Photovoltaic storage solar collector: Experimental assessment
Abstract This article introduces a new design of solar storage collectors integrated with a PV panel for domestic applications. Two identical practical models were built to test the
This method of concentrated solar collection has the advantage of high efficiency and low cost, and can be used either for thermal energy collection, for generating electricity or for both, therefore it is an important way to exploit solar energy directly.
Observe the collector from the front of it, near the edge of one side. One can see the reflected image of the receiver, whose background is the blue sky. Use something to cover the direct sunlight reaching the observing side of the collector, which would interfere with the observation.
The maximal height of the sun is therefore 22.8°, from which one can estimate the irradiance to be not exceeding 800W. At a concentration ratio of 85.6 times, the maximal heat output of the collector is about 570W, heat losses being reduced to a negligeable level by a fluid temperature close to that of the environment.
In any case, avoid as much as possible looking directly into the reflected sun, to protect your eyes. The basic method for checking the optical precision of a solar collector is to put it into tracking position under the sun, then observe the receiver from all positions and angles.
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