The finned heat exchanger is commonly used as air cooled condenser in small-capacity water chillers and air conditioners. Its heat duty diminishes during peak Indian summer. During these severe conditions, a heat exchanger incorporated with evaporative cooling techniques improves condenser performance and reduces compressor power consumption. When these heat exchangers are combined with cooling pads, which are effectively used in direct evaporative cooling techniques, the heat rejection capacity is improved. Pad material, thickness, and specific contact area are some of the parameters used, in assessing heat exchanger duty. This research work deals with experimental testing of the condenser performance of a water chiller with jute, cotton, and coconut fiber cooling pads. Also, the positioning of the pad concerning the heat exchanger and fan has been varied to assess the heat rejected from the condenser. When the cooling pad is placed in between the fan and condenser, all three pads exhibit enhanced performance in removing heat from the condenser due to better utilization of evaporative cooling. Out of the three pads, jute fiber performs better, where chilling is 23.5 % faster when compared with cotton fiber and 47.1 % faster when compared with coconut fiber. When the jute fiber pad is placed in between the fan and condenser, the water chilling rate is better by 76.5 %, when compared with pad positioning before fan and condenser and 11.8 % when compared with pad positioning after fan and condenser.

翅片式换热器常用作小容量冷水机和空调中的风冷冷凝器。它的热负荷在印度夏季高峰期减少。在这些严酷条件下，采用蒸发冷却技术的热交换器可提高冷凝器性能并降低压缩机功耗。当这些热交换器与在直接蒸发冷却技术中有效使用的冷却垫结合时，散热能力得到提高。垫材料、厚度和特定接触面积是评估热交换器负荷时使用的一些参数。这项研究工作涉及对带有黄麻、棉花和椰子纤维冷却垫的冷水机的冷凝器性能进行实验测试。还，与热交换器和风扇有关的衬垫的位置已经改变，以评估从冷凝器排出的热量。当冷却垫放置在风扇和冷凝器之间时，由于更好地利用蒸发冷却，所有三个垫在从冷凝器移除热量方面表现出增强的性能。在这三种垫子中，黄麻纤维表现更好，与棉纤维相比，冷却速度快 23.5%，与椰子纤维相比，冷却速度快 47.1%。当黄麻纤维垫放置在风扇和冷凝器之间时，与放置在风扇和冷凝器之前的垫相比，水冷却率提高了 76.5%，与放置在风扇和冷凝器之后的垫相比，提高了 11.8%。由于更好地利用蒸发冷却，所有三个垫在从冷凝器中去除热量方面都表现出增强的性能。在这三种垫子中，黄麻纤维表现更好，与棉纤维相比，冷却速度快 23.5%，与椰子纤维相比，冷却速度快 47.1%。当黄麻纤维垫放置在风扇和冷凝器之间时，与放置在风扇和冷凝器之前的垫相比，水冷却率提高了 76.5%，与放置在风扇和冷凝器之后的垫相比，提高了 11.8%。由于更好地利用蒸发冷却，所有三个垫在从冷凝器中去除热量方面都表现出增强的性能。在这三种垫子中，黄麻纤维表现更好，与棉纤维相比，冷却速度快 23.5%，与椰子纤维相比，冷却速度快 47.1%。当黄麻纤维垫放置在风扇和冷凝器之间时，与放置在风扇和冷凝器之前的垫相比，水冷却率提高了 76.5%，与放置在风扇和冷凝器之后的垫相比，提高了 11.8%。