Accession Number : ADA187612


Title :   A Solar Receiver-Reactor with Specularly Reflecting Walls for High-Temperature Thermoelectrochemical and Thermochemical Processes


Descriptive Note : Technical rept.


Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Steinfeld, A ; Fletcher, Edward A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a187612.pdf


Report Date : 27 Oct 1987


Pagination or Media Count : 39


Abstract : A new kind of receiver-reactor for high temperature solar furnaces is proposed. The main body of the receiver component is an ellipsoid of revolution with specularly reflecting inner walls. The reactor component, a crucible, is placed at one focal point and the aperture at the other. With this arrangement, substantially all of the incident radiation from the concentrator should reach the reactor directly or after one reflection from the cavity walls. An analysis of the radiative exchange among the surfaces is presented. The analysis provides a tool for a parametric study and optimization of the design. It is found that, in contrast to that of conventional well-insulated cavity receivers, its collection efficiency is not very sensitive to the size of its aperture. Keywords: Solar, electrolysis, Solar thermal, Solar thermoelectrochemical, Reactors, Receivers, Furnaces.


Descriptors :   *SOLAR FURNACES , HIGH TEMPERATURE , EFFICIENCY , RADIATIVE TRANSFER , HEAT EXCHANGERS , CAVITIES , REFLECTION , ELLIPSOIDS , RECEIVERS , THERMOCHEMISTRY , REACTOR SYSTEM COMPONENTS , WALLS , COLLECTION , THERMOELECTRIC POWER GENERATION , ELECTROLYSIS , BODIES OF REVOLUTION , OPTIMIZATION , PARAMETRIC ANALYSIS


Subject Categories : Electric Power Production and Distribution


Distribution Statement : APPROVED FOR PUBLIC RELEASE