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Contenido archivado el 2024-04-19

Systematic analysis of gas turbine - fuel cell combinations generation with very high efficiency

Objetivo

Fuel Cells, as electrochemical electricity generators, are in competition with conventional electricity generators such as gas turbines. However, fuel cells can also be combined with gas turbines to generate electricity.
In this project, a systematic analysis of gas turbine/fuel cell combinations for the electric power generation at very high efficiency will be carried-out. The deliverables are economic analyses, all based on the same assumptions, which will enable objective comparison of system economics.
A design matrix was developed containing the gas turbine (+reformer)-fuel cell combinations which the parties involved were planning to analyse as well as a manageable coding system for those designs. Simulations started by modelling of the three standard gas turbine cycles. These models formed the starting point for gas turbine-reformer combinations. In a reformer a mixture of steam and methane is converted into a hydrogen rich gas which is the primary fuel for fuel cells which were to be incorporated later on. For each cycle, the most interesting reformer positions were worked out after which for each gas turbine only one most interesting gas turbine-reformer combination was selected in order to limit the total number of models. These three gas turbine-reformer combinations were then successively analysed for possible expansion with one of the five fuel cell types. Heat exchanger networks of the resulting designs were designed using 'pinch technology'. This technique systematically matches streams that need to be cooled and those that require heating up in order to recover as much process heat as is economically justified before external utilities are used.

After all the modelling a detailed economic analysis has been conducted in an attempt to assess the economic feasibility and future commercial prospects of the proposed combination systems.
The type of fuel cells considered in this project are alkaline fuel cells, solid polymer fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells and solid oxide fuel cells. The gas turbines considered will differ in power output (1.5-10 MW) and in application, e.g.
industrial & aero-derivative turbines The input of fuel cell parameters and the input of gas turbine parameters result in a common basis of design, with the collaboration of all partners. Software adaptations are made for each type of fuel cell. The different types of fuel cells are "integrated" with each gas turbine considered, and are optimized for different possible configurations using Pinch technology.

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Coordinador

Blomenco BV
Aportación de la UE
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Dirección
31,Achtermonde
4156 AD Rumpt
Países Bajos

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Participantes (3)

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