Solar heat collection system - with two primary circuits at different temp. levels using heat storage tanks and heat exchanger

摘要

A solar heat collection system uses two separate primary circuits which are run at high and at very high temp., respectively, and use as heat carrier media molten salts with properties to suit the different temp. ranges. Heat storage tanks in each circuit are used to keep up the temperature in the system when solar radiation is absent. Each circuit includes a heat exchanger in which a working medium (water) is heated in stages to a high temp. The uniform temp. lengthens the service life of the collectors. An industrial turbine can be run at a satisfactory efficiency.