Siemens Power Generation

V. Carl, E. Becker, A. Sperling - Siemens Power Generation Group, Germany. 

Figure 1-9. Frame-type gas turbine with siio type eombustors. (Courtesy Siemens Power Generation.)...

FIGURE 6.5 Tubular cathode-supported solid oxide fuel cell developed by Siemens Power Generation [48]. Reprinted from [48] with permission from Elsevier. 

Siemens Power Generation is a partner with ConocoPhillips and Air Products and Chemicals, Inc., (APCI) to develop large-scale fuel cell systems based upon their gas turbine and SECA SOFC technologies. The design will use an ion transport membrane (ITM) oxygen air separation unit (ASU) from APCI with improved system efficiency. 

Thus far, tubular design cells are the most reliable cells against thermal stresses and chemical degradation of the performance. Siemens Power Generation has demonstrated the performance and reliability of SOFC systems with tubular cells [6], The 100 kW CHP system has been operated for more than 20000 h, and it was reported that no degradation of the system was observed. To prove the feasibility of a GT/SOFC hybrid system, a 220-kW hybrid system with an SOFC generator integrated with a micro gas turbine has been demonstrated at the University of California this system has shown a conversion efficiency of around 49% (HHV). 

Siemens (2006). Siemens Power Generation Demonstrations. Siemens. Available at http / / www.powergeneration.siemens.com. 

The tubular design is probably the best-known design. It has been developed by Westinghouse (now Siemens Power generation) [8]. The first concept that was pursued by Westinghouse consisted of an air electrode supported fuel cell tube. In earlier days the tubes were made from calcium-stabilized zirconia on which the active cell components were sprayed. Nowadays this porous supported tube (PST) is replaced by a doped lanthanum manganite (LaMn) air electrode tube (AES) that increases the power density by about 35 %. The LaMn tubes are extruded and sintered and serve as the air electrode. The other cell components are deposited on this construction by plasma spraying. 

Siemens Power Generation Fuei Ceiis." http //www.powergeneration.siemens.com/en/fueiceiis/index.cfm UTC Press Reiease. http //www.utcfueiceiis.com/news/archive/2001-12-19.shtm... 

The CHP-100 kWe SOFC Field Unit (Siemens Power Generation-Stationary Fuel Cells) is the first to utilize the commercial prototype air electrode supported cells (22 mm diameter, 150... 

The Chapter dealt with the description of the experimental analysis of the CHP-100 SOFC Field Unit built by Siemens Power Generation Stationary Fuel Cells (SPG-SFC). 

Figure 1.11 Siemens 100 kW tubular solid oxide fuel ceU and cogeneration system. The system has a f)eak power of 140 kW, typically feeding 109 kW into the local grid and 64 kW of hot water into the local district heating system, at an electrical efficiency of 46% [6]. (Image courtesy Siemens Power Generation.)...

N. F. Bessette, Siemens SOFC Technology on the Way to Economic Competitiveness, Power Journal (Siemens Power Generation Group), January 2001 (http //www,pg.siemens,de/download). 

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