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中文摘要：
提出了一种新颖的甲醇燃料燃气轮机循环，以甲醇裂解反应吸收压气机出口空气的低温热，使其转化为高品位化学能；同时得到预冷的空气参与回热，以提高透平排气余热回收效果。该循环与普通化学回热燃气轮机循环相比，利用低温高压空气作为热源代替高温燃气轮机排气来分解甲醇，系统内能量品位匹配更加合理；与常规回热相比，高压空气被燃料冷却后降低了温度，有利于高温燃气余热的回收。文中对该循环进行了计算，并以常规回热循环为参照，详细研究了其性能。计算结果表明，该循环具有效率高（τ=5．5时，ηmax=57．9％），效率最佳压比与比功最佳压比较为接近等优点。此外，该循环还具有装置较简单等工程上的优点。
英文摘要：
A new methanol fuel gas turbine cycle has been proposed in this paper. The low - temperature thermal energy of high pressure air exiting the compressor is absorbed by the endothermic decomposing process of methanol and is upgraded to the chemical energy of fuel. After that, the cooled air is sent into the recuperator to be preheated. Compared with the normal chemical recuperative cycle, the energy level in the new cycle is better matched. Compared with the normal recuperative cycle, the waste heat of the exhaust gas in the new cycle is better recovered. The thermodynamic performance of the proposed cycle has been studied detailedly. The results demonstrate that it has higher efficiency （when τ = 5.5, ηmax = 57.9%） than the recuperative cycle. And its optimum pressure ratio for efficiency is close to its optimum pressure ratio for specific power. In addition, the configuration of the proposed cycle is also rather simple.
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