首页 > 最新文献

Cryogenics最新文献

英文 中文
Numerical evaluation of mechanical response in Bi-2223 coil under complicated loadings
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-15 DOI: 10.1016/j.cryogenics.2024.104001
Dong Wei, Donghui Liu, Huadong Yong
A high-strength Bi-2223 Type HT-NX (reinforced with Ni-alloy) wire has been developed and commercialized. This tape is of significant utility in nuclear magnetic resonance (NMR) and other high magnetic field applications, as it is able to provide a stable magnetic field due to its multi-filamentary properties, which serves to reduce the screening effect. In this study, the external reinforcement of the Bi-2223 tape can extend the critical strain of the internal filaments, which is derived from residual strain caused by the difference of various thermal expansion coefficients during the preparation and cooling processes. To obtain electromagnetic and mechanical behaviors of the Bi-2223 coil in high field, a finite element numerical simulation based on the H-formulation is proposed. There are two modeling geometries adopted for the simulation, one is the mono-filamentary geometry in the homogenization model, and the other is the multi-filamentary geometry. The mechanical behavior of the two models differs significantly with regard to the magnetization. For the charging process, the difference will decrease with the increase of the charging current. Moreover, the cumulative strain of the coil under the combined action of winding, cooling and electromagnetic force is analyzed comprehensively. Finally, the numerical results of coil in varying positions for the two models will also be influenced by alterations in the parallel and vertical fields.
{"title":"Numerical evaluation of mechanical response in Bi-2223 coil under complicated loadings","authors":"Dong Wei,&nbsp;Donghui Liu,&nbsp;Huadong Yong","doi":"10.1016/j.cryogenics.2024.104001","DOIUrl":"10.1016/j.cryogenics.2024.104001","url":null,"abstract":"<div><div>A high-strength Bi-2223 Type HT-NX (reinforced with Ni-alloy) wire has been developed and commercialized. This tape is of significant utility in nuclear magnetic resonance (NMR) and other high magnetic field applications, as it is able to provide a stable magnetic field due to its multi-filamentary properties, which serves to reduce the screening effect. In this study, the external reinforcement of the Bi-2223 tape can extend the critical strain of the internal filaments, which is derived from residual strain caused by the difference of various thermal expansion coefficients during the preparation and cooling processes. To obtain electromagnetic and mechanical behaviors of the Bi-2223 coil in high field, a finite element numerical simulation based on the H-formulation is proposed. There are two modeling geometries adopted for the simulation, one is the mono-filamentary geometry in the homogenization model, and the other is the multi-filamentary geometry. The mechanical behavior of the two models differs significantly with regard to the magnetization. For the charging process, the difference will decrease with the increase of the charging current. Moreover, the cumulative strain of the coil under the combined action of winding, cooling and electromagnetic force is analyzed comprehensively. Finally, the numerical results of coil in varying positions for the two models will also be influenced by alterations in the parallel and vertical fields.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"145 ","pages":"Article 104001"},"PeriodicalIF":1.8,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145089","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
Corrigendum to “Numerical and experimental investigation of 12 W/60 K high-efficiency coaxial pulse tube cryocooler” [Cryogenics 143 (2024) 10394]
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-07 DOI: 10.1016/j.cryogenics.2024.104022
Yanen Li , Nailiang Wang , Miguang Zhao , Qingjun Tang , Yuqiang Xun
{"title":"Corrigendum to “Numerical and experimental investigation of 12 W/60 K high-efficiency coaxial pulse tube cryocooler” [Cryogenics 143 (2024) 10394]","authors":"Yanen Li ,&nbsp;Nailiang Wang ,&nbsp;Miguang Zhao ,&nbsp;Qingjun Tang ,&nbsp;Yuqiang Xun","doi":"10.1016/j.cryogenics.2024.104022","DOIUrl":"10.1016/j.cryogenics.2024.104022","url":null,"abstract":"","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104022"},"PeriodicalIF":1.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349033","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
Heat load efficiency in multi-temperature cryogenic computing systems
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-06 DOI: 10.1016/j.cryogenics.2024.104013
Nurzhan Zhuldassov, Rassul Bairamkulov, Eby G. Friedman
Heterogeneous cryogenic computing systems often incorporate a variety of technologies, each functioning at different temperatures. The chosen operating temperature of these components significantly influences the overall power dissipation, heat load, and system performance. Existing design methodologies for managing cryogenic systems with multiple temperature zones often overlook thermal variations within these zones, the interconnect between different zones, and are restricted to the temperature within a single zone. A comprehensive framework designed to enhance the efficiency of heterogeneous computing systems operating under cryogenic conditions is presented in this paper. Utilizing a graph theoretic approach, the framework is used to evaluate the influence of operating temperatures on both delay and power consumption. Thermal interactions among different system components are also considered, enabling a more precise estimate of the power requirements and local thermal load. The methodology is applied to two case studies related to cryogenic cloud computing systems. The objective is to minimize overall system-wide power consumption while satisfying specific performance criteria and considering the impact of heat load on the cooling infrastructure.
