Conveners
Thu-Mo-Posters Session 3.1: Cryogenics Components and Space Applications
- John Vandore
Mr
Marc Dietrich
(TransMIT GmbH)
10/07/2014, 10:30
C-04: Space cryogenic applications
Poster presentation (105min)
Recently, we designed and built a proof-of-concept heat switch for space applications based on the high thermal expansion coefficient (CTE) of Ultra-High-Molecular-Weight-Polyethylene (UHMW-PE). The initial design showed a reliable switching performance [1]. A new design is proposed which is focused on lower mass and increased reliability, as well as a better understanding of the CTE material...
Prof.
Parthasarathi Ghosh
(Cryogenic Engineering Centre, Indian Institute of Technology Kharagpur, India-721302)
10/07/2014, 10:30
C-03: Expanders, Pumps, compressors, regenerators and other components
Poster presentation (105min)
The demand for low temperature operations for liquefaction and refrigeration at cryogenic temperature, for air separation, gas purification, superconductivity etc has necessitated the need for improvement in turboexpander performance in terms of isentropic efficiency. The design of turboexpander for liquefaction systems is quite critical at low temperatures due to process conditions such as...
HIDEKI TATSUMOTO
(Japan Atomic Energy Agency)
10/07/2014, 10:30
C-03: Expanders, Pumps, compressors, regenerators and other components
Poster presentation (105min)
At the J-PARC spallation neutron source, supercritical hydrogen with a pressure of 1.5 MPa and a temperature below 20 K is used as a moderator material. The total nuclear heating at the moderators is estimated to be 3.8 kW for 1-MW proton beam operation. The temperature rise at the moderators should be reduced below 3.0 K to provide a pulsed cold neutron beam. A centrifugal pump with dynamic...
Sungwoon Yoon
(Institute for basic science)
10/07/2014, 10:30
C-03: Expanders, Pumps, compressors, regenerators and other components
Poster presentation (105min)
The first Korean heavy-ion linac, Raon, is based on superconducting radio frequency (SRF) cavities. These cavities will be operated at sub-atmospheric pressures, 2 K. For performance tests of cavities and cryomodules, the SRF test facility of the Raon needs a dedicated heat recuperating system, the 2K-module. Similar to the system of other institutes, the 2K-module of Raon consists of a heat...
Prof.
Maruti Khot
(Mechanical Engineering Department, Walchand College of Engineering Sangli)
10/07/2014, 10:30
Poster presentation (105min)
Nowadays linear compressors are commonly used in miniature cryocoolers instead of rotary compressors because rotary compressors apply large radial forces to piston, which provide no useful work, cause large amount of wear and usually require lubrication. Recent trends however favour flexure supported configuration for long life. The present work aims at design and geometrical optimization of...
Mrs
Zhenzhen ZHENG
(Institude of Cryogenics and Electronics, Hefei, 230043, PR China)
10/07/2014, 10:30
C-03: Expanders, Pumps, compressors, regenerators and other components
Poster presentation (105min)
The attention is focused on the Stirling cryocooler driven by a moving magnet linear motor because of its advantages of high efficiency, small vibration, and long life. In order to find the parameters influencing the efficiency of the compact Stirling cryocooler, a linear motor structure was proposed and designed, the performance of the cooler is experimentally optimized. The relationship...
Dr
Lei Wang
(Xi'an Jiaotong University)
10/07/2014, 10:30
C-04: Space cryogenic applications
Poster presentation (105min)
Heat and mass transfer process at gas-liquid interface exerts significant influence on pressurization performance of cryogenic storage tank. In this paper, an improved CFD model adapted to multi-component and two-phase is constructed to describe the heat and mass transfer effect within the propellant tank considering the existence of pressurizing helium. In the model, the temperature...
Pavitra Sandilya
(Indian Institute of Technology Kharagpur)
10/07/2014, 10:30
C-04: Space cryogenic applications
Poster presentation (105min)
Injection cooling was proposed to store cryogenic liquids (1,2). When a non-condensable gas is injected through a liquid, the liquid component would evaporate into the bubble if its partial pressure in the bubble is lower than its vapor pressure. This would tend to cool the liquid.
Earlier works on injection cooling (1,2,3) analysed the cooling process by considering instantaneous mass...
Prof.
yinong Wu
(Shanghai Institute of Technical Physics, CAS)
10/07/2014, 10:30
C-04: Space cryogenic applications
Poster presentation (105min)
A single-stage coaxial pulse tube cryocooler (PTC) has been designed, manufactured and tested at Shanghai Institute of Technical Physics (SITP), Chinese Academy of Sciences (CAS) for cooling an aerospace low temperature refrigerator (LTR) whose cooling volume is 20 liters. An experimental setup has been designed and fabricated and some experimental investigations have been carried out and...
