Abstract
Since fossil fuel like petroleum, coal, and natural gases will sooner or later run out in this or next century, natural energy like solar, wind, and biomass will rise as one of alterative energy sources. Most of the conventional solar thermal electric systems utilize high-temperature difference. In the present paper, an advanced solar Rankine cycle system with CPC (Compound Parabolic Concentrator) collector and steam accumulator of phase-change type was newly proposed. And the new steam turbine (expander) was invented and designed under the "Concept of Superposition". This paper reports experimental results of the proposed system under heat stored accumulator conditions.
