Chemically recuperated gas turbine

Lloyd. A. (1991), Thermodynamics of chemically recuperated gas turbines. CEE.S Report 256, Centre For Energy and Environmental. Studies, University Archives, Department of Rare Books and Special Collections, Princeton University Library. 

We consider next the cycles B of Table 8.IB and the associated Figs. 8.9-8.12 these cycles involve modification of the fuel used in the combustion process by TCR. There are two basic types of chemically recuperated gas turbine (CRGT) cycle ... 

However in practice, for the same states 1-5 the steam raised S will be less hence there is no advantage in operating a STIG plant in this variation of the basic CBTX recuperative gas turbine plant. Nonetheless, this form of analysis as developed by Lloyd will prove to be useful in the discussion of the chemical recuperation plant in Chapter 8. 

The basic idea of using TCR in a gas turbine is usually to extract more heat from the turbine exhaust gases rather than to reduce substantially the irreversibility of combustion through chemical recuperation of the fuel. One method of TCR involves an overall reaction between the fuel, say methane (CH4), and water vapour, usually produced in a heat recovery steam generator. The heat absorbed in the total process effectively increases... 

It is the aim of this paper to present a comparison of thermal and chemical recuperation options 1n a thermodynamic framework. The paper will begin by identifying the major irreversibilities in a simple gas-turbine cycle with liquid methanol fuel continue with a comparison of thermodynamic losses and overall efficiencies among various options utilizing thermal and/or... 

It is not the purpose of this paper to evaluate the suitability of methanol as a fuel for gas turbines. Consequently, no attention will be given to such factors as the cost of methanol fuel, safety considerations of exchanging heat between hot exhaust gases and fuel, and the dynamics of the complex cycle with recuperative chemical reactions. The purpose of this paper is to outline the thermodynamic Implications of chemical recuperation using methanol fuel as an example. 

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