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首页> 美国政府科技报告 >Project 'Topper' A Parametric Cycle Study for the Evaluation of Externally-Fired, Open Cycle, Cogenerated Gas Turbines with a Natural Gas-Fired Topping Burner to Attain Attractive Turbine Inlet Temperatures for Superior Performance
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Project 'Topper' A Parametric Cycle Study for the Evaluation of Externally-Fired, Open Cycle, Cogenerated Gas Turbines with a Natural Gas-Fired Topping Burner to Attain Attractive Turbine Inlet Temperatures for Superior Performance

机译：项目'Topper'参数循环研究评估外部燃烧，开放循环，燃气轮机燃气轮机与天然燃气顶部燃烧器，以获得有吸引力的涡轮机入口温度，以获得卓越的性能

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摘要

Owing to excellent incremental heat rate (8000 Btu/kWh) when firing the topping burner, the ability to use abundant low-cost domestic fuels and heat sources for at least half of the engine heat input, and excellent waste heat steam production, this hybrid cycle has outstandingly good characteristics for stationary power and heat generation. It is worth noting that this hybrid cycle can offer all this with even low state-of-the-art internal engine performance (including an uncooled turbine) and only a steel heat exchanger because it has two simultaneous heat sources - the heat exchanger and the ''topper'' which is not used until power production is in the efficient high-power range, plus the cycle is cogenerated. This cycle is attractive in terms of high electrical production efficiency, excellent overall thermal efficiency and efficient substitution of abundant low-cost fuel for scarce imported high-cost fuels. The cycle presents considerable technical risk, not just because it has never been done but also because it has been tried (without the ''topper'') and the program never got the engine beyond starter cranking speeds. A success is yet to be seen. Of all the technologies required, the heat exchanger seems to be the most difficult, especially the task of keeping its size and cost down when the compressor discharge pressure is much higher than the heat source of the heat exchanger. Leakage losses are also a concern if they exist.

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