Cryogenics最新文献

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Experimental study of cryogenic flow quenching of stainless steel tubes with thickness-gradient Teflon coatings 厚度梯度聚四氟乙烯涂层不锈钢管低温流淬实验研究
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-23 DOI: 10.1016/j.cryogenics.2025.104127
Chunkai Guo, Yuhang Wang, Peng Zhang
{"title":"Experimental study of cryogenic flow quenching of stainless steel tubes with thickness-gradient Teflon coatings","authors":"Chunkai Guo,&nbsp;Yuhang Wang,&nbsp;Peng Zhang","doi":"10.1016/j.cryogenics.2025.104127","DOIUrl":"10.1016/j.cryogenics.2025.104127","url":null,"abstract":"<div><div>Applying a low thermal conductivity coating layer to the inner wall of the tubes is a promising approach to accelerating the chilldown process, with extensive research focusing on the impact of coating thickness on the chilldown performance. It was concluded that there exists an optimal thickness of the coating layer for shortening chilldown time. However, the optimal thickness is apparently not uniform along the axis of tube due to the variation of heat transfer characteristics at different axial positions. Therefore, the chilldown behavior of tubes with uniform coating thicknesses ranging from 24 µm to 201 µm and the tube with thickness-gradient coating layer of approximately 146 µm to 71 µm along the axial direction are investigated by conducting horizontal flow quenching experiments using liquid nitrogen at different inlet pressures. It is found that, when liquid nitrogen flows from the thick coating layer (146 µm) side to the thin coating layer (71 µm) side, the chilldown time is reduced by 12.1–16.3% compared to the opposite flow direction, and by 7.1% compared to the uniform-coated tube with similar average thickness. It can be concluded that the thicker coating layer upstream allows earlier emergence of transition boiling, thereby accelerating the film boiling process downstream. The Leidenfrost point temperature upstream is higher than that downstream due to the increased solid-liquid contacts. Additionally, the pressure drop measurement throughout the tube reveals that the onset of the transition boiling intensifies flow turbulence, and consequently enhances heat transfer of film boiling downstream.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104127"},"PeriodicalIF":1.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of spark plasma sintering on the superconducting properties of Sm-based oxypnictide 火花等离子烧结对sm基氧nictide超导性能的影响
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-22 DOI: 10.1016/j.cryogenics.2025.104125
Mohammad Azam , Tatiana Zajarniuk , Konrad Kwatek , Paolo Mele , Shiv J. Singh
{"title":"Effect of spark plasma sintering on the superconducting properties of Sm-based oxypnictide","authors":"Mohammad Azam ,&nbsp;Tatiana Zajarniuk ,&nbsp;Konrad Kwatek ,&nbsp;Paolo Mele ,&nbsp;Shiv J. Singh","doi":"10.1016/j.cryogenics.2025.104125","DOIUrl":"10.1016/j.cryogenics.2025.104125","url":null,"abstract":"<div><div>We optimize the superconducting properties of Sm-based oxypnictide (Sm1111: SmFeAsO<sub>0.80</sub>F<sub>0.20</sub>) by using the Spark Plasma Sintering (SPS) technique under various synthesis conditions, including heating temperatures ranging from 600 to 1000 °C for durations of 5 to 30 min at the applied pressure of 45 MPa. All prepared bulks are characterized by structural and microstructural analysis as well as transport and magnetic measurements to conclude our findings. SmFeAsO<sub>0.80</sub>F<sub>0.20</sub> bulks are also prepared using the conventional synthesis process at ambient pressure (CSP) and the high gas pressure and high temperature (HP-HTS) methods at 500 MPa, which exhibit a superconducting transition temperature (<em>T<sub>c</sub></em>) of 53–54 K. Interestingly, the SPS process of SmFeAsO<sub>0.80</sub>F<sub>0.20</sub> increases the sample densities up to 97–98 % and confirms the optimized synthesis conditions of 900 °C for 5–10 min; however, the increased sintering temperature or duration reduces <em>T<sub>c</sub></em> due to the possible evaporation of lighter elements, particularly fluorine. Furthermore, the SPS technique is unable to reduce the observed impurity phases for the Sm1111, which is similar to the CSP and HP-HTS processes. A slight increment in the <em>J<sub>c</sub></em> by the SPS process is observed due to the enhancement of sample density. A comparative analysis of Sm1111 superconductors prepared by SPS is performed with CSP and HP-HTS processes, suggesting that an increased sample density is ineffective on the superconducting properties in the presence of the impurity phases. This finding can be beneficial for the fundamental and applied research of iron-based superconductor (FBS).</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104125"},"PeriodicalIF":1.8,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-parametrical investigation on the start-up of nitrogen pulsating heat pipes for space applications 空间用氮气脉动热管启动的多参数研究
