太阳能空气集热器吸热板结构优化及其数值模拟  

The absorber plate structure optimization for the solar air collector and its numerical simulation

作　　者：程友良[1] 杨国宁[1] 王月坤 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《可再生能源》2016年第7期949-954,共6页Renewable Energy Resources

基　　金：中央高校基本科研业务费专项资金(2014MS110)

摘　　要：文章提出了一种新型抛物线型吸热板结构的太阳能空气集热器,建立其数学模型和物理模型,运用ANSYS数值模拟软件,对不同入口流速和倾角下集热器内空气换热特性进行数值模拟。结果表明:随着流速的增加,3种吸热板集热器瞬时效率逐渐增加;随着倾角的增加,集热器瞬时效率先增加后减小,在倾角30°时最大;对比传统平板和三角波纹吸热板结构,抛物线型空气集热器具有较高的瞬时效率和较小的压损。A novel parabolic structure type absorber plate was proposed, the mathematical and physical models were established, and then the ANSYS 14.0 FLUENT software was applied into the numerical simulation. The different inlet velocity and the air collector inclination were selected to simulate and explore the characteristics of the air heat transfer. The results show that the instantaneous efficiency of three kinds of plate air collector gradually increases with inlet velocity increasing. Its instantaneous efficiency of three kinds of plate air collector increases and then decreases, and its highest efficiency occursat 30 ° angle. Comparison with the traditional flat and triangular corrugated absorber plate structure, the parabolic absorber plate air collector has high instantaneous efficiency and smaller pressure loss.

关 键 词：太阳能空气集热器 吸热板 结构优化 数值模拟 

分 类 号：TK513.3[动力工程及工程热物理—热能工程]