Results 61 to 70 of about 785 (181)

Experimental study of effects of buffer tank volume on pressure pulsation in valved linear compressor's pipe system at different frequencies

open access: yesXibei Gongye Daxue Xuebao
The valved linear compressor (VLC) is an essential part of the Joule-Thompson (J-T) throttling cryocooler in the liquid helium temperature region. The pressure pulsation may cause the fluctuation of the temperature and cooling capacity of the cryocooler,
HUANG Qi   +6 more
doaj   +1 more source

Development of A Super High Speed Permanent Magnet Synchronous Motor (PMSM) Controller and Analysis of The Experimental Results [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2005
This paper presents the design and implementation of a DSP-based controller for a super high-speed (>80,000 rpm) permanent magnet synchronous motor (PMSM).
Limei Zhao   +8 more
doaj  

Experiment Study on Compositions Shift in a Multicomponent Mixed-Refrigerant Joule-Thomson Cryocooler Driven by an Oil-free Compressor

open access: yesZhileng xuebao, 2006
An experimental system driven by an oil- free compressor was developed to investigate the dynamic characteristics of the mixture composition variations in the closed throttling refrigeration cycle.
Deng Zhaobin, Gong Maoqiong, Wu Jianfeng
doaj   +2 more sources

Analysis of streaming effects in stirling-type inertance pulse tube cryocoolers using computational fluid dynamics

open access: yesEngineering Applications of Computational Fluid Mechanics
To look inside a pulse tube for streaming effects beyond 5–6 Hz is not possible experimentally. Therefore, CFD is a reliable tool for observing the streaming effects occurring in a cryocooler.
Rajendra Kumar   +2 more
doaj   +1 more source

PERFORMANCE ENHANCEMENT OF A MINIATURE STIRLING CRYOCOOLER WITH A MULTI MESH REGENERATOR DESIGN [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
A parametric study has been carried out using the software REGEN 3.3 to optimize the regenerator of a miniature Stirling cryocooler operating with a warm end temperature of 300 K and cold end temperature of 80 K.
KISHOR KUMAR V. V., BIJU T. KUZHIVELI
doaj  

The Performance of Pulse Tube Cryogenic Cryocooler with Multi-metal-mesh Filled Regenerator

open access: yesZhileng xuebao, 2015
As the key component of the pulse tuber cryocooler, the regenerator plays a vital role on the thermal performance. In order to analyze the effect of the filled metal meshes on the thermal performance of regenerator, the real single-stage pulse tube ...
Kan Ankang, Zhang Ankuo, Wu Yinong
doaj  

MODELLING AND FAILURE ANALYSIS OF FLEXURE SPRINGS FOR A STIRLING CRYOCOOLER [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
In the range of milliwatt to a few watts cooling capacity, Stirling cycle and pulse tube coolers are most suitable for producing cryogenic temperatures owing to their eco-friendliness, high efficiency, cooling capacity to mass ratio etc.
RAJESH V. R., BIJU T. KUZHIVELI
doaj  

Flow Characteristics and Sound Power Transmission Characteristics of Bellows in Pulse Tube Cryocooler

open access: yesZhileng xuebao
Compressor outlet tube is a transmission component of sound power, and its sound power loss directly affects the performance of pulse tube cryocooler.
木松松   +7 more
doaj  

Experimental Investigation on a Miniature Mixed Refrigerant J-T Refrigerator Driven by a Mini-Compressor

open access: yesZhileng xuebao, 2013
The cool-down performance of a miniature mixed refrigerant J-T refrigerator was experimentally investigated. A miniature mixed refrigerant J-T refrigerator driven by an Aspen mini-compressor was developed, and preliminary test results were presented. The
Yan biao, Gong maoqiong, Wu jianfeng
doaj  

Three-Stage Thermally Coupled Stirling/Pulse Tube Hybrid Cryocooler

open access: yesZhileng xuebao
Low-temperature superconductivity and space exploration urgently require compact, highly reliable, and long-lifespan cooling technologies that operate at the liquid-helium temperature.
Li Zhengkun   +3 more
doaj  

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