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中文摘要：
应用复杂循环是进一步提高燃气轮机效率的重要途径。遵循此原则，研究了采用回注蒸汽措施对回热型微燃机性能的影响，并结合具体算例进行了计算分析。研究结果表明，回热循环与回注蒸汽循环可以互补，匹配关系良好，通过回注蒸汽可使回热型微燃机的效率与比功均得到显著提高。同时揭示了回热与回注蒸汽两者整合优化的基本规律：在回热度一定时，发电效率随着回注比增大而增大，在某点效率达到最大值，超过此点时，效率开始下降；在回热度不同时，回热度越高回注蒸汽后可达到的最高效率值越大。
英文摘要：
It is an important way to improve the efficiency of gas turbine by applying the compound cycle. Based on this idea, the effects of steam injecting on performance of a regenerative micro gas turbine were studied with a case. Results show that the regenerative cycle and the steam injected cycle can effectively complement and match each other. Both the efficiency and the specific work of micro gas turbine can be improved remarkably. Some optimization rules integrating the two kinds of cycles were revealed as follows： When recuperator effectiveness is constant, the efficiency of micro gas turbine will increase with the increase of steam injected ratio and it will reach to a maximum at a certain steam injected ratio beyond which the efficiency of micro gas turbine will decrease; When recuperator effectiveness varies, the higher the recuperator effectiveness is, the higher the efficiency of micro gas turbine with steam injection is.
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