Refurbishmentofsplitairconditioningunit in Mechnicalengineeringlaboratory

Student: Azebeokhai Abu (Project, 2025)
Department of Mechanical Engineering Technology
Auchi Polytechnic, Auchi, Edo State

Abstract

ABSTRACT This project investigates the refurbishment of a split air conditioning unit as a sustainable alternative to complete system replacement. The study details a comprehensive step-by step methodology for refurbishing a used residential split AC unit, encompassing preliminary inspection, disassembly, component cleaning, repair and replacement of degraded parts (Compressor, Capacitor ), reassembly and rigorous system checks. Performance evaluations were conducted before and after refurbishment to quantify improvements in key metrics. Results demonstrate a significant enhancement in performance, with cooling capacity increased by 12.7% from 3.15kW to 3.55kW, and energy efficiency ratio (EER) improved by 17.9% from 2.85kw to 3.36kw. Power consumption slightly decreased by 4.2% despite the increased cooling output, and airflow rate improved by 11.6%. Refrigerant leak rate was reduced to negligible levels. The findings confirm that refurbishment is a technically feasible and effective approach to restore and enhance the performance of split AC units, offering substantial energy efficiency gains and environmental benefits compared to replacement. This project underscores the potential of refurbishment as a viable strategy for promoting sustainability and circulate economy principles within the HVAC sector

Keywords
Split air conditioning Refurbishment Mechanical Engineering Laboratory Cooling efficiency Maintenance Performance improvement Air conditioning system Equipment repair
Filters
Institutions