Abstract: A system for harnessing solar energy utilizing an inflated balloon having a light transmitting portion and a lower portion thereof lined with a reflecting surface for concentrating the insident reflected solar radiation onto a solar boiler disposed within the balloon. The solar boiler includes a plurality of nested heating stages for progressively increasing the temperature and/or pressure of a working fluid. Each stage includes an outer light transmitting wall with the innermost stage having disposed therein a solar radiation absorption material. The nested stages in turn are enclosed by a light transmitting, low solar absorptive, thermal insulated jacket.

Abstract: A system for economically storing solar energy in the form of heated water. The system includes an above ground swimming pool in conjunction with a solar collector whereby the water of the pool is heated and stored therein until needed for use. In one form of the invention, the solar collector comprises a solar cover overlying or floating on the water in the pool. The cover is provided with an inlet and outlet through which the pool water is circulated and heated by the solar energy penetrating the cover. In another form the solar collector comprises a remotely disposed collector comprising a covered box having therein a plurality of channels connected in liquid flow with the pool water.