{"title":"Heat load efficiency in multi-temperature cryogenic computing systems","authors":"Nurzhan Zhuldassov,&nbsp;Rassul Bairamkulov,&nbsp;Eby G. Friedman","doi":"10.1016/j.cryogenics.2024.104013","DOIUrl":"10.1016/j.cryogenics.2024.104013","url":null,"abstract":"<div><div>Heterogeneous cryogenic computing systems often incorporate a variety of technologies, each functioning at different temperatures. The chosen operating temperature of these components significantly influences the overall power dissipation, heat load, and system performance. Existing design methodologies for managing cryogenic systems with multiple temperature zones often overlook thermal variations within these zones, the interconnect between different zones, and are restricted to the temperature within a single zone. A comprehensive framework designed to enhance the efficiency of heterogeneous computing systems operating under cryogenic conditions is presented in this paper. Utilizing a graph theoretic approach, the framework is used to evaluate the influence of operating temperatures on both delay and power consumption. Thermal interactions among different system components are also considered, enabling a more precise estimate of the power requirements and local thermal load. The methodology is applied to two case studies related to cryogenic cloud computing systems. The objective is to minimize overall system-wide power consumption while satisfying specific performance criteria and considering the impact of heat load on the cooling infrastructure.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104013"},"PeriodicalIF":1.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159310","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
Modeling of solid-air dendrite growth solidification in liquid hydrogen by using isotropic quantitative phase field method
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-05 DOI: 10.1016/j.cryogenics.2025.104024
Chaolong Li, Ke Li, Jian Wen, Lei Wang, Yanzhong Li
The safety hazards caused by solid-air accumulation in liquid hydrogen need attention. This paper is dedicated to the numerical reproduction of the microstructural evolution of solid-air dendrites in liquid hydrogen and the investigation of the oxygen solute distribution pattern. A quantitative phase field model for the growth of six-fold symmetric solid-air dendrites is developed to investigate the growth behavior of solid-air single and multiple dendrites under different subcooling and continuous cooling conditions to address the quantitative deficiencies of previous studies. The results show that the current model can maintain the rotational invariance of solid-air dendrites. With the escalation of subcooling, the dendritic morphology undergoes heightened complexity, and the development of secondary dendrite arms becomes more pronounced. Three characteristic position curves were chosen to quantify the oxygen solute distribution within the solid-air dendrites and in the liquid phase, with the highest oxygen solute concentration near the solid–liquid interface and increasing with subcooling. The distribution of oxygen solute concentration shows the same qualitative characteristics under constant subcooling and continuous cooling conditions, but the oxygen concentration at the solid–liquid interface is higher under continuous cooling compared to constant subcooling. The interaction of multiple dendrites changes the dendrite growth pattern. At constant subcooling, solid-air dendrite growth gradually tends to stagnate, whereas under continuous cooling conditions, solid-air dendrites can achieve greater solid phase fraction. The gaps formed between the dendrites impede the diffusion of oxygen solutes, and the concentration of oxygen solutes is higher at the grain boundaries of the dendrites compared to single dendrite.
