一种熔融铝液辐射余热回收用集热器的性能仿真研究  

Simulation Study on Performance of a Collector for Waste Heat Recovery of Radiant Heat of Molten Aluminum Liquid

作　　者：魏军英[1] 江政 王吉岱[1] 王鹏[1] WEI Jun-ying;JIANG Zheng;WANG Ji-dai;WANG Peng(College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao,266590)

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590

出　　处：《热能动力工程》2020年第5期274-280,共7页Journal of Engineering for Thermal Energy and Power

基　　金：山东省高等学校科技计划项目(J18KA049)。

摘　　要：以回收熔融铝液辐射热量的集热器为研究对象,建立了集热器热力学过程理论模型,并采用Workbench和Fluent软件对集热器辐射传热过程和对流传热过程进行仿真分析。结果表明:当辐射距离为400~900 mm时,壁面平均温度在190~350℃之间;出口压力和壁面温度增加导致对流传热系数减小,而流量增加则使对流传热系数增加;流量和出口压力增加导致出口温度降低;系统流量增加造成压缩空气压降增大,出口压力增大导致压降减小,而壁面温度对压降没有影响。Taking the collector of radiant heat of molten aluminum liquid as the research object,the theoretical model of the thermodynamic process of the collector was established,and the radiation heat transfer process and convection heat transfer process of the collector were simulated and analyzed by Workbench and Fluent software.The results show that the average wall temperature is between 190~350 ℃ when the radiation distances is 400 to 900 mm.The increase of outlet pressure and wall temperature leads to the decrease of convective heat transfer coefficient,while the increase of flow rate leads to the increase of convective heat transfer coefficient.The increase of flow rate and outlet pressure leads to the decrease of outlet temperature,the increase of system flow leads to the increase of compressed air pressure drop,and the increase of outlet pressure leads to the decrease pressure drop.The wall temperature has no effect on the pressure drop.

关 键 词：集热器 辐射传热 对流传热 仿真分析 

分 类 号：TK11[动力工程及工程热物理—热能工程]