Performance Evaluation of Split AC Systems Integrated with Natural Fiber-Based Evaporative Cooling Media

Abstract

This study examines the integration of a biodegradable jute-based evaporative cooling pad within a standard split air conditioning (AC) system to promote energy efficiency and performance in high ambient temperatures. The suggested system places a wetted jute rope matrix ahead of the condenser coil, where ambient air is pre-cooled before it enters the condenser. This pre-cooling benefit lowers the condensing temperature of the refrigerant and thus decreases compressor load and total power usage. A series of experimental tests was performed for the duration of a full diurnal cycle (8:00 AM–6:00 PM) with hot and dry ambient conditions where the peak ambient temperature reached 46°C. Important performance parameters like indoor temperature, temperature of evaporator coil, suction/discharge line pressure and temperature, and electrical power consumption were monitored prior and subsequent to installing the jute-based cooling pad. The system recorded a power consumption decrease of as much as 20%, a discharge pressure reduction from 395 psi to 367 psi, and an upsurge in Coefficient of Performance (COP) by as much as 42%. These enhancements were particularly valuable at hours of peak thermal loads. The research finds that the evaporative pre-cooling system based on jute is a feasible, renewable, and low-cost retrofit option, which is particularly useful for energy-deficient countries and hot and dry climates.