Fuel processing systems stationary

One of these will be operated on diesel in the year 2000 for a fuel cell client. The catalyst in this ATR unit is capable of operation with the sulfur in diesel (under 200 ppmw sulfur in the liquid phase). Based on this ATR technology, HBT developed a <10 kWe fuel processing system directed at the stationary market. The first group of twenty pre-production units is being built for evaluation by fuel cell developers during late 2000 and early 2001. 

An integrated fuel processing system for different fuels for mobile and small-scale stationary power units up to a range of 5 kWe was developed by the IMM [44]. A complete fuel processor for 5 kW (Figure 23.5) was set up for use of isooctane as fuel. 

PAFC systems are commercially available from UTC Power as 200-kW stationary power sources operating on natural gas. The stack cross section is 1 m (10.8 ft ). It is about 2.5 m (8.2 ft) tall and rated for a 40,000-h life. It is cooled with water/steam in a closed loop with secondary heat exchangers. Fuel processing is similar to that in a PEFC system, but a preferential oxidizer is not needed. These systems are intended for on-site power and heat generation for hospitals, hotels, and small businesses. 

In the works devoted to study and development of MEISs numerous examples on their application to the analysis of various problems were certainly presented. They are formation of harmful substances during fuel combustion and cleaning of combustion products from these components, fuel processing, atmospheric pollution with anthropogenic emissions, stationary and nonstationary flow distribution in hydraulic systems, etc. These examples should illustrate practical efficiency of MEISs, their capabilities for revealing specific features of the modeled process and determining directions of its improvement. 

In collaboration with another ongoing DOE project, Fuel Processing Based on ACR for Stationary PEM Fuel Cells (contract No. DE-FC02-97EE50488), the component design of a fuel processor has been completed and the system is being fabricated. The fabrication is expected to be complete by July 2002. 

A very much abbreviated and simple example of one of the first steps in the process of developing fuel cell system specihcations is shown in Fig. 14.3. This example is for a residential stationary fuel cell application, but similar requirements are relevant in most other fuel cell applications. Here is shown the high-level VOC, gathered by some technique such as the use of customer interviews or focus groups and the system attributes that will influence their achievement, arranged in order of importance. As shown, some of the key system attributes that are critical to quality (CTQs) and that influence the customer s demand for clean, quiet, safe, and... 

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