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-19 DOI: 10.1016/j.cryogenics.2025.104115
Penghui Wang , Dong Xu , Peng Jia , Yaran Shi , Rendong Guo , Laifeng Li
{"title":"Multi-parametrical investigation on the start-up of nitrogen pulsating heat pipes for space applications","authors":"Penghui Wang ,&nbsp;Dong Xu ,&nbsp;Peng Jia ,&nbsp;Yaran Shi ,&nbsp;Rendong Guo ,&nbsp;Laifeng Li","doi":"10.1016/j.cryogenics.2025.104115","DOIUrl":"10.1016/j.cryogenics.2025.104115","url":null,"abstract":"<div><div>The successful startup of a pulsating heat pipe is crucial for ensuring its stable operation both on ground-based applications and, even more in space conditions. Indeed, under microgravity conditions, the startup behavior of the pulsating heat pipe differs significantly from that observed under normal gravity. Consequently, it is vital to conduct comprehensive research into the startup mechanisms of the pulsating heat pipe under zero-gravity conditions. A systematic analysis was conducted on how initial vapor–liquid distribution, filling ratio, assembly parameter, and thermal load influence the startup characteristics of nitrogen PHPs by ground-based horizontal experiments. The results showed that initial vapor–liquid distribution was key in determining startup success. Precooling and filling in the horizontal orientation inevitably led to startup failure. In contrast, performing precooling and filling in the vertical orientation or modifying the initial vapor–liquid distribution by heating the condenser facilitated the startup of the pulsating heat pipe in the horizontal orientation. With a 20% filling ratio, the PHPs could successfully start up and operate across a broad thermal load range, ensuring efficient heat transfer. With a 40% filling ratio, periodic flow stagnation tended to occur inside the PHPs. With a 60% filling ratio, the PHPs struggled to start successfully. Even when startup occurred, its operational thermal load range for efficient heat transfer was limited. Moreover, increasing the number of turns has helped to minimize fluctuations in the evaporator temperature and PHP pressure during operation. A double-loop configuration has also greatly enhanced the temperature uniformity of the evaporator. Among the three configurations, the single-loop 12-turn PHP exhibited the optimal heat transfer performance at a 20% filling ratio.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104115"},"PeriodicalIF":1.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and application of a measurement system for effective thermal conductivity in cryocooler regenerators 制冷机蓄热器有效导热系数测量系统的研制与应用
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-19 DOI: 10.1016/j.cryogenics.2025.104114
Takashi Hirayama
{"title":"Development and application of a measurement system for effective thermal conductivity in cryocooler regenerators","authors":"Takashi Hirayama","doi":"10.1016/j.cryogenics.2025.104114","DOIUrl":"10.1016/j.cryogenics.2025.104114","url":null,"abstract":"<div><div>In regenerative cryocoolers, the regenerator is composed of stacked layers of the regenerator material in the form of wire meshes or spheres, and the voids of the regenerator are filled with a working fluid, such as helium gas. Thermal conduction loss occurs in the regenerator because of the large temperature difference between its hot and cold sides. It is important to develop a high-efficiency cryocooler to estimate accurately thermal conduction loss. However, it is difficult to estimate the effective thermal conductivity of these complex structures. Therefore, in this study, we developed a new effective thermal conductivity measurement system that can emulate the operating environment of a cryocooler. The soundness of the developed system was confirmed by measuring the thermal conductivity of SUS304. We also measured the thermal conductivities of stacked lead alloy spheres and zinc spheres, and the voids of the stacks were filled with helium gas, which is a typical regenerator for cryocoolers. Measurements were performed in the temperature range of 5–50 K and the pressure range of 0.5–2.5 MPa. A regression analysis revealed that effective thermal conductivity of regenerator was only dependent on the thermal conductivity of the helium gas.