TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The composite optical solar energy heating system is composed of condenser and a heliostat. The mirror is a paraboloid mirror glass, where the glass lens is single glass structure or multiple unit arc glass formed by splicing. The back of the glass mirror is provided with mercury material. The heliostat is plane structure composed of a single lens or multiple lenses. The heliostat base is provided with a hydraulic driving or electric device. The heliostat is positioned to the sun for reflecting sunlight to view-field collecting mirror. The gas heating chamber is flat rectangular structure. The gas heating chamber is installed with 1-10 layers of heating plate, which is silicon carbide heat absorbing plate. The silicon carbide heat absorbing plate has ladder-type arrangement. On end of gas heating chamber is provided with an inlet pipe, and the other end is provided with outlet pipe. The direction of incident light is provided with a light-receiving glass. The solar energy calcining chamber is set with an air inlet, a gas outlet and a spiral conveying machine. The solar calcining chamber is set on the upper part of light receiving double-layer glass, and the lower part is provided with an ash drawer. A hydraulic push rod (6) is connected with the chamber. The double layer light receiving glass is provided with cooling pipe. The cooling medium in cooling pipe is water, glycerol or normal hexane. The electrolytic water-oxygen generating device comprises a photovoltaic battery, a wind-powered generator, an electrolytic cell, a water tank, an oxygen storage tank and hydrogen storage tank. The wind power generator and the photovoltaic battery is connected to the electrolytic cell to the electrode water tank. The oxygen collector of the electrolytic cell is connected to the oxygen storage tank. The hydrogen collector is connected with the hydrogen storage tank. The material conveying device is a chain conveyor, bucket conveyer or spiral conveyer. The coal gas generator is a shell-type gas generator.