Stack Design Considerations

This example points out one of the central problems in stack design for pollution control local, short-term effects may be the most important stack design consideration, but will usually be the aspect of the problem about which the least information is available. 

A fuel cell stack connects a multitude of cells electrically in series while the media, fuel, oxidant and coolant are frequently supplied in parallel. Electrical series coimection implies that the same electric current is passing through each individual cell thus inducing the same oxidant and fuel consumption in each cell. Fundamental stack design considerations are reviewed in [6]. 

Stack Design Considerations for Portable and Automotive Applications... 

Barbir, F., PEM Fuel Cell Stack Design Considerations, in Proc. Fuel Cell Technology Opportunities and Challenges (AlChE Spring National Meeting, New Orleans, LA, March 2002) pp. 520-530. 

For this example of acid plant design considerations, assume that a smelter has three copper converters and that the acid plant must be able to take all of the converter gas and maintain a sulfur dioxide level of less than 500 ppm in the acid plant stack gas. The maximum gas flow from... 

These three basic thermal management concepts influence the stack design in various ways. In the following, some possible designs and their influence on the operating behavior of the stack are considered. For all considerations stacks with an active area of 200 cm are used as previously defined. 

The ability to appropriately design for thermal, water and reactant flow was essential in achieving durable stack designs, as mentioned throughout this chapter. A number of design considerations can provide both performance and durabiUty improvement some examples include ... 

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