Results 221 to 230 of about 839 (259)
Some of the next articles are maybe not open access.
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
openaire +1 more source
Refrigerating machine operating characteristics under various mixed refrigerant mass charges
International Journal of Refrigeration, 2008Abstract This paper reports the results of experimental investigation of a low-temperature Joule–Thomson refrigerating machine, working by use of a non-azeotropic mixture of refrigerants and with a single-stage hermetic compressor. The temperature, hydraulic and power performance of the machine are determined experimentally in relation to the mixed ...
openaire +1 more source
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
openaire +1 more source
Double mixing chamber system on dilution refrigerator
Cryogenics, 1978Abstract A refrigerator with two successive mixing chambers is described, for which the performance can be calculated using well known parameters.
G. Frossati +3 more
openaire +1 more source
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
openaire +1 more source
Low-temperature throttling system with mixed refrigerants
Chemical and Petroleum Engineering, 2011The basic diagram of a low-temperature throttling unit with mixed refrigerants, which operates at temperatures ranging from −90°C to −110°C, is described. A procedure is proposed to optimize the startup period of the unit, which helps reduce the startup period by 1.8 times.
A. I. Lunin +3 more
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
The Preliminary Study on Mixed Refrigerants of a Four-Stage Auto-Cascade Refrigeration
Applied Mechanics and Materials, 2013A four-stage auto-cascade refrigeration cycle is presented in this paper, the kind of mixed refrigerants is chosen and the proportion is simulated by using the commercial software NIST8.0 software. The optimized proportion of mixed refrigerants is gained through experiment, a method which combining software simulation and experiment to define mixed ...
Rui Xi Liu +4 more
openaire +1 more source