A numerical study on heat transfer enhancement and design of a heat exchanger with porous media in continuous hydrothermal flow synthesis system

作     者：Pedram Karimi Pour-Fard Ebrahim Afshari Masoud Ziaei-Rad Shahed Taghian-Dehaghani 

作者机构：Department of Mechanical Engineering Faculty of Engneering University of Isfahan Hezar Jerib Ave. Isfahan 81746-73441 Iran 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2017年第25卷第10期

页      码：1352-1359页

摘      要：The aim of this study is to use a new configuration of porous media in a heat exchanger in continuous hydrothermal flow synthesis(CHFS)system to enhance the heat transfer and minimize the required length of the heat *** this purpose,numerous numerical simulations are performed to investigate performance of the system with porous ***,the numerical simulation for the heat exchanger in CHFS system is validated by experimental ***,porous media is added to the system and six different thicknesses for the porous media are examined to obtain the optimum thickness,based on the minimum required length of the heat ***,by changing the flow rate and inlet temperature of the product as well as the cooling water flow rate,the minimum required length of the heat exchanger with porous media for various inlet conditions is *** investigations indicate that using porous media with the proper thickness in the heat exchanger increases the cooling rate of the product by almost 40% and reduces the required length of the heat exchanger by approximately 35%.The results also illustrate that the most proper thickness of the porous media is approximately equal to 90% of the product tube s *** of this study lead to design a porous heat exchanger in CHFS system for various inlet conditions.

主 题 词：Continuous hydrothermal flow synthesis Heat exchanger Heat transfer enhancement Porous media Numerical simulation 

学科分类：0710[理学-生物科学类] 080706[080706] 0830[工学-生物工程类] 0817[工学-轻工类] 08[工学] 0807[工学-电子信息类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/j.cjche.2017.01.015

馆 藏 号：203277566...