CAJ | 학술논문

针对气-气换热的特点，开发出了一种新型的波纹扁管换热器。构建了热空气与冷空气换热的实验系统，热空气在管程流动，冷空气在壳程流动，实验研究了波纹扁管气-气换热器的传热性能，并采用Fluent 6.3软件对壳程空气的传热与压降进行了数值模拟。结果表明，当管程空气流速为20 m?s?1，壳程空气流速在15~25 m?s?1，换热器的总传热系数为81~88 W?m?2?K?1。壳程传热系数和壳程压降的数值模拟结果与实验值吻合良好。波纹扁管换热器具有高效紧凑的优点，适用于气-气换热领域。
침대기-기환열적특점，개발출료일충신형적파문편관환열기。구건료열공기여랭공기환열적실험계통，열공기재관정류동，랭공기재각정류동，실험연구료파문편관기-기환열기적전열성능，병채용Fluent 6.3연건대각정공기적전열여압강진행료수치모의。결과표명，당관정공기류속위20 m?s?1，각정공기류속재15~25 m?s?1，환열기적총전열계수위81~88 W?m?2?K?1。각정전열계수화각정압강적수치모의결과여실험치문합량호。파문편관환열기구유고효긴주적우점，괄용우기-기환열영역。
Aimed at the characteristics of gas-to-gas heat transfer, a novel heat exchanger with the corrugated flat tubes is developed. An experimental system for researching heat transfer process between hot air with cold air is set up. In the experimental heat exchanger, the hot air flows in tube side and the cold air flows in the shell side. The Fluent 6.3 software was used to simulate heat transfer coefficient and pressure drop in the shell side. Results show that while the hot air velocity is 20 m?s?1 in the tube side, the cold air velocity within 15 to 25 m?s?1 in the shell side, the total heat transfer coefficient of heat exchanger is 81~88 W?m?2?K?1. The numerical simulation heat transfer coefficients and the simulated pressure drops are in good agreement with correspondent experimental data. Corrugated flat tube heat exchanger has the advantages of high efficiency and compact, it is suitable for application in gas-to-gas heat transfer field.