UTC Power Corporation

Figure 1.17(c). UTC Fuel Cells PC25 6 x 200 kW. (Image courtesy of UTC Power Corporation.)... 

Figure 1.9 UTC Power supplies fuel cell bus powerplants for transit programs in the United States and Europe. The fuel economy of transit buses powered by a UTC Power PureMotion fuel cell system is two times better than a diesel-powered bus. Fuel ceU-powered buses also emit no harmful tailpipe emissions and operate quietly. (Image Courtesy of UTC Power Corporation.)...

Figure 1.13 The Verizon caU routing center in Garden City, New York, is home to the largest U.S. commercial fuel cell installation of its kind. The fuel cells from UTC Power generate 200 kilowatts each, providing a total of 1.4 megawatts of clean power to the center. (Image Courtesy of UTC Power Corporation.)...

PC25 Data Sheet, UTC Power Corporation. South Windsor, CT, 2005. 

UNITED TECHNOLOGIES CORPORATION Hartford UTC POWER South Windsor... 

UNISTAR NUCLEAR ENERGY LLC UNITED TECHNOLOGIES CORPORATION USEC INC UTC POWER... 

TELEDYNE TECHNOLOGIES INCORPORATED TENNESSEE VALLEY AUTHORITY (TVA) ULTRALIFE BATTERIES UNISOURCE ENERGY CORPORATION UTC POWER... 

Other workers gradually went to less concentrated alkali (30-40% KOH) than found in Bacon s and P W s batteries. For the space shuttle program, United Technology Corporation (UTC-Power) developed a battery of alkaline fuel cells where 35% KOH immobilized in an asbestos matrix was used as the electrolyte. The electrodes contained a relatively large amount of platinum catalysts, so that at a temperature of 250°C it was possible to work at very high current densities, of up to 1 A/cm. ... 

PAFCs are the first fuel cells to be commercially available. The major manufacturers of these fuel cells are UTC Power, Toshiba Corporation, HydroGen Corporation, Fuji Electric Corporation and Mitsubishi Electric Corporation. UTC Power introduced for sale a 200 kW PAFC system in 1991, and over 260 units were delivered to various customers worldwide. The design operational lifetime for these units was 40,000 h and most of the fielded units have met or exceeded this requirement A number of these units are still operational today with fleet leader at Mohegun Sun in Uncasville, Connecticut, USA, accumulating more than 76,(X)0 h [48]. Fuji s phosphoric acid fuel cell power plants, launched in 1998 have also demonstrated 40,000 h of life in field and some units after overhaul have exceeded 77,000 h of operational lifetime [1]. 

Recently, a completely new approach to the design of HTSR furnaces was placed in pilot plant operation based on process and mechanical design developments by United Technologies Corporation (UTC). This new reformer will be part of the fuels processing system in an electric power installation designed to produce 4.8 MW for the Consolidated Edison Company in... 

The PAFC technology is considered to be the only commercial available fuel cell. The PAFC plants rely heavily on the quality of power produced from the stacks. The largest power of 11 MW has been achieved using the PAFC plant built by international fuel cells and Toshiba for Tokyo Electric Power. The major industrial developers of PAFC are Fuji Electric, Toshiba and Mitsubishi Electric Company (Japan) and UTC fuel cells (ONSI Corporation, United States). Mitsubishi Electric Company has demonstrated cell performance of 0.65 mV at 300 mA/cm. In 1991, Tokyo Electric Company demonstrated cell performance of 0.71 V at 431 mA/cm. Bharat Heavy Electrical Ltd. of India and Caltex Oil Corporation of South Korea are new entrants for the PAFC technology. 

A ribbed structure substrate was made by United Technologies Corporation (UTC). Pitch based carbon fibre about 0.12-0.25 mm long was blended with phenolic resin powder and laid on a steel belt for curing in a belt press. This was subsequently graphitized. This thick ribbed substrate (around 2-3 mm) was successfully used in UTCs 40 kw PC-18 power plants. The main purpose for such high thickness was to hold sufficient phosphoric acid and to have the flow fields (the ribbed structure) embedded on the substrate itself. Thus, costly high density graphite plates that were otherwise required for flow field and separator plate can be reduced in thickness for cost efficacy. 

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