A new bond graph model of a water disinfection system based on uv lamp feed by photovoltaic source : simulation and experimental results

Abstract EN

This paper presents a bond graph modeling of water treatment pilot unit feed by a photovoltaic (PV) source.

The ultraviolet irradiations are used to solve the bacteriological problem of the drinking water quality.

A gas-discharge lamp is used to produce this type of irradiation.

The UV lamp is fed by PV energy via electronic ballast composed of an inverter, a transformer and resonant circuit (RLC).

The aim of this work is to give a useful global model of the system.

In particular, we introduce the complicated UV lamp model, where the radiant energy flux emitted by the discharge-gas lamp and the arc voltage are a complex functions of the current and time.

In this paper, we developed a bond-graph model which gives the water quality from UV flow, gas type, pressure, lamp current and geometrical characteristic.

This paper presents a Bond Graph (BG) modeling of ultraviolet (UV) water disinfection pilot unit fed by a photovoltaic source which puts a relation of the current consumed by the lamp, until UV flow and the water quality.

Finally a bond-graph model is deduced.

This unit is intended to be mainly used in rural zones where the water availability is often rare.

The use of the photovoltaic modules as source of energy is an adequate solution.

A centrifugal motor-driven pump ensures the circulation of treated water between the two tanks (input and output) through UV lamp.

The pilot unit presents a complex model because of his hybrid components.

For that we used the bond graph methodology to present the B.G models of the various unit elements and a global model for simulation is carried out.

The simulation established is compared with the experimental tests.