Exergetic performance indicators of a direct evaporative cooling system with different evaporative cooling pads

Exergetic performance indicators (EPIs) of a direct evaporative cooling system (DECS) with different evaporative cooling pads (ECPs) are presented. The objective is to determine the performance and exergetic sustainability indicators of three ECPs (wood charcoal, shredded foam latex and jute fibre). The EPIs include exergy efficiency (EE), waste exergy ratio (WER), the exergetic coefficient of performance (ECOP), exergy destruction factor (EDF) and sustainability index (SI). The calculated EE values lie between , and for shredded foam, wood charcoal and jute fibre respectively while the EDF, WER, ECOP and SI ranged between, , and respectively. The EDF was the maximum in shredded foam latex and low for wood charcoal. Conversely, a comparative analysis between the DECS and mechanical vapour compression system shows that an average of 18.92 tonnes/year of CO2 emissions can be avoided if the DECS was preferred. Additionally, jute fibre showed good performance and high SI, thus, its adoption in the DECS is worthwhile.