SUNLIGHT UTILIZATION HEAT COLLECTOR BY REFLECTING MIRROR AND REGENERATIVE HEAT-RETENTION FURNACE

摘要

PROBLEM TO BE SOLVED: To provide a sunlight utilization heat collector improved so as to compensate such shortcomings of a conventional technique for collecting sunlight with a reflecting mirror optical system that the focal point area of an optical system focal point for concentrating the sunlight is extremely narrow although very high heat is generated in proportion to the aperture of the optical system in the optical system focal point, solar heat is immediately diffused to the circumferential atmosphere and it lacks efficiency as a heat source, and slight change of solar illuminance due to climate or an atmospheric condition instantaneously influences drop or rise of temperature because the sunlight is directly radiated on an object using the sunlight focal point or its device, whereby a certain averaged temperature can not be provided and operation is not stabilized. SOLUTION: The focal point of the optical system is guided to the inside of a furnace having a high heat-accumulating and heat-retention property and made of refractory bricks having heat resistance; the sunlight is radiated to a heating element installed in the furnace to accumulate and keep high heat generated in the heating element; the heat is prevented from diffusing to the atmosphere; and variation of temperature due to solar illuminance is equalized to always provide a relatively stabilized heat quantity. COPYRIGHT: (C)2006,JPO&NCIPI