Tokyo Electric Power

Sadao Mori, Takashi Isozaki, NaS Tattery Development activities Ty TEPCO and NGK Insulators, Tokyo Electric Power Co., Inc., and NGK Insulators Ltd., Japan, Sept. 27, 1993. As presented at the 4th Annual Conference— Batteries Por Energy Storage, Berlin, Germany. 

The 1,356 MWe Advanced Boiling Water Reactor was jointly developed by General Electric, Hitachi, and Toshiba and BWR suppliers based on world experience with the previous BWRs. Tokyo Electric Power operates two ABWRs as units 6 and 7 of the Kashiwazaki-Kariwa Nuclear Power Station. Features of the ABWR are (Wilkins, 19921 ... 

A conceptual design of an improved technology stack operating at 120 psi (8.2 atm) and 405°F (207°C) was produced based on cell and stack development and tests. The stack was designed for 355 10 ft (approximately 1 m ) cells to produce over 1 MW dc power in the same physical envelope as the 670 kW stack used in the 11 MW PAFC plant built for Tokyo Electric Power. The improvements made to the design were tested in single cells, and in subscale and full size short stacks. 

Overview of 11 MW Fuel Cell Power Plant," Non-published information from Tokyo Electric Power Company, September 1989. 

IFC has been marketing the PC25, a 200 kW atmospheric PAFC unit, since 1992. Details of this commercial cycle are proprietary and not available for publication. In order to discuss an example PAFC cycle, a pressurized (8 atm) 12 MW system will be presented (50). This cycle is very similar to the 11 MW IFC PAFC cycle that went into operation in 1991 in the Tokyo Electric Power Company system at the Goi Thermal Station, except that two performance enhancements have been incorporated. Limited data are available regarding the Goi power plant. However, it is understood that the average cell voltage is 750 mV and the fuel utilization is 80% (51). The enhanced 12 MW cycle presented here utilizes values of 760 mV and 86%. This enhanced cycle (Figure 9-8) is discussed below with selected gas compositions presented in Table 9-6. 

Thomas L. Buchanan, John H. Hirschenhofer, David B. Stauffer, and Jay S. White, "Carbon Dioxide Capture in Fuel Cell Power Systems," September 1994, G/C Report 2981. "Overview of 11 MW Fuel Cell Power Plant," Non-published information from Tokyo Electric Power Company, September 1989. 

A process flow schematic of the demonstration unit1 installed at the Tokyo Electric Power facility at Goi. Japan and in operation since 1983 is shown in Fig. 4, Fuel cell generalors have three unique major subsystems that are unfamiliar to electric utilities (1) A fuel processing subsystem, (2) a fuel cell power section, and (3) a power conditioning subsystem. Sec Fig. 5. 

Fig, 4, Process flow diagram of 4.5 MW fuel cell power demonstration plant installed at the Tokyo Electric Power Company, Goi, Japan... 

To date, large-scale applications of fuel cells have been limited because of cost, although the Tokyo Electric Power Company in Japan is now operating an... 

Tokyo Electric Power Fukushima Daiichi 1 (Ohkuma, 39 BWR... 

Energy and Environment R D Center, Tokyo Electric Power Co.,... 

Hiroshima R D Center, Mitsubishi Heavy Industries, Ltd., Nishi-ku, Hiroshima 733, Japan Energy and Environment R D Center, Tokyo Electric Power Co., Tsurumi-ku, Yokohama 230, Japan... 

Tokyo Electric Power Company, Inc. (Principal Investigator K. Shibata), Demonstration Testing of 11 MW Phosphoric Acid Fuel Cell Power Plant—from Planning to Power Generation. Interim Report for Electric Power Research Institute, Palo Alto, 1992. 

In this region, the CER report activity is dominated by Japan, where the 1997 UNEP survey found over 30 CERs, compared with three a few years earlier, but less than half of them were available in English. Examples of CER producers are Tokyo Electric Power and Sony. 

Toshiba, in collaboration with Tokyo Electric Power Company, has developed a hybrid catalytic combustion. Here only a part of the fuel is converted heterogeneously on the catalyst. The system consists of a pre-combustion mixing zone, a low-temperature catalyst zone, and a gas-phase combustion zone. The fuel-air mixture is controlled to maintain the temperature of the catalyst below 800 C, because the catalyst is not stable above the temperature. More fuel is added downstream to attain the final combustion temperature. The function of the catalyst is to be a source of additional "pre-heat" to support the lean, homogeneous down-stream combustion. 

Comparison of energy density (kWh/m ) for various storage systems of electric power such as pumped hydropower, redox-flow battery, lead battery, NAS battery and methylcyclohexane (MCH) and decalin (TEPCO = Tokyo Electric Power Company). 

Tokyo Electric Power Company, 1-3 Uchisaiwai-cho 1-chome Chiyoda-ku Tokyo 100-0011 Japan Tel +81 3 3501 8111, Fax +81 3 35968562, e-mail Makino.S tepco.co.jp... 

AMAKINO Shigenori Tokyo Electric Power Company 1-3 Uchisaiwai-cho 1-chome Chiyoda-ku Tokyo 100-0011... 

As mentioned earlier, the first LWR in Japan was the JAERIJPDR which started operating in 1963. The reactor is of the plate construction type and the material was SA302B modified. The first commercial nuclear power plant was JAPCO s Tokai 1 which went into operation in 1966. The RPV was the Calder HaU-type made of JIS SB46 modified (Coltuf 26 equivalent) plate steel. After that, JAPCO constructed the Tsuruga 1 BWR plant in 1965. The Tokyo Electric Power Company (TEPCO) and Kansai Electric Power Company (KEPCO) also decided to construct the Fukushima 1... 

The CO2 capture system is composed of a compressor, a chiller and a gas-liquid separation unit. In the industrial CO2 liquefaction process, CO2 gas is compressed up to 3 MPa and cooled down to -25"C. In this study, it was designed that the off-gas from the MRF should be compressed to 7.0 MPa and cooled to room temperature to liquefy and separate CO2 in the gas-liquid separation unit. The concentration of CO2 in the off-gas was 65% and the off-gas flow rate was 16.4 Nm /h at the rated hydrogen production of 40 Nm /h. The total amount of liquefied CO2 capture was estimated as 21 kg/h and the CO2 reduction rate was calculated to be 55%. The CO2 emissions per unit of natural gas of 2.36 kg-C02/Nm (Tokyo Gas website) and electric power consumption of 0.332 kg-C02/ kWh based on Tokyo electric power generation mix in 2008 (TEPCO website) were used in this study. 

Kamibayashi, M. (2001) Advanced Sodium-Sulfur Battery Systems. Tokyo Electric Power Company (TEPCO), Japan. 

A fire occurred with a Na-S battery made by Tepco (Tokyo Electric Power Company) on 21 September 2011, leading NGK to request the provisional shutdown of all Na-S batteries. 

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