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104114"},"PeriodicalIF":1.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical investigation on evaluation of leakage and explosion overpressure at liquid hydrogen receiving terminal 液氢接收端泄漏和爆炸超压评定的数值研究
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-17 DOI: 10.1016/j.cryogenics.2025.104117
Jianbin Peng, Ming Li, Xuan Huang, Junlong Xie, Jianye Chen
{"title":"Numerical investigation on evaluation of leakage and explosion overpressure at liquid hydrogen receiving terminal","authors":"Jianbin Peng,&nbsp;Ming Li,&nbsp;Xuan Huang,&nbsp;Junlong Xie,&nbsp;Jianye Chen","doi":"10.1016/j.cryogenics.2025.104117","DOIUrl":"10.1016/j.cryogenics.2025.104117","url":null,"abstract":"<div><div>Liquid hydrogen receiving terminal (LHRT) is exposed to great hydrogen-leakage threat due to the frequent operation and complex components. The evaluation of the consequences resulting from a potential liquid hydrogen (LH2) leakage is therefore essential. Numerical simulation of LH2 leakage based on a pseudo-source model was conducted at the operational Kobe LHRT in Japan. The consequences of leakage duration and rate under the current station structure were assessed in terms of both dispersion and explosive overpressure hazards. The results show that considering the prevailing northerly winds in the city of Kobe, leakage from a downwind jet was expected to produce the most serious hazard, with the hazard of leakage and the risk of explosion overpressure increasing sharply in the first 100 s after leakage and stabilising thereafter. It is also discovered that leakage rate has a bigger influence on accidents than leakage duration. Furthermore, the global maximum explosion pressure exceeds 0.3447 bar. The administrative buildings will be substantially affected if the leaking diameter exceeds 15 mm and the duration exceeds 100 s.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104117"},"PeriodicalIF":1.8,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intermittent operation of flux pump to maintain persistent current mode in high-temperature superconducting magnets 在高温超导磁体中间歇运行磁通泵以保持持续电流模式
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-17 DOI: 10.1016/j.cryogenics.2025.104116
Chenghuai Wu, Wei Wang, Mengchao Zhang, Haoyan Liu, Li Zhou, Peng Liu, Lin He, Yan Li
{"title":"Intermittent operation of flux pump to maintain persistent current mode in high-temperature superconducting magnets","authors":"Chenghuai Wu,&nbsp;Wei Wang,&nbsp;Mengchao Zhang,&nbsp;Haoyan Liu,&nbsp;Li Zhou,&nbsp;Peng Liu,&nbsp;Lin He,&nbsp;Yan Li","doi":"10.1016/j.cryogenics.2025.104116","DOIUrl":"10.1016/j.cryogenics.2025.104116","url":null,"abstract":"<div><div>The high-temperature superconducting (HTS) travelling-wave flux pump is a groundbreaking power source designed for wirelessly supply power to HTS magnets. The physical origin of its DC voltage is the macroscopic magnetic coupling effect. It can entirely replace traditional contact-type power supplies and their current leads which add thermal load. Currently, when HTS travelling-wave flux pumps sustain the Persistent Current Mode (PCM) in HTS magnets, it is unavoidable to have AC losses within the HTS magnets. These losses increase the demand on the cooling system and compromise the precision of the controlled current. This paper achieves the intermittent operation of the flux pump by simultaneously switching on-off the AC travelling magnetic wave and DC bias magnetic field of the linear-motor type flux pump through closed-loop feedback control. This control method stabilizes the flux pump’s output current within a specific range, thereby maintaining the PCM in the HTS magnet. The benefit of this control strategy is enhanced current control precision and reduced system operational energy consumption. In the experiments conducted in this study, for an HTS magnet with an inductance of 1.31 mH operating at a temperature of 77 K, maintaining the load current at 77 %I<sub>c</sub> (i.e. 60 A), the reduction in the current ripple factor is to 3.3 ‰, a 34 % improvement over the 5 ‰ ripple factor when only the DC bias magnetic field was controlled for feedback. Additionally, the flux pump’s operation duty cycle is 12.5 %, representing an 89 % decrease in energy consumption compared to the previous setup where only the DC bias coil was controlled.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104116"},"PeriodicalIF":1.8,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Helium isotope separation technology: A comprehensive review and perspective 氦同位素分离技术综述与展望