{"title":"Modeling of solid-air dendrite growth solidification in liquid hydrogen by using isotropic quantitative phase field method","authors":"Chaolong Li,&nbsp;Ke Li,&nbsp;Jian Wen,&nbsp;Lei Wang,&nbsp;Yanzhong Li","doi":"10.1016/j.cryogenics.2025.104024","DOIUrl":"10.1016/j.cryogenics.2025.104024","url":null,"abstract":"<div><div>The safety hazards caused by solid-air accumulation in liquid hydrogen need attention. This paper is dedicated to the numerical reproduction of the microstructural evolution of solid-air dendrites in liquid hydrogen and the investigation of the oxygen solute distribution pattern. A quantitative phase field model for the growth of six-fold symmetric solid-air dendrites is developed to investigate the growth behavior of solid-air single and multiple dendrites under different subcooling and continuous cooling conditions to address the quantitative deficiencies of previous studies. The results show that the current model can maintain the rotational invariance of solid-air dendrites. With the escalation of subcooling, the dendritic morphology undergoes heightened complexity, and the development of secondary dendrite arms becomes more pronounced. Three characteristic position curves were chosen to quantify the oxygen solute distribution within the solid-air dendrites and in the liquid phase, with the highest oxygen solute concentration near the solid–liquid interface and increasing with subcooling. The distribution of oxygen solute concentration shows the same qualitative characteristics under constant subcooling and continuous cooling conditions, but the oxygen concentration at the solid–liquid interface is higher under continuous cooling compared to constant subcooling. The interaction of multiple dendrites changes the dendrite growth pattern. At constant subcooling, solid-air dendrite growth gradually tends to stagnate, whereas under continuous cooling conditions, solid-air dendrites can achieve greater solid phase fraction. The gaps formed between the dendrites impede the diffusion of oxygen solutes, and the concentration of oxygen solutes is higher at the grain boundaries of the dendrites compared to single dendrite.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104024"},"PeriodicalIF":1.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159304","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
Optimised fuzzy-tuned PID control for piston offset in linear compressors for Joule-Thomson cryocoolers
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-05 DOI: 10.1016/j.cryogenics.2024.104014
Nibin Qian , Xinwen Chen , Zhaohua Li , Kun Liang
Linear compressor is known for no crank mechanism, oil-free, variable stroke and high efficiency, making it attractive for Joule-Thomson cryocooler applications. However, piston offset in linear compressor can cause collision between piston and cylinder head, limiting achievable high stroke. In this work, a model based fuzzy-tuned PID controller optimised by hill climbing algorithm (HCA) is developed to eliminate the piston offset by adjusting a DC voltage added to the drive voltage waveform. Its ability to dynamically adjust PID gains minimises offset overshoot that can damage the compressor. Optimising with HCA reduces response time by 57.6% and overshoot by 87.5%. The DC voltage increases with pressure ratios because the piston offset rises accordingly. The achievable maximum specific mass flow rate increases by 13.2% compared to when there is no piston offset control. The controller demonstrates significant advantages in terms of speed and overshoot in eliminating piston offset.
{"title":"Optimised fuzzy-tuned PID control for piston offset in linear compressors for Joule-Thomson cryocoolers","authors":"Nibin Qian ,&nbsp;Xinwen Chen ,&nbsp;Zhaohua Li ,&nbsp;Kun Liang","doi":"10.1016/j.cryogenics.2024.104014","DOIUrl":"10.1016/j.cryogenics.2024.104014","url":null,"abstract":"<div><div>Linear compressor is known for no crank mechanism, oil-free, variable stroke and high efficiency, making it attractive for Joule-Thomson cryocooler applications. However, piston offset in linear compressor can cause collision between piston and cylinder head, limiting achievable high stroke. In this work, a model based fuzzy-tuned PID controller optimised by hill climbing algorithm (HCA) is developed to eliminate the piston offset by adjusting a DC voltage added to the drive voltage waveform. Its ability to dynamically adjust PID gains minimises offset overshoot that can damage the compressor. Optimising with HCA reduces response time by 57.6% and overshoot by 87.5%. The DC voltage increases with pressure ratios because the piston offset rises accordingly. The achievable maximum specific mass flow rate increases by 13.2% compared to when there is no piston offset control. The controller demonstrates significant advantages in terms of speed and overshoot in eliminating piston offset.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104014"},"PeriodicalIF":1.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159308","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
Improved superconducting properties of ex situ processed MgB2 tapes sintered at low temperatures under hydrogen atmosphere
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-05 DOI: 10.1016/j.cryogenics.2025.104023
Hiroki Fujii
Ex situ processed Fe-sheathed MgB2 tapes using milled powders with Te addition were sintered under Ar or H2 atmosphere. In comparison with Ar atmosphere, sintering under H2 improves grain connectivity in microstructure at a lower temperature. Concerning the superconducting properties, the sintering under H2 increases the critical temperature (Tc) of the tapes by up to 2 K, as observed for in situ processed conductors heat-treated under H2. However, the transport critical density (Jc) property shows different behavior. Whereas heat treatment under H2 just degrades the Jc for the in situ process, sintering under H2 improves the Jc at a lower temperature for the ex situ process. The optimal sintering temperature (Tsin) at which Jc at 4.2 K and 10 T shows best performance is lower for the sintering under H2 than that for Ar by more than 100 °C without Jc deterioration. This Jc enhancement at low Tsins is attributed to the improved grain connectivity and the increase in the Tc, upper critical, and irreversibility fields (Hc2 and Hirr).
