A5100767216- Advanced Thermodynamic Systems and Engines
- Advanced Thermodynamics and Statistical Mechanics
- Spacecraft and Cryogenic Technologies
- Refrigeration and Air Conditioning Technologies
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Superconducting Materials and Applications
- Superconducting and THz Device Technology
- Thermal Radiation and Cooling Technologies
- Frequency Control in Power Systems
- Spectroscopy and Laser Applications
- Electric Motor Design and Analysis
- Silicon Carbide Semiconductor Technologies
- Infrared Target Detection Methodologies
- Magnetic confinement fusion research
- Atmospheric Ozone and Climate
- Superconductivity in MgB2 and Alloys
- Calibration and Measurement Techniques
- Gas Sensing Nanomaterials and Sensors
- Physics of Superconductivity and Magnetism
- Thermography and Photoacoustic Techniques
Shanghai Institute of Technical Physics
2017-2024
University of Chinese Academy of Sciences
2017-2024
Chinese Academy of Sciences
2017
In response to the growing threats posed by frequent wildfires ecological environments and human safety, this study presents development of a lightweight, spaceborne, multispectral, uncooled infrared remote sensing camera specifically designed for wildfire monitoring. To address low detection sensitivity VOx instruments, multi-point precision temperature control technique spatiotemporal stacking method are implemented. Furthermore, compact design assembly approach endows with weight, small...
The superconducting nanowire single photon detector (SNSPD) plays an important role in quantum key distribution, satellite laser ranging, and space communication, etc. required temperature of around 2K poses a significant challenge for the suitable cryogenic system. Especially, when used space, emphasized high reliability, long operation life time, limited room, power supply make more formidable. pulse tube cryocooler (PTC) without any moving component at cold end has intrinsic merits...
This paper presents a 1-2 K cryogenic system for cooling the superconducting nanowire single-photon detector (SNSPD). The is based on Stirling-type pulse tube cryocooler (SPTC) and Joule-Thompson (JT) technologies thus named as hybrid system. It eliminates any moving component at cold end which endows it with evident advantages over Gifford-McMahon (GM) in terms of low vibration, electromagnetic interference (EMI) long life. can operate has an expected mean-time-to-failure 10 years. overall...
A project to develop a 10-Mvar high temperature-superconducting (HTS) dynamic synchronous condenser (DSC) is carried out by China Southern Power Grid Corporation. In order cool the magnets 20–30 K, set of cryogenic system using circulating helium as working fluid was developed, and it has been coupled tested with 300-kvar class condenser. Three coolers are used cold source provide more than 120 W@20 K cooling power. Cryogenic pump employed overcome pressure drop about 2.5 kPa induced gas in...
This paper presents a review of recent advances in single- and multi-stage Stirling-type pulse tube cryocoolers (SPTCs) for space applications developed at the National Laboratory Infrared Physics, Shanghai Institute Technical Chinese Academy Sciences (NLIP/SITP/CAS). A variety single-stage SPTCs operating 25–150 K have been developed, including several mid-sized ones 80–110 K. Significant progress has achieved coolers 30–40 which use common stainless steel meshes as regenerator matrices....
This paper reviews recent advances in Stirling-type pulse tube cryocoolers (SPTCs) developed the authors' laboratory, which single- and two-stage coolers cover 10–150 K while three- four-stage ones operate at 4–10 K. The cooling capacities vary from 1.0 W for optical electronic devices to 580 77 superconducting cables, overall masses range 700 g 180 kg. three-stage SPTCs are mainly applications around 10 K, directly achieve liquid helium temperature. can simultaneously acquire powers three...
量子信息技术以及深空探测领域的蓬勃发展，对2 K以下温区高可靠、长寿命、小型轻量化、高制冷效率低温制冷机的需求日益迫切，高频脉冲管耦合Joule-Thomson（JT）的复合制冷循环是实现这一目标的重要手段。目前国际上以该循环获得2 K以下温区的实践，均是在脉冲管分系统使用氦-4而JT分系统使用氦-3的情况下获得的。氦-3在地球上存量稀少、价格高昂，是阻碍这一循环在更广范围内实用化的关键瓶颈。本文对以氦-4为唯一工质的四级高频脉冲管耦合JT的复合制冷循环开展了理论与实验研究，分析了基于该循环获取2 K以下温度的关键难点和可行性，从采用间隙密封的直流线性压缩机的低压压力和多级间壁式回热器的低压侧压降损失入手，理论预测出在40 kPa系统充气压力下可实现1.1 kPa的压缩机吸气压力和438.6 Pa的低压侧总压降，从而能获得1.54 kPa的饱和蒸气压，此时采用氦-4节流可实现1.78...
A 5T, 204 mn warm bore superconducting magnet system for the HEMS-1 MHD model ship has been successfully developed, tested and used helical thruster development operation. The includes a high current density, close-packed, wax-filled solenoid with 422 kJ stored magnetic energy, mm bore, horizontal, lightweight, low heat losses dewar 1 KA persistent operation system. total weight of whole is 494 kg. test results show that average LHe consumption 0.341/hr. can be operated about 170 hours...
The increasingly widespread application of superconducting nanowire single-photon detectors (SNSPDs) in space quantum communication, satellite laser ranging, and optical computing has also generated a growing demand for compact, lightweight, low-vibration cryogenic systems operating below 2 K. To meet the needs, system consisting Stirling-type pulse tube cryocooler (SPTC) Joule-Thomson (JT) been developed, which significant advantages terms low vibration, long lifetime high reliability. This...
High-precision temperature control of large-area blackbodies has a pivotal role in calibration and thermal imaging correction. Meanwhile, it is necessary to correct the difference between radiating (surface use) back surfaces (where sensor installed) blackbody during testing phase. Moreover, are usually composed multiple channels, manual correction this scenario error-prone inefficient. At present, there no method that can achieve temperature-automated for radiation source. Therefore,...
Gas cloud imaging with uncooled infrared spectroscopy is influenced by ambient temperature, complicating the quantitative detection of gas concentrations in open environments. To solve aforementioned challenges, paper analyzes main factors influencing errors and proposes a temperature correction method to address them. Firstly, mitigate environmental effects on radiative output detectors, snapshot-based, multi-band compensation algorithm incorporating awareness was developed. This enables...