Avaliação da eficiência energética de sistemas de bombeamento de captação de água

Abstract

Currently, the conscious use of energy and water resources has been increasingly addressed in studies and is of great importance for the economic and sustainable development of a region. In sanitation services, the use of electrical energy to drive motors and hydraulic pumps represents a high cost for companies. In this sense, this study's main objective is to evaluate the consumption and determine the efficiency of two pumping systems for water collection, with different starting methods for electric motors (star-delta and soft starter). Furthermore, this study sought to present a preliminary technical and economic feasibility study for the use of photovoltaic energy in these two raw water collection systems. As a result, it can be observed that the two motor pump sets presented energy efficiency equal to, respectively, 63% and 69,9%. Furthermore, it was observed that with the use of photovoltaic energy, to meet the total electrical energy demand of the raw water collection system, a return on investment period of approximately 10,6 years is required. It is worth noting that new studies are needed to improve the efficiency and reduce the costs of implementing photovoltaic energy in the water supply station.