{"title":"Improved superconducting properties of ex situ processed MgB2 tapes sintered at low temperatures under hydrogen atmosphere","authors":"Hiroki Fujii","doi":"10.1016/j.cryogenics.2025.104023","DOIUrl":"10.1016/j.cryogenics.2025.104023","url":null,"abstract":"<div><div><em>Ex situ</em> processed Fe-sheathed MgB<sub>2</sub> tapes using milled powders with Te addition were sintered under Ar or H<sub>2</sub> atmosphere. In comparison with Ar atmosphere, sintering under H<sub>2</sub> improves grain connectivity in microstructure at a lower temperature. Concerning the superconducting properties, the sintering under H<sub>2</sub> increases the critical temperature (<em>T</em><sub>c</sub>) of the tapes by up to 2 K, as observed for <em>in situ</em> processed conductors heat-treated under H<sub>2</sub>. However, the transport critical density (<em>J</em><sub>c</sub>) property shows different behavior. Whereas heat treatment under H<sub>2</sub> just degrades the <em>J</em><sub>c</sub> for the <em>in situ</em> process, sintering under H<sub>2</sub> improves the <em>J</em><sub>c</sub> at a lower temperature for the <em>ex situ</em> process. The optimal sintering temperature (<em>T</em><sub>sin</sub>) at which <em>J</em><sub>c</sub> at 4.2 K and 10 T shows best performance is lower for the sintering under H<sub>2</sub> than that for Ar by more than 100 °C without <em>J</em><sub>c</sub> deterioration. This <em>J</em><sub>c</sub> enhancement at low <em>T</em><sub>sin</sub>s is attributed to the improved grain connectivity and the increase in the <em>T</em><sub>c</sub>, upper critical, and irreversibility fields (<em>H</em><sub>c2</sub> and <em>H</em><sub>irr</sub>).</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104023"},"PeriodicalIF":1.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159191","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
Critical current and AC-loss for intentionally cracked REBCO split wires
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2025-01-03 DOI: 10.1016/j.cryogenics.2024.104011
Ryohei Nishiyama, Shintetsu Kanazawa
Tape shape of REBCO-coated conductor with a single-core structure is commercially available. However, the single core leads to a large AC-loss due to magnetization hysteresis. A multi-core structure can be used to reduce this loss. However, it is difficult to fabricate a long multi-core wire made of a REBCO-coated conductor because defects generated during the fabrication process lead to local decreases in the critical current. To obtain a large critical current throughout the wire, the critical current in each core should be maintained. However, local defects in most cores in a long wire reduce the critical current. This study proposes an intentionally cracked REBCO split wire that has a multi-core structure but without complete separation of the cores.
