Authors: Juan Yin Ming Li Junqiang Zhu
Publish Date: 2013/03/28
Volume: 22, Issue: 2, Pages: 159-167
Abstract
The purpose of this study is to compare the partload performance of a lean burn catalytic combustion gas turbine LBCCGT system in three different control modes varying fuel bleeding off the fuel mixture flow after the compressor and varying rotational speed The conversions of methane species for chemical process are considered A 1D heterogeneous plug flow model was utilized to analyze the system performance The actual turbomachinery components were designed and predicted performance maps were applied to system performance research The partload characteristics under three control strategies were numerically investigated The main results show that the combustor inlet temperature is a significant factor that can significantly affect the partload characteristics of the LBCCGT system the rotational speed control mode can provide the best performance characteristics for partload operations the operation range of the bleed off mode is narrower than that of the speed control mode and wider than that of the fuel only mode with reduced power methane does not achieve full conversion over the reactor at the fuel only control mode which will not warrant stable operation of the turbine system the thermal efficiency of the LBCCGT system at fuel only control strategy is higher than that at bleed off control strategy within the operation range
Keywords: