抄録
A pre-combustion CCS system burns hydrogen or hydrogen rich gas in the combustor. Combustion simulation can give useful knowledge to design combustor. Fundamental experiments are necessary to provide data for a hydrogen combustion model expressing instabilities. This is essential because most flame instabilities are triggered by flow rate oscillations. a photomultiplier tube (PMT) with a filter of 308 nm is employed to observe the acoustic effects on the light emission from the OH radicals in the flame. Also, a Constant Temperature Anemometer (CTA) is employed to measure the flow rate oscillations. An apparatus consisting of a burner and a mixing chamber has been constrycted for this experiment. A speaker inside the mixing chamber is controlled by a fonction generator, which controls its frequency and amplitude. As the speaker frequency increases with a reasonably constant deviation of the CTA, the deviation of the PMT voltage decreases.
