This paper presents a novel idea of utilizing nanofluid as external cooling jacket around the condenser of an air conditioner. Experimental investigations were carried out to study the influence of two types of nanofluids namely, copper and aluminum oxide nanofluids on the performance of an air conditioner. The nanofluids were used to enhance the heat transfer by means of providing an external nanofluid medium around the condenser section. Both Cu and AlO nanofluids were prepared in three volume fractions of 1%, 2% and 5% with water as the base fluid. The performance of the air conditioner was evaluated by comparing the coefficient of performance when the system is operated with and without nanofluid. Experimental results indicate that employment of Cu and AlO nanofluids causes a significant enhancement in the COP. As the volume fraction was increased, the performance was found to increase. For the highest volume fraction of 5%, AlO nanofluid was found to enhance the COP by a maximum of 22.1% while copper nanofluid exhibited a more significant enhancement by 29.4%.

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利用纳米流体提高空调效率：实验研究

本文提出了一种利用纳米流体作为空调冷凝器周围外部冷却套的新颖想法。进行了实验研究，以研究两种类型的纳米流体，即铜和氧化铝纳米流体对空调性能的影响。纳米流体用于通过在冷凝器部分周围提供外部纳米流体介质来增强传热。以水为基液，制备了 1%、2% 和 5% 三种体积分数的 Cu 和 Al2O 纳米流体。通过比较系统在有纳米流体和没有纳米流体的情况下运行时的性能系数来评​​估空调的性能。实验结果表明，使用 Cu 和 Al2O 纳米流体可显着提高 COP。随着体积分数的增加，性能也随之提高。对于最高体积分数 5%，Al2O3 纳米流体的 COP 最大提高了 22.1%，而铜纳米流体表现出更显着的提高，提高了 29.4%。