三角形波纹翅片管换热器传热与阻力特性的实验研究

AN EXPERIMENTAL INVESTIGATION ON HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS OF TRIANGULAR WAVY FIN-AND-TUBE HEAT EXCHANGER SURFACES

对不同管排数及不同翅片间距的９个三角形波纹翅片管换热器试件进行了传热与阻力特性试验，给出了实验特性曲线及关联式，并对管排数及翅片间距的影响规律进行了分析讨论，得出了有益的结果，另外，对三角形波纹翅片与平直翅片的结果进行了比较。

Air-side heat transfer and pressure drop performances of nine triangular wavy fin-and-tube heatexchanger coils were experimentally investigated.The Nusselt number and friction factor correlationswere provided in a wide range of Reynolds number.The results revealed the effects of fin space andthe number of tube rows on heat transfer and pressure drop.In addition,the present results were com-pared with those of plain plate fin and triangular wavy fin heat exchanger surfaces in the literature.