|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Phase change driving mechanism and modeling for heat pipe with porous wick显示文摘According to heat pipe theory, capillary force is the only driving force for the circle of working fluid in heat pipe with porous wick. By developing a simulating circuit of liquid and vapor flow in heat pipe with porous wick, this paper presents a new driving mechanism which is from phase change of fluid. Furthermore, by analyzing transport process of working fluid between evaporation and condensation interfaces, a mathematical model is developed to describe this driving mechanism. Besides, calculating examples are given for heat pipe with water as working fluid to predict its driving force and flow resistance. By applying the model presented in the paper, thermal design and calculation for heat pipe with porous wick, especially for miniature heat pipe, can be made correctly, and phase change driving mechanism of working fluid can be explained, which thereby leads to a better understanding of heat transfer limitation of heat pipe with porous wick. | LIU Wei LIU ZhiChun YANG Kun TU ZhengKai | 2009 | Chinese Science Bulletin2009，54，21： | 4 |
| 2 | Impregnation of amine-tailored titanate nanotubes in polymer electrolyte membranes显示文摘 | Qiong Li Haining Zhang Zhengkai Tu Jun Yu Chuanxi Xiong Mu Pan | 2012 | Journal of Membrane Science2012，，： | 1 |
| 3 | Experimental study of the loop heat pipe with a flat disk-shaped evaporator 显示文摘 | Wang Dongdong Liu Zhichun Shen Jun Jiang Chi Chen Binbin Yang Jinguo Tu Zhengkai Liu Wei | 2014 | Experimental Thermal and Fluid Science2014，57，： | 1 |
| 4 | Application of self-adaptive temperature recognition in cold-start of an air-cooled proton exchange membrane fuel cell stack显示文摘The Self-adaptive control of the temperature can achieve the start of fuel cell at different operating temperatures, which is very important for the successful cold-start of the air-cooled PEMFC. The temperature distribution characteristics during the cold-start process were analyzed based on adaptive temperature recognition control in this paper. Preheating model and cold-start model were established and the optimal balance between the hot air flow rate and the temperature required to promote a uniform temperature distribution in the stack was explored in the preheating stage. Finally, the non-equilibrium mass transfer, as well as the temperature rise in the catalyst layer and gas diffusion layer with different current densities, were analyzed in the start-up stage. The results indicate that the air-cooled PEMFC stack can be successfully started up at -40 ◦C within 10 min by means of external gas heating. The current density and air velocity have significant impacts on the temperature of aircooled PEMFC stack. Dynamic analysis of air-cooled PEMFCs and real-time monitoring are suitable for machine learning and self-adaptive control to set the operation parameters to achieve successful cold start. Optimize the matching of load current and cathode inlet speed to achieve thermal management in low temperature environment. | Xianxian Yu Huawei Chang Junjie Zhao Zhengkai Tu Siew Hwa Chan | 2022 | Energy and AI2022，9，3： | 1 |
| 5 | Interface stability in a capillary loop undergoing phase changes in non-gravitational conditions显示文摘A mathematical model based on the Lucas-Washburn equation has been developed to address the relationships between capillary height,capillary radius and heat flux in a capillary loop.The stability criteria at the interface are studied in detail by introducing a small perturbation to the interfaces of the capillary loop.The formulae deduced as a consequence are used to analyze the influence of height of the capillary wick and the stability in a capillary loop undergoing phase changes. | TU ZhengKai LIU Wei LIU ZhiChun HUANG XiaoMing | 2010 | Chinese Science Bulletin2010，55，35： | 0 |
| 6 | Desiccant Performance Evaluation of Desiccant-Coated Heat Exchanger-Based Heat Pump by Equilibrium Model显示文摘By combining the advantages of desiccant dehumidification and vapor compression refrigeration,the desiccant-coated heat exchanger-based heat pump(DCHE HP)is regarded as a promising alternative to the traditional vapor-compression air conditioning system(VCAC).Selecting proper desiccants from a large number of candidates is of great importance to improve the performance of DCHE HP.However,this task is challenging using current experimental or modelling strategies.In this work,we developed an equilibrium model to evaluate the power consumption of 39 DCHE HPs coated with different desiccants under various operating conditions.Eventually,five desiccants with low power consumption were selected.It was also demonstrated that under given operating conditions,the DCHE HP based on the five selected desiccants can save 21.3%–32.9%power compared with the VCAC.The power consumption of the DCHE HP is largely dependent on the heat of adsorption,the cyclical water uptakes and the remained moisture contents of the coating desiccants.It was further revealed that the moderate heat of adsorption,the larger cyclical water uptake and the lower remained moisture content are preferable for reducing the system energy demand.This work reported a quick evaluation of 39 desiccants for DCHE HP by an equilibrium model,which may also offer insights into the choosing and designing of desiccants for DCHE HP. | LIU Yuexin LIU Zhilu XIA Xiaoxiao LI Wei TU Zhengkai CAI Shanshan LI Song | 2023 | Journal of Thermal Science2023，32，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员