| 摘要 |
PURPOSE:To increase the solar energy conversion efficiency of the titled system by a method wherein in the case of the optical energy conversion system using a photochemical heat storage material adopted to convert solar energy into thermal energy for the collection and storage of heat, the photochemical heat storage material is temporarily isolated from a reaction system during or after the application of the solar rays upon the material. CONSTITUTION:A cyclohexane solution of trans-azobenzene refined by recrystallization is received within a qualtz cell 4 and the solar rays are applied on the solution at normal temperature. Then, after the application of the solar rays, the solution is circulated and cis-azobenzene generated from the solution is absorbed completely by an absorbing column 6 through a liquid inlet port. After that, the circulation of the solution is stopped and then the application of the sunlight on the solution is performed and so on in a repetitive fashion during which only non-reacted trans-azobenzene is repeatedly applied with the sunlight. Consequently, the solar energy conversion efficiency of the system increases remarkably as compared to a case where the absorbing column 6 is not used. The generated substance absorbed by the column 6 is used after it is transferred into a storage tank by heating the column or by adding a solution of a separating agent to the column. |
