Diseño e implementación de un sistema difuso para el control del caudal y la temperatura del agua para calentadores solares de uso doméstico.

Abstract

The objective of the present investigation was the design and implementation of a diffuse system for control of water flow and temperature for solar heaters for domestic use. For the hardware development was used the Arduino platform and for the software the Simulink package. He system mixes water from two independent outlets, one from cold water from a reservoir or from the local drinking water network, and a hot water supply provided by a solar heater domestic. A physical interface was implemented that allows the user to specify the values ​​of temperature and flow and reports on the state of the system. Fuzzy logic was used for the control of the variables temperature and flow of the plant, with which it was possible to maintain the value of the temperature indicated by the user with a range of +/- 2% and the flow rate with the +/- 3% error in relationship with the set point. The waste of water that occurs from the moment in which the key until the hot water starts to come out through the shower is prevented through a pipeline return to the main reservoir. For similar projects, the conformation of a multidisciplinary team that solves, as in the current research, requirements electronic, mechanical, programming and automatic control.