Development of Pulse Tube Cryocoolers at SITP for Space Application
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Low Temperature Physics"
DOI: 10.1007/s10909-018-1871-x
Abstract: Over the last 10 years, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, has developed very high-efficiency pulse tube cryocoolers (PTCs) for aerospace applications. These PTCs can provide cooling power from milliwatt scale to tens… read more here.
Keywords: tube cryocoolers; space; development pulse; physics ... See more keywords
Numerical simulation of a GM-type pulse tube cryocooler system: Part I. Characterization of compressors
Sign Up to like & getrecommendations! Published in 2017 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2016.11.002
Abstract: For the numerical simulation of GM-type pulse tube cryocoolers (GMPTCs), several compressors with different input powers were characterised under static conditions, including their mass flow, input power, discharge and suction pressures. Based on the measured… read more here.
Keywords: pulse tube; simulation type; numerical simulation; type pulse ... See more keywords
An approach for estimating acoustic power in a pulse tube cryocooler
Sign Up to like & getrecommendations! Published in 2017 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2017.08.009
Abstract: Abstract Acoustic power at the cold end of regenerator is the measure of gross cooling capacity for a pulse tube cryocooler (PTC), which cannot be measured directly. Conventionally, the acoustic power can only be derived… read more here.
Keywords: acoustic power; estimating acoustic; power; regenerator ... See more keywords
Theoretical and experimental study of a gas-coupled two-stage pulse tube cooler with stepped warm displacer as the phase shifter
Sign Up to like & getrecommendations! Published in 2018 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2018.03.008
Abstract: Abstract A compact and high efficiency cooler working at liquid hydrogen temperature has many important applications such as cooling superconductors and mid-infrared sensors. This paper presents a two-stage gas-coupled pulse tube cooler system with a… read more here.
Keywords: phase shifter; pulse tube; warm displacer; stepped warm ... See more keywords
An alternative observation on the orifice pulse tube cryocooler and analysis through the unified model of cryocoolers
Sign Up to like & getrecommendations! Published in 2018 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2018.08.001
Abstract: Abstract A new observation of the orifice pulse tube (OPT) cryocooler is proposed and analyzed on the ground of the unified model of cryocoolers. The elementary temperature reduction mechanism is modeled and verified through the… read more here.
Keywords: unified model; orifice pulse; model cryocoolers; observation orifice ... See more keywords
Stirling pulse tube cryocooler using an active displacer
Sign Up to like & getrecommendations! Published in 2018 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2018.10.004
Abstract: Abstract An in-line pulse tube cryocooler with an active displacer has been built and its performance has been examined in detail by experimental measurements and numerical modelling. An active displacer allows the mass flow at… read more here.
Keywords: tube cryocooler; pulse tube; active displacer; cryocooler ... See more keywords
Movement of linear compressor and displacer in a displacer pulse tube refrigerator
Sign Up to like & getrecommendations! Published in 2019 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2018.12.001
Abstract: Abstract Till now, the efficiency of the pulse tube refrigerator with inertance tube as phase shifter is still lower than that of Stirling refrigerator. One of the reasons is that the expansion power from the… read more here.
Keywords: linear compressor; pulse tube; tube refrigerator; refrigerator ... See more keywords
Numerical and experimental study of VM type pulse tube cryocooler with multi-bypass operating below 4 K
Sign Up to like & getrecommendations! Published in 2019 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2019.01.004
Abstract: Abstract The Vuilleumier (VM) type pulse tube cryocooler (VPTC) is a new kind of 4 K cryocooler which had been experimentally verified. This paper presents the recent advances on a 4 K VPTC in our laboratory. First,… read more here.
Keywords: cryocooler; type pulse; multi bypass; tube cryocooler ... See more keywords
Numerical modelling of a coaxial Stirling pulse tube cryocooler with an active displacer for space applications
Sign Up to like & getrecommendations! Published in 2020 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2020.103048
Abstract: Abstract A numerical model for a coaxial Stirling pulse tube cryocooler with an active displacer has been developed. An active displacer, in place of an inertance tube, has already demonstrated good efficiency in an in-line… read more here.
Keywords: coaxial stirling; active displacer; displacer; cryocooler ... See more keywords
Low input power 4 K pulse tube cryocooler driven by an inverter helium compressor: Intrinsic temperature oscillations and mechanical vibrations
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DOI: 10.1016/j.cryogenics.2020.103085
Abstract: Abstract We report on the intrinsic mechanical vibrations and thermal oscillations of a small-scale two-stage pulse tube cryocooler operated by an inverter driven helium compressor. The combination offers a cooling power ranging from 35 to… read more here.
Keywords: mechanical vibrations; compressor; power; cryocooler ... See more keywords
Systematic approach to determine the transient cooling power and heat leak of a commercial pulse tube cryocooler
Sign Up to like & getrecommendations! Published in 2020 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2020.103228
Abstract: Abstract In a typical pulse tube cryocooler application, modeling the cool-down dynamics of a load attached to the cold tip require knowledge of the transient cooling power. Although this data may be calculated for in-house… read more here.
Keywords: tube cryocooler; transient cooling; cooling power; transient ... See more keywords