Power plants co-generation

Gunnarsson, A., Steingrimsson, B. S., Gunnlaugsson, E., Magnusson, J. Maack, R. 1992. Nesjavellir co-generation power plant. Geothermics, 21, 559-583. 

Table I. Basic Cost and Performance Data of a 10,000 kW, 50 psia Back Pressure Co-generating Power Plant.

Costing on the Basis of Available Energy This same procedure will now be followed, but with available energy to evaluate the power flows for the case in which the co-generating power plant exhausts 50 psia steam. For steam produced at 650 psia and superheated to 750°F, the available energy per pound is (in this work,... 

The cost of process steam is then obtained from a money balance on the turbine. Nevertheless, the commodity of value is available energy—any method which assigns costs on any other basis such as energy or mass is usually invalid. Furthermore, only with available-energy costing can co-generating power plants be analyzed by other methods—equality, extraction, by-product steam— discussed in the preceding paper (2). 

Key words Fuel Cell/Reforming/Coal/Steam Gasification/Fluidized Bed/Hyhrid Co-Generation Power Plant/Fuel Cell Test Installation... 

The fields of fuel cells application are co-generation power plants with electric capacity from 1 kW to 11 MW, fuel cell vehicles with electric capacity Irom 20 kW to 250 kW, small portable power generators with... 

After the analysis of PCFB-1.0 plant design documentation, the circuit of new hybrid co-generation power plant with use of PCFB gasifier, solid oxide fuel cells, and gas turbine power plant with built-in air recuperator was proposed (see Fig. 7). Thermal capacity of power plant will be 1.14 MW at gasifier operation under pressure of 0.35 MPa and Ukrainian bituminous coal consumption of 222.6 kg/h. Electric capacity of solid oxide fuel cell module will be 375 kW and of electric capacity of high-speed gas turbine plant will be 125 kW. 

High temperature oxide fuel cells (SOFCs) are the most efficient devices for the conversion of chemical energy from hydrocarbon fuels into electricity. Recent years have witnessed an upsurge of interest in them for use in clean distributed generation systems. A stark demonstration of the technical feasibility and reliability of tubular SOFCs came through the very successful, 2-year long operation of a co-generation power plant with installed capacity of 100 kW without a performance penalty. 

There is now a great interest in developing different kinds of fuel cells with several applications (in addition to the first and most developed application in space programs) depending on their nominal power stationary electric power plants (lOOkW-lOMW), power train sources (20-200kW) for the electrical vehicle (bus, truck and individual car), electricity and heat co-generation for buildings and houses (5-20 kW), auxiliary power units (1-100 kW) for different uses (automobiles, aircraft, space launchers, space stations, uninterruptible power supply, remote power, etc.) and portable electronic devices (1-100 W), for example, cell phones, computers, camcorders [2, 3]. 

In flue gases MISiC sensors can be used to either monitor the gas components, such as CO, nitric oxide (NO), and oxygen, or identify different modes of combustion in the boilers of small power plants. In this way, it is possible to optimize the combustion in boilers of about 0.5-5 MW in which optical techniques such as Fourier transform infrared (FTIR) are too expensive and complex. The authors have performed measurements in a 100-MW boiler, which has been used to heat houses and industries and generate electricity in Nykoping, Sweden, and in which there was a natural randomization of the flue gases [59]. Data was collected over several... 

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