Eficiência energética aplicada em sistemas de refrigeração comercial de um supermercado localizado em Porto Alegre - RS

Abstract

This work discusses the presentation of easily applicable proposals for power consumption reduction in refrigeration systems in a supermarket with 1,000 m2 of sales area, in Porto Alegre/RS. For this, an energy analysis was carried out, comparing the solutions proposed with the available systems. Four proposals for improvements were analyzed: (1) usage of low power consumption engines in refrigerated cabinets and refrigeration chambers; (2) usage of LED lighting systems in the refrigerated cabinets; (3) installation of doors in vertical refrigerated cabinets; and (4) the joint application of improvement proposals 1 and 3. The most efficient proposal was the last one (4), as this allowed to achieve the greatest reduction in energy consumption (above 28%). The use of doors in the vertical refrigerated cabinets (Improvement 3) resulted in a reduction of 17.17% in power consumption. In addition, the economic viability analysis was also performed, with Improvement 4 showing a rapid return on investment, with a return time of one year and two months. For the analysis of the net present value (NPV) method, the best investment option is Improvement 3 with a value of R$ 213,553.50.