微型分轴燃气轮机HAT循环性能的机理试验研究

Experimental Study of the Mechanism Governing the HAT(Humid Air Turbine)Cycle Performance of a Split-shaft Micro Gas Turbine

基于微型分轴燃气轮机,通过加入饱和器,构成了微型分轴燃气轮机HAT循环性能的试验装置,并开展了HAT循环性能的机理性试验。试验结果表明,空气加湿后对循环性能有明显影响,循环比功及效率相对简单循环都有很大的提高,当加湿量达到最大的4.2%时,循环输出功率增加了16%。根据试验条件进行的模拟计算结果与试验结果能很好地吻合。在此基础上,对带有回热器的试验系统进行了模拟计算,结果显示在不改变燃气初温的情况下,由于回热器的加入使系统压力损失加大,装置比功将减少3%～10%左右;但同时耗油率下降20%～45%,效率增加了30%～80%,此时系统的性能得到了显著的提高。

Based on a split shaft micro gas turbine and through a saturator additionally installed,constituted was the HAT cycle performance test rig of the turbine.On this basis,tests of the mechanism governing the HAT cycle performance were carried out.The test results show that after the air is humidified,it has a conspicuous influence on the cycle performance and both specific power and efficiency of the cycle have a very big enhancement when compared with that of the simple cycle.When the humidification quantity reaches its maximum of 4.2%,the output power of the cycle will increase by 16%.The simulation results under the test conditions are in very good agreement with the test ones.On this basis,a simulation calculation was performed of the test system with a recuperator.The calculation results show that under the condition that the initial gas temperature is kept unchanged,the incorporation of the recuperator will result in an increase of the pressure loss of the system and the specific power of the device will decrease by about 3%-10%,however,in the meantime,the oil consumption rate will lower by 20%-45% and the efficiency will go up by 30%-80%.In such a case,the performance of the system is markedly enhanced.