Much of the present and future technology will be based on electronic devices that are operated using an electronic clip. Due to the continuous operation of the majority of electronic devices, the efficiency of such devices decreases because of inefficient cooling techniques. Therefore, the present study experimentally and numerically investigates the thermal resistance and friction factor for the flat plate heat exchanger in the range of Reynolds number 7500–38,000. The study also examines the effect of the number of passes on the thermal performance of a flat plate heat exchanger. Based on the experimental and numerical results of a 4-pass flat plate heat exchanger, the empirical correlation for the thermal resistance and friction factor is suggested to be within the error range of ± 3.5% and ± 5%, respectively. For the optimum performance of the flat plate heat exchanger, the thermal resistance and friction factor should be as low as possible. The numerical results show that the thermal resistance decreases, and the friction factor increases with the number of passes in the flat plate heat exchanger; therefore, out of 2, 4, and 6 passes, the study suggests that 4 passes provide a compromising option for thermal resistance as well as the friction factor.

当前和将来的许多技术将基于使用电子夹操作的电子设备。由于大多数电子设备的连续运行，由于低效的冷却技术，这种设备的效率降低了。因此，本研究通过实验和数值研究了雷诺数为7500–38,000的平板式换热器的热阻和摩擦系数。该研究还研究了通过次数对平板式换热器热性能的影响。根据四通道平板式换热器的实验和数值结果，热阻和摩擦系数的经验相关性建议分别在±3.5％和±5％的误差范围内。为了使平板热交换器达到最佳性能，其热阻和摩擦系数应尽可能低。数值结果表明，在平板式换热器中，热阻减小，摩擦系数增大。因此，在2、4和6道次中，研究表明4道次为热阻以及摩擦系数提供了一个折衷方案。