Auditoría energética de las instalaciones de la empresa ecuatoriana de artefactos S.A. “ECASA”

Abstract

This project performs an energy audit in “Ecuatoriana de Artefactos S.A. ECASA”, which is a factory that manufactures electrical appliances. A baseline of the current energy consumption per unit produced is identified, the opportunities for improvement are identified and the implementation of improvements with zero and low implementation costs is proposed. A verification plan for the implementation of the proposed measures is submitted. The process begins with an assessment without measurements to identify the biggest energy consumers, obtaining electricity (92%), diesel (5%), LPG (3%). Three measurements are made: the quality of electrical energy; overheating on boards; and luminance in working areas. The measurements (baseline) shown that the thermoforming, compressed air and plastic injection have the highest energy consumption per unit produced, with 39,9; 32,4 and 27,1 kWh / unit produced respectively. Energy losses due to overheating (0,214 kWh / uni), feeder losses (0,301 kWh / uni), harmonics (3,649 kWh/uni), improper shift distribution (8,88 kWh/uni), increased of production lot (3,496 kWh/uni), increased equipment efficiency (2,375 kWh/uni) and use of new technologies (25,76 kWh/uni). The total reduction is from 124,82 to 80,15 kWh/uni. The company decides to implement all improvements except the elimination of harmonics, since it requires more than $ 135,000. The total investment is $ 188,555. The annual savings are $ 74,795 and the CO2 reduction is 311 Ton.