AN ENERGY EFFICIENT HYBRID SYSTEM FOR BATH WATER HEATING
DOI:
https://doi.org/10.59627/cbens.2014.2143Keywords:
Solar Energy, Energy Efficiency, Heating System, Modeling, System AutomationAbstract
This paper presents a domestic water heating unit, with high level of automation, specially designed to reduce energy consumption in Brazilian residences, where almost 25% of electrical energy is spent to heat water for bathing. The system is composed basically by solar plates, a boiler and an electric shower. Automatic valves and power controllers are used to regulate the temperature and flow during the bath. A microcontroller is responsible to control the system, aiming to meet the requirements (temperature and water flow) defined by the user, without being necessary that he or she opens the cold or hot water valves or regulates the shower’s power, increasing the user’s comfort. The second goal of the system is to reduce energy consumption and decrease waste of water in beginning of the shower. A mathematical model was developed and a prototype was used to validate it. The proposed system proved to be economically viable, saving expressive quantities of electrical energy and water if compared to traditional systems.
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