热力发电Issue(1)：30-33,4.DOI:10.3969/j.issn.1002-3364.2015.01.030
基于场协同的多叶螺旋线圈强化管内对流换热研究
Field synergy theory based convective heat transfer in an enhanced tube with multiple spiral coils
摘要
Abstract
To solve the prominent problem of convective heat transfer enhancement in solar collector tubes, experimental investigation on enhancing heat transfer between tube well and medium by copper inserts with double multiple spiral coils and three multiple spiral coils was conducted,by using field synergy theory.The results show that,the convective field synergy number Fc increases sharply with the synergy angle cosine cosβin the multiple spiral coils tubes.Moreover,the velocity field and temperature field also show a good cooperativity.The working fluid with three spiral coils has the best comprehensive heat trans-fer performance,under the condition with constant heat flow (240<Re<2 300)for the experiment with water as the medium.关键词
平板太阳能集热器/多叶螺旋线圈/场协同/强化换热Key words
flat-plate solar collector/multiple spiral coils/field synergy/heat transfer enhancement分类
能源科技引用本文复制引用
金光,王正文,田瑞,于晔..基于场协同的多叶螺旋线圈强化管内对流换热研究[J].热力发电,2015,(1):30-33,4.基金项目
国家自然科学基金资助项目(50766002) （50766002）
