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微通道折叠扁管承压能力仿真分析及优化设计 被引量:1
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作者 叶振鸿 俞登佳 +2 位作者 张萍 施骏业 陈江平 《制冷学报》 CAS CSCD 北大核心 2019年第4期89-94,共6页
折叠管作为平行流冷凝器的重要组成部分,具有良好的极限承压能力使其逐步替代传统挤压管。本文对折叠管承压能力展开机理研究、仿真及实验分析。通过实验数据拟合得到折叠管材料应力应变数值曲线,将材料参数导入ANSYS建立折叠管爆破仿... 折叠管作为平行流冷凝器的重要组成部分,具有良好的极限承压能力使其逐步替代传统挤压管。本文对折叠管承压能力展开机理研究、仿真及实验分析。通过实验数据拟合得到折叠管材料应力应变数值曲线,将材料参数导入ANSYS建立折叠管爆破仿真模型,此模型仿真爆破值与实验爆破值21.9 MPa相符,通过实验对比验证了模型结果可靠性。基于对折叠管的理论分析,设计一种内插翅片双片式的新型微通道折叠管,通过仿真模型分析其内外壁厚等参数对极限承压能力的影响,得出在内片壁厚0.08 mm、外片壁厚0.2 mm、19孔时综合性能最优,相比于普通微通道管,新型折叠管体积减少了35%,极限承压值增加30%。新型折叠管不仅节约材料成本,使扁管结构更加紧凑,还具有优异的极限承压性能。 展开更多
关键词 平行流多孔铝管 数值模拟 折叠管 有限元分析 平行流冷凝器
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牛蒡的临床应用 被引量:12
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作者 叶振鸿 《宜春医专学报》 2001年第2期197-197,共1页
关键词 牛蒡 清热 解毒 临床应用 风热感冒 急性咽喉肿瘤 急性乳腺炎
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马钱子临床运用一得
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作者 叶振鸿 《宜春医专学报》 2001年第2期194-194,共1页
关键词 马钱子 治疗 临床应用 疼痛 肩周炎 坐骨神经痛 骨质增生症
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Working Fluid Distribution and Charge Regulation Control in Organic Rankine Cycle
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作者 叶振鸿 李新华 +1 位作者 王炜 陈江平 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第2期188-201,共14页
Charge-based studies,in particular investigations of mass distribution,are still almost absent,although the efficiency of the organic Rankine cycle(ORC)has attracted a great deal of scholarly attention.This paper aims... Charge-based studies,in particular investigations of mass distribution,are still almost absent,although the efficiency of the organic Rankine cycle(ORC)has attracted a great deal of scholarly attention.This paper aims to provide a new perspective on the intrinsic relationship among the mass distribution,phase-zone distribution in the heat exchanger(HEX),charge of working fuid(WF),rotation speed of the pump(RSP),and system performance.A comprehensive ORC simulation model is presented by linking each component's sub-models,including the independent models for HEX,pump,and expander in an object-oriented fashion.The visualization study of mass distribution of the WF in the system is investigated under different working conditions.Furthermore,the volume and mass of the gas phase,two-phase and liquid phase of WF in the HEX and their variation rules are analyzed in-depth.Finally,the strategies of charge reduction considering HEX areas and pipe sizes are investigated.The results show that the model based on the interior-point method provides high levels of accuracy and robustness.The mass ratio of the WF is concentrated in the liquid receiver,especially in the regenerator,which is 32.9%and 21.9%of the total mass,respectively.Furthermore,2.4 kg(6.9%)WF in the system gradually migrates to the high-temperature side as the RSP increases while 6.1 kg(17.4%)WF migrates to the low-temperature side,especially to the condenser,as the charge in the system increases.Output power and efficiency both decrease gradually after the peak due to changes in RSP and charge.Last,reducing heat transfer areas of the condenser and regenerator is the most effective way to reduce WF charge. 展开更多
关键词 SIMULATION organic Rankine cycle(ORC) working fuid charge mass distribution
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Review on Anti-Frost Technology Based on Microchannel Heat Exchanger
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作者 叶振鸿 王炜 +1 位作者 李新华 陈江平 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第2期161-178,共18页
Frosting is an inevitable adverse phenomenon in many fields such as industrial refrigeration,cryo-genics,and heat pump air conditioning,which may influence the efficiency of the equipment and increase the energy consu... Frosting is an inevitable adverse phenomenon in many fields such as industrial refrigeration,cryo-genics,and heat pump air conditioning,which may influence the efficiency of the equipment and increase the energy consumption of the system.The complicated louvered-fin structure and fuid-channels arrangements of the microchannel heat exchanger(HEX)will affect the heat transfer performance and frosting characteristics.First,this article analyzes different factors such as refrigerant distribution,refrigerant fow pattern,and HEX surface temperature distribution.Further,combined with the features of the microchannel HEX,the existing anti-frosting technologies and various methods of surface treatment for anti-frosting are summarized.The review focuses on the preparation of superhydrophobic surfaces and their superior properties.Furthermore,the internal mechanism is analyzed in conjunction with the relevant research of our group.Superhydrophobic character has excellent anti-frosting performance and heat transfer performance,which is of great significance for improving energy-saving and system performance.Finally,the future development of superhydrophobic surface technology is analyzed and prospected. 展开更多
关键词 anti-frost technology microchannel heat exchanger(HEX) superhydrophobic surface
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