Gas turbines fuel cells

Research into hybrid gas turbine-fuel cell systems holds promise of increasing efficiency beyond 60% (LHV) while retaining extremely low emissions. 

Technology Recip Engine Diesel Recip Engine NG Microturbine Combustion Gas Turbine Fuel Cell... 

Biogas can be used after appropriate gas cleanup as a fuel for engines, gas turbines, fuel cells, boilers, industrial heaters, other processes, or for the manufacturing of chemicals. Before landfilling, treatment or stabihzation of biodegradable materials can be accomplished by a combination of anaerobic digestion followed by aerobic composting. 

Stationary off-grid applications such as gas turbine, fuel cell power plant, or internal combustion engines operated in the CHP mode are appropriate for decentralized energy provision. In particular high temperature fuel cells are applicable in households because of their need for both electricity and heat. 

Kurz, R. (2005) Parameter optimization on combined gas turbine-fuel cell power plants. J. Fud Cell Sci. Technol., 2, 268 273. 

Technology Comparison Diesel Engine Gas Engine Simple Cycle Gas Turbine Micro Turbine Fuel Cell Solar Energy Photovoltic Cell Wind Bio Mass River Hydro... 

Natural gas also has an efficiency advantage in electricity generation. The economic and operational superiority of gas-fired combustion turbines and combined-cycle machines (and prospectively, the superiority of gas-powered fuel cells) relative to coal-and nuclear-powered steam turbines made the combination of natural gas and natural gas turbines the supply favorite of most electric utilities in the 1990s. 

The combined cycle is designed to gain maximum efficiency from the primary heat source. In most cases, both cycles are used for the same purpose—usually to generate electricity. The major combined-cycle options currently under development include open-cycle gas turbines, closed-cycle turbines, fuel cells, and magnetohydrodynamics with vapor cycles. Other combined cycles include the Diesel/Rankine cycle (Boretz, J.E.,... 

Solasys - an R D project to (1) Demonstrate the process of steam reforming of methane with the aid of solar energy to produce hydrogen-rich synthesis gas as a gas turbine fuel. (2) Explore the possibility of solar reformer interface with fuel cells. 

Gas Diesel Micro- Hydrogen electric electric turbine fuel cell... 

Since this evaluation is only demonstration of the method and procedure, it would be inappropriate to make any finale conclusion of the potential selection of the hydrogen system as it was demonstrated in this evolution. But, still it can be concluded that under circumstances demonstrated in this evaluation coal and natural gas with fuel cell systems are presently the most attractive potential systems to be selected among the options under consideration. Also, natural gas and nuclear systems with fuel cell and gas turbine options are potentially acceptable solution for the situation where it can be in accordance with respective local condition. It should be emphasized that the utilization options are not substantially affecting priority of the options under consideration. 

Power generation Natural gas 1 203 ++ — + Availability of H2 combustion turbines/fuel cell costs... 

Oak Ridge National Laboratory (ORNL) has developed a carbon fiber composite molecular sieve designed specifically to absorb CO2 emitted from coal fired power plants and gas turbines. Petroleum pitch based chopped fiber is bonded with a phenolic resin and activated in steam, O2, or CO2 at 850°C, to form a product with a large surface area and pore volume with mesopores of 2 50 nm, capable of absorbing CO2. There are also macropores (50 100 pm) which allow sufficient fluid flow with low pressure drop. It also has potential to be used for removal of CO2 from natural gas for fuel cells. [25]. 

H. W. Venderbosch, Survey Desulphurisation of Natural Gas for Fuel Cell Systems (inDutch),KEMA-reportno. 34051-FPP 95-4612,1996. Pressurized Solid Oxide Fuel Cell/Gas Turbine Power System, Final Report DE-AC26-98FT40355 by Siemens Westinghouse Power Company for the US Department of Energy, February 2000. 

Cooling Fuel Cells Industry and Business, Energy as a Factor of Production in Turbines, Gas Turbines, Steam. 

Several of the gas turbine cycle options discussed m this section (intercooling, recuperation, and reheat) are illustrated in Figure 4. These cycle options can be applied singly or in various combinations with other cycles to improve thermal efficiency. Other possible cycle concepts that are discussed include thermochemical recuperation, partial oxidation, use of a humid air turbine, and use of fuel cells. 

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