Assembly, test fixture design and performance characterization of a silicon-based micro combustor

This paper is a continued report of our previous publication design and fabrication of a silicon-based micro combustor for micro gas turbine engine. This paper presents the assembly, test fixture design and performance characterization of the micro combustor, which consists of seven layers of silicon wafers. The combustor was easily ignited and a stable, continuous combustion was sustained using hydrogen as its fuel. K-type thermocouples were selected to measure the temperature distribution at exit and wall temperature of combustion chamber as well. The exit temperature reached as high as 1700 K at a selected equivalence ratio and flow rate of hydrogen-air mixture, and the residual hydrogen in the exhausted gas was extremely low.EI0279-84