{"title":"Critical current and AC-loss for intentionally cracked REBCO split wires","authors":"Ryohei Nishiyama,&nbsp;Shintetsu Kanazawa","doi":"10.1016/j.cryogenics.2024.104011","DOIUrl":"10.1016/j.cryogenics.2024.104011","url":null,"abstract":"<div><div>Tape shape of REBCO-coated conductor with a single-core structure is commercially available. However, the single core leads to a large AC-loss due to magnetization hysteresis. A multi-core structure can be used to reduce this loss. However, it is difficult to fabricate a long multi-core wire made of a REBCO-coated conductor because defects generated during the fabrication process lead to local decreases in the critical current. To obtain a large critical current throughout the wire, the critical current in each core should be maintained. However, local defects in most cores in a long wire reduce the critical current. This study proposes an intentionally cracked REBCO split wire that has a multi-core structure but without complete separation of the cores.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104011"},"PeriodicalIF":1.8,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design, Fabrication, Assembling and Testing of QWR/HWR Cavity Cryomodules for HIAF Project
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2024-12-31 DOI: 10.1016/j.cryogenics.2024.104019
Feng Bai , Peng Zhang , Xianjin Wang , Yugang Zhao , Xiaofei Niu , Zhiming You , Luozhu Nian , Yonghui Yang , Yongping Hu , Jun Wen , Dajun Fan , Junhui Zhang , Juli Hu , Maolei Lu , Pei Wang
The QWR/HWR cavity cryomodules have been designed for High Intensity heavy-ion Accelerator Facility (HIAF) at the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). There are 17 cryomodules operating at 2 K&3130 Pa of HIAF linac, which consist of 6 QWR007 cryomodules and 11 HWR015 cryomodules, respectively. These cryomodules are being processed in the vendor currently. And the first cryomodule has completed horizontal testing in July 2024. This paper will report the design, fabrication, assembling and testing of the cryomodule for HIAF project.
{"title":"Design, Fabrication, Assembling and Testing of QWR/HWR Cavity Cryomodules for HIAF Project","authors":"Feng Bai ,&nbsp;Peng Zhang ,&nbsp;Xianjin Wang ,&nbsp;Yugang Zhao ,&nbsp;Xiaofei Niu ,&nbsp;Zhiming You ,&nbsp;Luozhu Nian ,&nbsp;Yonghui Yang ,&nbsp;Yongping Hu ,&nbsp;Jun Wen ,&nbsp;Dajun Fan ,&nbsp;Junhui Zhang ,&nbsp;Juli Hu ,&nbsp;Maolei Lu ,&nbsp;Pei Wang","doi":"10.1016/j.cryogenics.2024.104019","DOIUrl":"10.1016/j.cryogenics.2024.104019","url":null,"abstract":"<div><div>The QWR/HWR cavity cryomodules have been designed for High Intensity heavy-ion Accelerator Facility (HIAF) at the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). There are 17 cryomodules operating at 2 K&amp;3130 Pa of HIAF linac, which consist of 6 QWR007 cryomodules and 11 HWR015 cryomodules, respectively. These cryomodules are being processed in the vendor currently. And the first cryomodule has completed horizontal testing in July 2024. This paper will report the design, fabrication, assembling and testing of the cryomodule for HIAF project.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104019"},"PeriodicalIF":1.8,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159303","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
Growth behavior of bubbles containing non-condensable gas in superheated cryogenic liquids
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2024-12-30 DOI: 10.1016/j.cryogenics.2024.104016
Yonghua Huang, Xujin Qin
Bubble growth is one of the most critical concerns in flashing or cavitation in metastable superheated liquids. The bubble growth rate and heat and mass transfer rates across the boundary are essential for quantifying the flashing evaporation behavior. Prior simulations treated the bubble as a pure vapor, which dropped an important influencing factor driving bubble growth. A mathematical model is proposed for characterizing bubble growth in superheated cryogenic liquids, namely, liquid oxygen, hydrogen, and nitrogen. The model considers a non-condensable gas component in the bubble, which plays a significant role in the early stages of bubble growth. It not only influences the critical radius of the bubble but also affects the delay time of the growth. The behavior of bubbles in these cryogenic fluids was compared to that in water in terms of radius growth. The effect of the liquid state on the bubble radius was investigated. As expected, the bubble grew faster in the liquid at lower pressures and greater degrees of superheat. Bubbles with smaller critical radii require higher degrees of superheat or thermal disturbances to grow.
