous approaches. It includes multistage refrigerant compression, full enforcement of the minimum temperature difference in heat exchangers, simultaneous optimization of variables,
Frank Del Nogal +3 more
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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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Performance of two mixed refrigerant processes providing refrigeration at 70 K
Cryogenics, 2016Abstract Mixed refrigerant process refrigerators are ideal for use in superconducting transformers, fault current limiters, etc. placed in a liquid nitrogen bath. Traditional mixed refrigerant processes used above 70 K cannot be used in these applications. The performance of two mixed refrigerant processes suitable for the above applications has been
Vineed Narayanan, G. Venkatarathnam
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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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