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湿空气透平循环是新型动力循环的重要发展方向之一。基于某微型燃气轮机,构建微型湿空气透平(humid airturbine,HAT)循环原型实验系统,研究了满负荷和部分负荷下HAT循环的热力性能和NOx排放性能,分析后冷器对循环性能的影响。结果表明,相比回热循环微燃机,满负荷时微型HAT循环发电功率提高约23%,发电效率提高约18%,且随负荷降低,发电效率的相对增加值提高;各负荷下微型HAT循环NOx排放降低30%以上。同时实验还证实对于微型HAT循环,有、无后冷器时循环热力性能相当。
Wet air turbine cycle is one of the important development directions of the new power cycle. Based on a micro-gas turbine, a micro-humid airturbine (HAT) cycle prototype system was constructed to study the thermal performance and NOx emission performance of HAT cycle under full load and partial load, and the influence of aftercooler on cycle performance was analyzed. The results show that the power generation efficiency of micro HAT cycle increases by about 23% and the power generation efficiency by about 18% at full load compared with regenerative micro-cycle engines, and the relative increase of power generation efficiency increases with the decrease of load. The micro HAT Cycle NOx emissions reduced by more than 30%. At the same time experiments also confirmed that for the micro-HAT cycle, there is, no aftercooler cycle thermal performance quite.