Operational Performance of a 5-kW Solar Chemical Reactor for the Co-Production of Zinc and Syngas-Reference-Cited by-同舟云学术

Operational Performance of a 5-kW Solar Chemical Reactor for the Co-Production of Zinc and Syngas

Published:2003-01-27 Issue:1 Volume:125 Page:124-126
ISSN:0199-6231
Container-title:Journal of Solar Energy Engineering
language:en
Short-container-title:

Author:

Kra¨upl Stefan¹,Steinfeld Aldo²

Affiliation:

1. Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen, Switzerland

2. Department of Mechanical and Process Engineering, ETH-Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092 Zurich, Switzerland

Abstract

We report on the improved operational performance and energy conversion efficiency of a 5-kW solar chemical reactor for the combined ZnO-reduction and CH4-reforming SynMet process. The reactor features a pulsed vortex flow of CH4 laden with ZnO particles, which is confined to a cavity-receiver and directly exposed to solar power fluxes exceeding 2000kW/m2. Reactants were continuously fed at ambient temperature, heated by direct irradiation to above 1350°K, and converted to Zn and syngas during mean residence times of 10 seconds. Typical chemical conversion attained was 100% for ZnO and up to 96% for CH4. The thermal efficiency was in the 15–22% range; the exergy efficiency reached up to 7.7% and may be increased by recovering the sensible and latent heat of the products. The SynMet process avoids emissions of greenhouse-gases and other pollutant derived from the traditional fossil-fuel-based production of zinc and syngas, and further converts solar energy into storable and transportable chemical fuels.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/solarenergyengineering/article-pdf/125/1/124/5712772/117_1.pdf

Reference10 articles.

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2. Steinfeld, A., Larson, C., Palumbo, R., and Foley, M., 1996, “Thermodynamic Analysis of the Co-Production of Zinc and Synthesis Gas Using Solar Process Heat,” Energy (Oxford), 21(3), pp. 205–222.

3. Werder, M., and Steinfeld, A., 2000, “Life Cycle Assessment of the Conventional and Solarthermal Production of Zinc and Synthesis Gas,” Energy (Oxford), 25, pp. 395–409.

4. Steinfeld, A., and Spiewak, I., 1998, “Economic Evaluation of the Solar Thermal Co-Production of Zinc and Synthesis Gas,” Energy Convers. Manage., 39(15), pp. 1513–1518.

5. Steinfeld, A., Brack, M., Meier, A., Weidenkaff, A., and Wuillemin, D., 1998, “A Solar Chemical Reactor for the Co-Production of Zinc and Synthesis Gas,” Energy (Oxford), 23(10), pp. 803–814.

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