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for the heat transfer rate with the same pressure drop. To balance pressure drop and heat transfer, the entropy generation for each case is calculated in the following: ... J. Cent. South Univ. (2020) 27: 2324-2337 DOI: https://doi.org/10.1007/s11771-020-4452-5 Heat transfer simulation of annular elliptical fin-and-tube heat exchanger by transition SST model H NEMATI1......
Optimising Gas Quenching Technology through Modelling of Heat Transfer Qingfei Zhang1,Aymeric Goldsteinas2,Xavier Doussot2,Florent Chaffotte3,Didier Domergue3,Linda L4 (1.Air Liquide Shanghai Co... quenching process fully depends on the heat transfer between the gas and the quenched parts. The goal of this study is the optimisation of the gas quenching process efficiency through a better understanding......
) Abstract: In order to study the evolution of ice crystal size with stirring action during the process of ice slurry storage, the multiphase flow model and the population balance model (PBM) were... model; population balance model 冰浆是由载流溶液和冰晶组成的固液两相流,具有流动与传热特性良好,蓄能密度大,无污染等优点,现已应用于区域供冷,蓄冷空调系统及工业冷却等领域,且在化工,医药,环保等领域具有广阔的应用前景[1].冰浆在存储过程中,在成核,生长,破碎,团聚等作用下,冰晶粒径及分布会随着时间发生变化.冰晶粒径及分布对冰浆流动与换热特性有重要影响,如冰晶的富集容易导......
烧结环冷机热工测试及余热源参数确定赵斌1,2,张玉柱1,王子兵2,胡长庆2,张志远3,王沧4(1.河北省唐山市河北理工大学河北省现代冶金技术重点实验室2.北京市华北电力大学电站设备状态监测与控制教育部重点实验室3.北京科技大学 机械工程学院,北京 1000834.唐山钢铁股份有限公司 炼铁厂,河北唐山 063016)摘 要:冷却机热废气温度和流量是烧结余热电站设计中两个首要的基础参数.通过对唐钢炼铁厂北区1号,2号两台190 m2环冷机正常生产工况下的热工测试,采用直接测试和热平衡两种方法进行数据计算及对比分析......
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Laser Heat Treatment on Gear Surface and Its Practical Application DAI Zhong-sen1,SU Bao-rong1,MA Chun-yin1 (1.Guangzhou Photone Technology Co. LTD, P. R. China) 摘要:Making gears with hardened tooth flank is one of the important developments in gear manufacturing. However, the conventional heat treating methods have a common shortcoming--producing big deformation. In this work, we demonstrate......
Maximum heat transfer capacity of high temperature heat pipe with triangular grooved wickSHEN Yan(沈妍)1, ZHANG Hong(张红)1, 2, XU Hui(许辉)1, YU Ping(于萍)1, BAI Tong(白穜)1(1. College of Energy Engineering, Nanjing Tech University, Nanjing 211816, China;2. Changzhou Institute of Technology, Changzhou 213002, China)Abstract:A mathematical model was developed to predict the maximum heat transfer capacity......
balance modeling for the process of the dynamic evolution in dispersed systems[M]. Beijing: Science Press, 2008: 13-18. [6] Pronk P. Fluidized bed heat exchangers to prevent fouling in ice slurry systems... to study the principle of the evolution of ice crystal size distribution during the process of ice slurry storage, population balance model was introduced to make a numerical simulation......
on the calculation of the heat of reaction, the heat balance equation of the bio-heap leaching process was established. The effects of the heat produced, the irrigation rate and air flow rate...-heap leaching; heat balance; temperature field 堆浸是实现生物提铜冶金的主要方法,尽管次生硫化铜......
to understand the ice crystals evolution mechanism and distribution characteristics during the process of ice slurry storage, the population balance model (PBM) was introduced to make a numerical simulation on the ice particle size distribution and its evolution. Based on the self-developed Matlab program, discretized population balance method was used to discrete and solve the population balance equation......
