Gas turbine power generation system

Proposal of a new high-efficient gas turbine power generation system utilizing waste heat from factories... 

Advanced combined cycle fuel cell-gas turbine power generation system and using clean coal gas. 

G. J. William etal, Design Optimisation of a Hybrid Solid Oxide Fuel Cell and Gas Turbine Power Generation System, Alstom Power Technology Centre, ETSU project no. F/01 /0021 /REP, 2001. 

In South Africa, the large national utility, Eskom, which has an installed generation capacity of about 38,000 MWe, is in the process of performing a technical and economic evaluation of a helium-cooled pebble bed module reactor. It would be directly coupled to a gas turbine power conversion system for consideration in increasing the capacity of the utility s electrical system. 

Figure 1 shows the fundamental structure of the proposed system. The system can be constructed ba.sed on gas turbine power generation technologies, but is different in the following point that is, the working fluid is not the air but the steam produced by utilizing waste heat energy[1]. Thus, the system has no compressor (air compressor) of... 

System Nuclear Gas Turbine Power Generation Unit ... 

The combination of the passively safe MHR and the gas turbine power conversion system represents the ultimate in simplicity and safety. The reactor coolant directly drives the turbine which turns the generator. This allows costly and failure prone steam generating equipment to be eliminated. Advantages include ... 

The GT-MHR direct Brayton cycle (gas turbine) power conversion system contains a gas turbine, an electric generator, and gas compressors located on a common, 29 m long vertically orientated shaft supported by magnetic bearings. The power conversion system also includes recuperator, pre-cooler and intercooler heat exchangers. Heated helium flows directly from the MHR into a gas turbine to drive the generator and gas compressors. Fig. XV-2. From... 

The most common use of the gas turbine power system in the oil and gas industry is in combination with an electrical system (i.e., electric generators and electric motors). In 1965 such a system was used to power a rotary rig. This was a 3,000-hp rig developed by Continental-Ensco. The rig used three 1,100-hp Solar Saturn single-shaft gas turbines. These gas turbines operated at 22,300 rpm and were connected through double reduction gear transmissions to DC generators. 

The gas turbine shown in Figure 3-7 is an open-cycle type. An open-cycle type gas turbine uses the same air that passes through the combustion process to operate the compressor. This is the type most often used for stationary power unit applications. A typical example of power requirements for an open-cycle type gas turbine would be for the unit to develop a total of 3,000 hp. However, about 2,000 hp of this would be needed to operate its compressor. This would leave 1,000 hp to operate the generator (or other systems connected to the ga.s turbine). Thus, such a gas turbine power unit would be rated as a 1,000-hp unit because this is the power that can be utilized to do external work. 

The most recent system is a 220 kilowatt fuel cell/gas turbine power plant operating at the University of California s National Fuel Cell Research Center located in Irvine, California. The first-of-a-kind hybrid power plant consists of a 200 kilowatt fuel cell generator pressurized at about 3.5 atmospheres in combination with a 20 kilowatt two-shaft gas turbine. The system was first run at the Pittsburgh facility and started operating at Irvine in June, 2000. Total run time until July, 2000 was 264 hours. Electric energy delivered was 42 megawatt-hours. Electric efficiency was 51% (LHV). An electric power feed-through mounted on the pressure vessel devel-... 

Finally, the IP-SOFC stack is an essential part of a hybrid plant, which combines this technology together with a gas turbine in order to provide a high efficiency power generation system. 

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