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-15 DOI: 10.1016/j.cryogenics.2025.104113
Kun Wang , Yi Liao , Weijie Guo , Xuming Liu , Changzhao Pan
{"title":"Helium isotope separation technology: A comprehensive review and perspective","authors":"Kun Wang ,&nbsp;Yi Liao ,&nbsp;Weijie Guo ,&nbsp;Xuming Liu ,&nbsp;Changzhao Pan","doi":"10.1016/j.cryogenics.2025.104113","DOIUrl":"10.1016/j.cryogenics.2025.104113","url":null,"abstract":"<div><div>Helium is a light, rare gas element whose isotopes have very important applications in the fields of defense and security, energy technology, and frontier technology. Helium has two stable isotopes, helium-3 (<sup>3</sup>He) and helium-4 (<sup>4</sup>He), with the natural abundance of <sup>4</sup>He being much higher than that of <sup>3</sup>He. <sup>4</sup>He is widely used in cryogenic refrigeration, Aerospace wind tunnel testing and Industrial leak detection, whereas <sup>3</sup>He plays a key role in neutron detectors, deuterium-<sup>3</sup>He fusion, and cryogenic refrigeration. Currently, the only industrial source of <sup>3</sup>He is the radioactive decay of tritium in nuclear reactors. However, the increasing demand for <sup>3</sup>He in recent years has led to the exploration of a number of other potential avenues of obtaining it. In this paper, we summarize the various techniques for helium isotope separations to date, including cryogenic superleak, heat flush, cryogenic distillation, cryogenic adsorption, and a number of other less commonly used separations. We provide a detailed discussion and comparison of these methods. Finally, the paper summarizes and analyzes the methods used for measuring helium isotope concentrations to date.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104113"},"PeriodicalIF":1.8,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermomechanics of a Kevlar cord suspension for cryogenic spacecraft instruments 低温航天器仪器用凯夫拉绳悬吊的热力学
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-13 DOI: 10.1016/j.cryogenics.2025.104112
René Wanders , Henk van Weers , Johannes Dercksen , Peter Paul Kooijman , Sander Kwast , Arno Gotink
{"title":"Thermomechanics of a Kevlar cord suspension for cryogenic spacecraft instruments","authors":"René Wanders ,&nbsp;Henk van Weers ,&nbsp;Johannes Dercksen ,&nbsp;Peter Paul Kooijman ,&nbsp;Sander Kwast ,&nbsp;Arno Gotink","doi":"10.1016/j.cryogenics.2025.104112","DOIUrl":"10.1016/j.cryogenics.2025.104112","url":null,"abstract":"<div><div>Kevlar cord suspensions in cryogenic instruments are used to suspend cold temperature stages to warmer temperature stages. The heating of Kevlar in these suspensions and the effect on its mechanical properties like stiffness and failure load are scarcely described in the literature. For instruments such as the X-IFU instrument of the Athena mission it is necessary to characterize the mechanical and thermal properties of these suspensions when subjected to sinusoidal and random vibrations transmitted to the instrument by the launch vehicle.</div><div>A compact isostatic Kevlar cord suspension was designed, built and tested on an electrodynamic shaker. Significant heating, presumably caused by friction, was demonstrated with an infrared camera. A dynamic model of the suspension was validated for small loads. At large loads the stiffness of the cords decreased with temperature. A thermal model was experimentally validated, thermal properties of the system were determined. Failure occurred at the highest load levels, when the maximum recommended temperature for Kevlar in air was reached.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104112"},"PeriodicalIF":1.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experiment performance study of a single-stage coaxial pulse tube cryocooler pre-cooled by liquid nitrogen operating at 56 Hz: Achieving 0.5 [email protected] K cooling capacity 56 Hz液氮预冷单级同轴脉冲管制冷机的实验性能研究:达到0.5 K制冷量
