To improve a solar energy installation for chemical conversions comprising a receiver assembly for solar radiation and a chemical reactor which is supplied with solar radiation energy by the receiver assembly and in which chemical reactions take place due to the action of the solar radiation energy, such that optimum coupling of the solar radiation energy into the reactor is possible and, in addition, the reactor design is as simple and variable as possible and the reactor is connectable to the necessary supply devices in as easy a way as possible, it is proposed that the receiver assembly include several concentrators which each couple the solar radiation into one light guide respectively and that the light guides feed the solar radiation energy to the chemical reactor.
A chemical reactor for a fuel cell system includes a reaction chamber containing at least two reaction partial chambers arranged parallel to one another. The effective reaction chamber cross section on the input side is adjustable by opening or closing the reaction partial chambers. A first reaction partial chamber type is open when the system is started is warmed up more rapidly under comparable operating conditions than the second reaction partial chamber.
A photochemical reactor system employing an optical fibers in the form of a cable to transmit light to solid-supported TiO.sub.2 -containing photocatalyst is disclosed. Light energy is transmitted to TiO.sub.2 -containing particles, chemically anchored onto one or more quartz fiber cores, via radial refraction of light out of each fiber. TiO.sub.2 -containing coating layer minimizes the interfacial surface area of the quartz core and TiO.sub.2 -containing particles and operation with incident irradiation angles near 90.degree. enhance light propagation along the fibers. A maximum quantum efficiency of .phi.=1.1% for the oxidation of 4-chlorophenol was achieved. Fiber efficiency permits the light source to be separated from the photocatalyst.
5862449 - Photocatalytic reactor - Owned by The United States of America as represented by the United States Department of Energy (Washington, DC)
A photocatalytic reactor for processing selected reactants from a fluid medium comprising at least one permeable photocatalytic membrane having a photocatalytic material. The material forms an area of chemically active sites when illuminated by light at selected wavelengths. When the fluid medium is passed through the illuminated membrane, the reactants are processed at these sites separating the processed fluid from the unprocessed fluid. A light source is provided and a light transmitting means, including an optical fiber, for transmitting light from the light source to the membrane.
