Production of hydrogen and carbon by solar thermal methane splitting. II. Room temperature simulation tests of seeded solar reactor

被引:56
作者
Kogan, A [1 ]
Kogan, M [1 ]
Barak, S [1 ]
机构
[1] Weizmann Inst Sci, Solar Res Facil, IL-76100 Rehovot, Israel
关键词
hydrogen production; solar methane splitting; seeded solar reactor;
D O I
10.1016/j.ijhydene.2003.12.002
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In the design of a solar thermal methane splitting reactor seeded with powder particles, care must be taken to prevent destruction of the reactor window by contact with incandescent solid particles. The method of screening the window by application of the tornado flow configuration (Int. J. Hydrogen Energy 28 (11) (2003) 1187) inside the reactor enclosure was studied experimentally by reactor flow simulation tests at room temperature. A secondary effect of the tornado flow pattern was identified during these tests. Friction between the swift jet of gas leaving the reactor enclosure in the axial direction and the surrounding relatively quiescent gas engenders a weak stream of gas along torroidal streamlines. Solid particles entrained by this secondary stream are carried towards the reactor window, An efficient gasdynamic method is described by which the above-mentioned negative effect is counteracted and eliminated. A solar reactor model of a special design was developed in order to enable demonstration of the effectiveness of the proposed method. Carbon black powder seeding tests were performed with this reactor model. Powder seeding conditions under which the reactor window is perfectly screened were determined by experiment. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1227 / 1236
页数:10
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