{"title":"Growth behavior of bubbles containing non-condensable gas in superheated cryogenic liquids","authors":"Yonghua Huang,&nbsp;Xujin Qin","doi":"10.1016/j.cryogenics.2024.104016","DOIUrl":"10.1016/j.cryogenics.2024.104016","url":null,"abstract":"<div><div>Bubble growth is one of the most critical concerns in flashing or cavitation in metastable superheated liquids. The bubble growth rate and heat and mass transfer rates across the boundary are essential for quantifying the flashing evaporation behavior. Prior simulations treated the bubble as a pure vapor, which dropped an important influencing factor driving bubble growth. A mathematical model is proposed for characterizing bubble growth in superheated cryogenic liquids, namely, liquid oxygen, hydrogen, and nitrogen. The model considers a non-condensable gas component in the bubble, which plays a significant role in the early stages of bubble growth. It not only influences the critical radius of the bubble but also affects the delay time of the growth. The behavior of bubbles in these cryogenic fluids was compared to that in water in terms of radius growth. The effect of the liquid state on the bubble radius was investigated. As expected, the bubble grew faster in the liquid at lower pressures and greater degrees of superheat. Bubbles with smaller critical radii require higher degrees of superheat or thermal disturbances to grow.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104016"},"PeriodicalIF":1.8,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159309","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
Design and operation of direct heat exchange type thermal energy storage unit in an actual-size liquid air energy storage system
IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED Pub Date : 2024-12-30 DOI: 10.1016/j.cryogenics.2024.104015
Kyoung Joong Kim , Cheonkyu Lee , Junhyuk Bae , Sangkwon Jeong
This study examines the design specifications and operational parameters crucial for integrating thermal energy storage unit (TESU) within a demonstration-scale liquid air energy storage (LAES) system. The LAES system’s storage capacity of 6 MWh and power generation of 2 MW serve as performance benchmarks. To satisfy these criteria, a TESU with a mass flow rate of 26 kg/s and a duration of 2 hr to 4 h is deemed essential. Ensuring an effectiveness exceeding 0.9 necessitates adherence to specific design principles. Firstly, optimal spatial configuration of heat exchange parts, approximately double the thermal penetration depth, is essential to maintain high performance. Deviations from this guideline can lead to decreased heat exchange efficiency and thermal interference. Moreover, as TESU duration increases, the relative heat capacity of the shuttle mass rises, diminishing overall effectiveness. Adequate heat capacity within the TESU is thus crucial to sustaining desired performance levels throughout the duration. Additionally, optimizing the aspect ratio of the TESU improves effectiveness by mitigating axial heat conduction losses, facilitating efficient energy storage and retrieval. By incorporating these design considerations, the performance and effectiveness of the TESU within LAES systems can be optimized, enabling seamless energy management.
{"title":"Design and operation of direct heat exchange type thermal energy storage unit in an actual-size liquid air energy storage system","authors":"Kyoung Joong Kim ,&nbsp;Cheonkyu Lee ,&nbsp;Junhyuk Bae ,&nbsp;Sangkwon Jeong","doi":"10.1016/j.cryogenics.2024.104015","DOIUrl":"10.1016/j.cryogenics.2024.104015","url":null,"abstract":"<div><div>This study examines the design specifications and operational parameters crucial for integrating thermal energy storage unit (TESU) within a demonstration-scale liquid air energy storage (LAES) system. The LAES system’s storage capacity of 6 MWh and power generation of 2 MW serve as performance benchmarks. To satisfy these criteria, a TESU with a mass flow rate of 26 kg/s and a duration of 2 hr to 4 h is deemed essential. Ensuring an effectiveness exceeding 0.9 necessitates adherence to specific design principles. Firstly, optimal spatial configuration of heat exchange parts, approximately double the thermal penetration depth, is essential to maintain high performance. Deviations from this guideline can lead to decreased heat exchange efficiency and thermal interference. Moreover, as TESU duration increases, the relative heat capacity of the shuttle mass rises, diminishing overall effectiveness. Adequate heat capacity within the TESU is thus crucial to sustaining desired performance levels throughout the duration. Additionally, optimizing the aspect ratio of the TESU improves effectiveness by mitigating axial heat conduction losses, facilitating efficient energy storage and retrieval. By incorporating these design considerations, the performance and effectiveness of the TESU within LAES systems can be optimized, enabling seamless energy management.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"146 ","pages":"Article 104015"},"PeriodicalIF":1.8,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159311","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
期刊
Cryogenics
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1