Abstract
The use of sanitary water is a main aspect of comfort and healthiness within a house or a public environment as gyms or beauty farms. At the same time, water waste should be limited to a minimum in order to preserve both water and the energy required to warm it. To obtain these results, it is necessary to rule quickly and in a precise way the temperature. It is also necessary to check the presence of possible contemporary flow requested by different users in order to optimize distribution in the house network. This work describes a mechatronic water mixer that was developed to ensure fast and precise control of flow and temperature of delivered water. The flow control is based on modulating digital valves driven in pulse code modulation and on a microcontroller board. The electronic unit is designed to interface with a domotic network for remote control and total consumption monitoring and optimization.
Highlights
Water and energy consumption should be consistently limited in order to reduce the environmental impact of human activities
It must be kept in mind that in order to maximize the efficiency of solar thermal storage systems and to prevent legionella, it is mandatory to store warm water at high temperature, at least 60 °C.3
In order to obtain a fast response of the system, a mechanical solution in which hot and cold water supply flow are governed by a set of digital actuators controlled in pulse code modulation (PCM) was used
Summary
Water and energy consumption should be consistently limited in order to reduce the environmental impact of human activities. This work describes a solution that was developed by the authors to construct an automated thermostatic mixer in which flow rate and temperature are remotely ruled by a control board and water consumption data are acquired and transmitted. In order to obtain a fast response of the system, a mechanical solution in which hot and cold water supply flow are governed by a set of digital actuators controlled in pulse code modulation (PCM) was used.
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