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<p>Most of the regions of Saudi Arabia experience hot summer temperatures accompanied by low humidity. Due to their high electrical power consumption, conventional air conditioning systems that use a vapour compression cycle are not cost-effective. Thus, one of the best and most affordable options is evaporative cooling using evaporative coolers. The present study experimentally investigates the factors affecting evaporative cooling system performance. Pad materials (composite porcelain with wood waste, iron waste, and aluminium waste) and airflow rate (0.25–0.40&#xa0;kg/s) are the main variables used to investigate the evaporative cooler's performance in terms of pressure drops across the pads, COP, and cooling efficiency. Results show that as the airflow rate across the pad increases, the pressure drops for the first type of cooling pad increase from 10 to 14&#xa0;N/mm<sup>2</sup>, whereas for the second and third type of cooling pads, the pressure drops decrease from 14 to 10&#xa0;N/mm<sup>2</sup> and 12 to 9&#xa0;N/mm<sup>2</sup>, respectively. The COP for the first type of cooping pad does not significantly change with airflow, but the COP for a second and third type of cooling pads decreases from 2.25 to 2 and 1.85 to 1.55, respectively, as the airflow rate across the pads increases.</p>

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Experimental Investigation of Using Waste Materials as Cooling Pads for Evaporative Cooling System

  • 期刊论文

  • 发表日期：

    2025年1月10日

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  • Abdulmajeed Almaneea

摘要

Most of the regions of Saudi Arabia experience hot summer temperatures accompanied by low humidity. Due to their high electrical power consumption, conventional air conditioning systems that use a vapour compression cycle are not cost-effective. Thus, one of the best and most affordable options is evaporative cooling using evaporative coolers. The present study experimentally investigates the factors affecting evaporative cooling system performance. Pad materials (composite porcelain with wood waste, iron waste, and aluminium waste) and airflow rate (0.25–0.40 kg/s) are the main variables used to investigate the evaporative cooler's performance in terms of pressure drops across the pads, COP, and cooling efficiency. Results show that as the airflow rate across the pad increases, the pressure drops for the first type of cooling pad increase from 10 to 14 N/mm2, whereas for the second and third type of cooling pads, the pressure drops decrease from 14 to 10 N/mm2 and 12 to 9 N/mm2, respectively. The COP for the first type of cooping pad does not significantly change with airflow, but the COP for a second and third type of cooling pads decreases from 2.25 to 2 and 1.85 to 1.55, respectively, as the airflow rate across the pads increases.