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-11 DOI: 10.1016/j.cryogenics.2025.104111
Chenglong Liu , Enchun Xing , Bo Tian , Bin Yang , Yuefeng Niu , Tianshi Feng , Qingjun Tang , Yuexue Ma , Nailiang Wang , Jinghui Cai
{"title":"Experiment performance study of a single-stage coaxial pulse tube cryocooler pre-cooled by liquid nitrogen operating at 56 Hz: Achieving 0.5 [email protected] K cooling capacity","authors":"Chenglong Liu ,&nbsp;Enchun Xing ,&nbsp;Bo Tian ,&nbsp;Bin Yang ,&nbsp;Yuefeng Niu ,&nbsp;Tianshi Feng ,&nbsp;Qingjun Tang ,&nbsp;Yuexue Ma ,&nbsp;Nailiang Wang ,&nbsp;Jinghui Cai","doi":"10.1016/j.cryogenics.2025.104111","DOIUrl":"10.1016/j.cryogenics.2025.104111","url":null,"abstract":"<div><div>The increasing demand for lightweight, high efficiency cooling systems in space cryogenic detection necessitates advancements in pulse tube cryocooler (PTC) design. Traditional two-stage PTCs precool the second-stage hot end to 80 K using the first stage, but the second-stage compressor operates at ambient temperature, inducing significant thermal losses in the transition regenerator due to temperature gradients. This inefficiency, coupled with low operating frequencies and high mass/volume limitations, impedes performance. This study proposes a new single-stage high frequency PTC system to replace traditional second-stage units, addressing compactness and efficiency challenges. The system employs liquid nitrogen precooling (total mass: 2.6 kg) and integrates an inertance tube-gas reservoir phase shifter with a stainless steel screen regenerator. A multi-physics coupling model optimizes phase modulation, enabling direct cooling in the 80 K range. At 1 MPa and 56 Hz with 10 W input power, the system achieves a no-load temperature of 15.8 K after precooling. Operational testing demonstrates 0.5 W effective cooling capacity at 25.5 K and a specific mass cooling power of 192 mW/kg. Frequency optimization reveals enhanced performance near 60 Hz, achieving a record low no-load temperature of 13.5 K at 62 Hz and effective cooling within the 20 K range. Further integration with a micro compressor (300 g, 30 W) is proposed, leveraging first-stage PTC precooling to minimize system volume and mass. This design advances high frequency PTC technology for space applications, offering superior cooling density and operational flexibility compared to traditional architectures.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"149 ","pages":"Article 104111"},"PeriodicalIF":1.8,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analytical and experimental study on the phase-shifting characteristics of inertance tube of pulse tube cryocoolers working at super high frequencies 超高频脉冲管制冷机中惯性管相移特性的分析与实验研究
IF 1.8 3区 工程技术
Cryogenics Pub Date : 2025-05-10 DOI: 10.1016/j.cryogenics.2025.104110
Tianshi Feng , Geyang Li , Menglin Liang , Min Gao , Qingjun Tang , Jia Quan , Houlei Chen , Jingtao Liang
{"title":"Analytical and experimental study on the phase-shifting characteristics of inertance tube of pulse tube cryocoolers working at super high frequencies","authors":"Tianshi Feng ,&nbsp;Geyang Li ,&nbsp;Menglin Liang ,&nbsp;Min Gao ,&nbsp;Qingjun Tang ,&nbsp;Jia Quan ,&nbsp;Houlei Chen ,&nbsp;Jingtao Liang","doi":"10.1016/j.cryogenics.2025.104110","DOIUrl":"10.1016/j.cryogenics.2025.104110","url":null,"abstract":"<div><div>Increasing the operating frequency and enhancing the energy density per unit volume constitute a pivotal development direction for pulse tube cryocoolers. The phase angle between the pressure wave and mass flow rate is a crucial parameter for maintaining a high efficiency in pulse tube cryocoolers, and is typically adjusted using a combination of an inertance tube and a reservoir. This paper analyzes the working mechanism of the phase shift in the inertance tube, and explains the effects of parameter changes on the phase shifting through simulations and experiments, focusing on the frequency range of 150 Hz to 250 Hz. This analysis verifies the feasibility of utilizing the combination of inertance tube and reservoir in pulse tube cryocoolers operating at super high frequencies.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"150 ","pages":"Article 104110"},"PeriodicalIF":1.8,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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