Análise comparativa do desempenho de sistemas de aquecimento de água em edificações residenciais

Abstract

The current energy source scenario has the electric shower as the main source of water heating in Brazilian houses, about 73% use this source. The main reason for this is the low cost and simplicity of acquiring and implementing this system. Despite the infrastructure of most homes in Brazil being prepared to receive the electric water heating system, it is not the cheapest. In 2021, Brazil went through one of the worst droughts of the century, worsening an energy crisis and the consequences of this crisis are the increase in the cost of electricity and the risk of blackouts, as happened in 2001. This work aims to define parameters for decision-making when choosing between a gas and electric residential heating system. The work will be done through information from suppliers, budgets and projects from companies in the field, all with an interest in this study, which guarantees the viability of this work. This study compares the installation costs and costs of electric and gas heaters, through a desing model of a 4-person residence, with defined consumption parameters to help professionals and consumers to make the best decisions when choosing their residential water heating system.