HERMITICALLY SEALED SOLAR WATER HEATER FUNCTIONING ON SIPHON ACTION FOR PROVIDING DEMINERALISED PREHEATED WATER TO THERMAL POWER PLANT

摘要

According to present aspect of invention, there is a provided a system for hermitically sealing the water storage tank to prevent the feed water from getting contaminated which is used for generating electricity from the thermal power plant. The system comprises of solar water heater which preheats the feed water by means of solar energy and thereby takes up the water close to the boiling point. So, the major heat input to preheat the feed water is utilized from solar energy and thereby the dependency on the fossil fuel to heat the feed water from its ambient temperature is greatly reduced. The preheated water is further heated by feed water heater by trapping the waste heat from the exhaust gases and the heated feed water is pumped to the boiler and where it is converted to steam by means of heat generated by the combustion of fossil fuel. The steam impinging on the turbine blades drives it which in turn generates power from the generator. The steam is then condensed in the condenser by losing heat to the condensate liquid and the water coming out of condenser is pumped to the overhead water tank and the process of power generation is continued uninterruptedly. Since the feed water gains major heat by means of renewable energy(solar energy), the consumption of fossil fuel is significantly reduced which also reduces the emission of toxic substances to the environment and also the thermal efficiency of thermal power plant is increased.