The current numerical study has explored the effect of incorporation of rectangular winglets with circular, flat and oval tubes on the performance of compact heat exchangers. Rectangular winglet pairs are mounted behind the tubes at a span angle of 5° to obtain the enhanced performance. The obtained results show that fin and oval tube heat exchanger (FOTHE) having rectangular winglet pairs (RWPs) provides the higher thermal-hydraulic performance compared to the other configurations, on the basis of area goodness factor (j/f) and heat transfer rate per unit fan power consumption (Q/P_f). MOORA method also incorporated to obtain the performance ranking of the considered configurations of compact heat exchangers. The optimal configuration i.e. finned tube heat exchanger having oval tubes with rectangular winglet pairs, provides an increment of 13.84% and 9.99% in the heat transfer coefficient of air (h) at Re = 400 and Re = 900 respectively, compared to the baseline case. Moreover, an appreciable reduction of 26.61% and 29.79% in the pressure drop (∆p), compared to the baseline case, is obtained at Re = 400 and Re = 900 respectively.

当前的数值研究已经探索了将矩形小翼与圆形，扁平和椭圆形管结合在一起对紧凑型热交换器性能的影响。矩形小翼对以5°的跨度角度安装在管子后面，以获得增强的性能。获得的结果表明，基于面积良率（j / f）和传热率，具有矩形小翼对（RWP）的翅片和椭圆管式换热器（FOTHE）与其他配置相比，具有更高的热工性能。单位风扇功耗（Q / P _f）。还引入了MOORA方法来获得紧凑型热交换器所考虑配置的性能等级。最佳配置，即具有椭圆形管和矩形小翼对的翅片管换热器 ，与基准情况相比，分别在Re  = 400和Re = 900时，空气的传热系数（h）分别增加了13.84％和9.99％。。此外，与基准情况相比，在Re  = 400和Re  = 900时，压降（∆p）分别降低了26.61％和29.79％。