Fig. 14-62 Schematic of MCFC Chemical Processes. Source: GRI

Fig. 14-63 Field Installation of 250 kW MCFC Demonstration Project. Source: Stewart and Stevenson
Fig. 14-64 Cutaway Illustration of Design Concept for Larger Capacity MCFC Module. Source: Stewart and Stevenson

trolytes. Cells are being developed in two geometric configurations: tubular and planar. The ceramic materials permit operation at approximately 1,800°F (980°C), at which temperature cells are capable of in-situ reforming of methane to hydrogen-rich gas directly without catalytic fuel processing. Long-term expectations of thermal efficiency range as high as 60%.

Commercialization of tubular SOFC generating equipment is currently under way. Planar SOFC, which is expected to provide higher power density, is considered to be a longer-term prospect. Figure 14-65 illustrates an SOFC fuel cell of tubular geometry. Figure 14-66 illustrates the operating principle of the SOFC fuel cell.

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Guide to Alternative Fuels

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