A review on design, operation and applications of cold-compressors in large-scale helium liquefier/refrigerator systems

AA Sam, R Dutta, D Abraham, P Ghosh, A Pesyridis - Cryogenics, 2023 - Elsevier
Large-scale helium refrigerators/liquefiers are used in applications like fusion devices and
particle accelerators. Cold-compressors are employed at very low temperatures for pumping …

A cycle configuration for large-scale helium refrigerator for fusion devices towards complete mitigation of the effects of pulsed heat load

R Dutta, P Ghosh, K Chowdhury - Fusion Engineering and Design, 2013 - Elsevier
Large-scale helium refrigerators in fusion devices work in pulsed heat load condition. The
immediate effect of pulsed heat load is mass flow rate fluctuation at the low pressure return …

Dynamic simulation of DALS test facility cryoplant

Z Sun, XL Wang, LB Hu, L Xu… - IOP Conference Series …, 2024 - iopscience.iop.org
Abstract Dalian Advanced Light Source (DALS) test facility program requires a 370 W
cryoplant to meet the cooling requirements of four testbenches. The utilization of dynamic …

Mitigation of effects of pulsed heat load from fusion devices on helium refrigerator: A novel technique using vapor compression cycle

R Dutta, P Ghosh, K Chowdhury - International journal of refrigeration, 2013 - Elsevier
Helium refrigerators used in fusion devices are subjected to pulsed heat load. Immediate
effect of such load is high fluctuation of mass flow rate at the return stream. A novel …

Analysis of the cryogenic system behavior for pulsed heat load in EAST

LB Hu, M Zhuang, ZW Zhou, GH Xia - AIP Conference Proceedings, 2014 - pubs.aip.org
EAST is the first full superconducting fusion device. The plasma is confined by the magnetic
fields generated from a large set of superconducting magnets which are made of cable in …

Identification of critical equipment and determination of operational limits in helium refrigerators under pulsed heat load

R Dutta, P Ghosh, K Chowdhury - Cryogenics, 2014 - Elsevier
Large-scale helium refrigerators are subjected to pulsed heat load from tokamaks. As these
plants are designed for constant heat loads, operation under such varying load may lead to …

Heat transfer enhancement phenomena and pressure drop characteristics in two-phase pulsating flow using R-134A

Y Zhang - 2017 - ideals.illinois.edu
The heat transfer and pressure drop aspect of a saturated two-phase flow imposed to
periodic inlet mass flow rate were studied using both experimental and modeling …

Dynamic behavior of cryogenic system under plasma discharge in EAST

LB Hu, XF Lu, ZY Zhang - 2017 - inis.iaea.org
The plasma is confined by the magnetic fields generated from a large set of superconducting
magnets which are made of cable in-conduit conductor (CICC) in the fusion reactors like …

[PDF][PDF] Designing process plant with pulsating loads: Exergy analysis of helium plants for fusion reactors

Cryogenic plants operate, typically, in the temperature range of 4.2 K to 123 K with
applications in medical and biological fields, in aerospace engineering, in superconductivity …

[PDF][PDF] Application of plate-fin heat exchangers in mitigating the effects of pulsed heat load

C Lv, JH Wu, Q Li, XJ Xie, LF Li, HM Liu - indico.cern.ch
The heat loads of the superconducting magnets in the international fusion devices are
pulsating with time, which will cause the variation of the return mass flow rate of the …