AN AUTOMATICALLY RE-ORIENTABLE MODULAR TYPE SOLAR THERMAL SUN TRACKER FOR PHOTOVOLTAIC ARRAYS

摘要

The invention relates to an automatically re-orientable solar thermal sun Tracker for tracking the Sun from morning to evening to produce increased power output, comprising: a supporting device consisting of one each top, middle and bottom portion, the top portion formed of a panel fixing frame fixed on a rigid shaft detachably attaching a plurality of photovoltaic (PV) modules, the middle portion consisting of two pole members with a base plate affixed at a lower end, at the top end of the middle portion of the pole members, one each stopper angle is fixed to limit the movement angle of the panel fixing frame on East and West side, the stoppers provided with vibration dampers to dampen the vibrations and noise in case the tracker hits the stopper due to sudden high winds, the upper end of the each pole member having a plummer block bearings in which a shaft rigidly connected to the two pole members, the bottom portion of the pole member assembly accommodating the base plate of the middle portion rigidly fixed to a concrete base; at least two containers having volatile fluid located at the extreme ends of the panel fixing frame which rotates along East to West direction with the axis of rotation oriented North - South direction, the container flowably connected to each other via an inter- connecting tube for fluid-transfer; a plurality of shadow casting covers provided to the container such that depending on the position of the sun, the covers allow the respective container distal to the sun rays to receive higher impingement generating a temperature differential of the volatile liquid in two containers which leads to inter-transfer of the liquid between the containers including application of gravitational force in the containers which causing the tracker to automatically tilt from West to East direction in the morning after the sunrise, and East to West direction during the day time, the tracker facing the west after the Sun set.