tailieunhanh - HYDROGEN TRANSMISSION/STORAGE WITH METAL HYDRIDE-ORGANIC SLURRY AND ADVANCED CHEMICAL HYDRIDE/HYDROGEN FOR PEMFC VEHICLES

The results presented in Figure 2 and 3 can be explained by the fact that the organic industry in South Africa is relatively new and the domestic market is limited in the variety of organic products available. In South Africa, food retailers have the largest share of the organic industry. Similarly, most products are sold through the export market due to the higher revenue from foreign exchange. Irwin (2002) says that South Africa has a favourable position for expansion in the domestic market as a result of the following developments in the organic. | Proceedings of the 2000 . DOE Hydrogen Program Review NREL CP-570-28890 HYDROGEN TRANSMISSION STORAGE WITH METAL HYDRIDE-ORGANIC SLURRY AND ADVANCED CHEMICAL HYDRIDE HYDROGEN FOR PEMFC VEHICLES Andrew W. McClaine Dr. Ronald W. Breault Christopher Larsen Dr. Ravi Konduri Jonathan Rolfe Fred Becker Gabor Miskolczy Thermo Technologies a Thermo Electron Company 45 First Avenue Waltham MA 02454-9046 Abstract This paper describes the work performed on two programs supported in part by the . Department of Energy. These programs are aimed at evaluating the potential of using slurries of chemical hydrides and organic liquids to store hydrogen. The projects have been very successful in meeting all project objectives. After a detailed analysis of chemical hydrides lithium hydride was selected for use in these programs. Lithium hydride has been prepared as a slurry with light mineral oil and a dispersant and has been found to be stable for long periods of time at atmospheric temperatures and pressures. We have demonstrated that the lithium hydride slurry can be mixed with water to produce hydrogen on demand. Reactions between the lithium hydride slurry and water take place rapidly and completely. The resulting lithium hydroxide can be recycled either by electrolytic methods or by a carbo-thermal process. Experiments with the carbo-thermal process indicate that the regeneration of lithium hydride can be accomplished at temperatures of 1500 K or less enabling the use of economically acceptable furnace materials. A cost analysis of the regeneration process indicates that the process should be cost competitive with hydrogen produced from natural gas and stored as a liquid or a highly compressed gas. NOTICE This Technical Progress report was prepared with the support of the . Department of Energy DOE Award Nos. DE-FC02-97EE50483 Advanced Chemical Hydride -Based Hydrogen Generation Storage System For PEM Fuel Cell Vehicles and DE-FC36-97GO10134 Hydrogen Transmission Storage