Análise da viabilidade de implantação de sistema automatizado de recalque de água que abastece o CETENS

Abstract

This work presents an analysis of the feasibility of implantation of an automated system (popularly known as "pea float"), which aims to save energy and reduce water waste in CETENS – UFRB, located in Feira de Santana – BA. The high reservoir starts pouring water when it is completely full, but due to the fact that the pump has a manual override it is necessary that someone is willing to shut down to stop the waste of electricity. After this, for a month, it was measured that the average time of waste is 20 min per day of pump activation (post-filling of the reservoir), with 8 on/off events per month. With the scarcity of data such as pump power and pipe diameter, the literature allowed us to estimate some values reliably, and it was possible to find out that the monthly cost of the submerged pump was unduly connected while the water tank was R$ 2,06. As the cost of implementing the evaluated system was R$ 229,56 this represents an estimated investment payback period of 112 months. However, the waste of water was around 40.500 liters in the month, proving that although economically does not show a justifiable investment, environmentally, represents a huge amount of water to be saved.