直接接触冷凝器中流动及传热特性  

Flow and heat transfer characteristics in novel direct contact condenser

作　　者：高飞[1] 宋宁[1] 黄哲庆[1] 刘春江[1] 

机构地区：[1]天津大学化工学院化学工程联合国家重点实验室天津化学化工协同创新中心,天津300072

出　　处：《化学工程》2014年第10期41-44,共4页Chemical Engineering(China)

摘　　要：利用SV型和SK型静态混合器,并以粉末烧结的微孔钛曝气器为气体分布器,开发出一种新型直接接触冷凝器。在空气-水和水蒸气-水体系中测试并比较2种新型直接接触冷凝器的流体力学性能及冷凝传热性能。结果表明:装有SV型静态混合器的新型直接接触冷凝器较装有SK型静态混合器的新型冷凝器对水蒸气的分布更加均匀,具有更好的吸收效果,钛曝气器的利用可有效提高换热效率,并降低水蒸气冷凝所引起的振动与噪声。A novel direct contact condenser with SV/SK-static mixer was developed. A sintered powder airblast head was used as the gas distributor. The heat transfer performance of two novel condensers was tested in the air- water and steam-water system respectively. The experimental results show that the vapour bubbles size of the novel direct contact condenser with SV-static mixer is more uniform than that of the direct contact with SK-static mixer; and the heat transfer efficiency in the SV-static mixer is better than that in the SK-static mixer; however, the novel direct contact condenser with SV-statie mixer has a higher pressure drop and a larger two-phase flow resistance than that with SK-static mixer. Moreover, the application of airblast head in such condensers can effectively improve the heat transfer efficiency and reduce the noise and vibration caused by the condensation of steam.

关 键 词：静态混合器 直接接触冷凝器 流体力学性能 传热性能 

分 类 号：TQ051.61[化学工程]