The Experimental Investigation of Pollutants of NOX and CO in a Non-Premixed Pulse Combustor

Pulse combustors are simplest form of combustor with low cost and operating with different fuels. In this research a non-premixed pulse combustor is constructed and some factors affecting the NOX, CO, flame temperature and frequency of combustion are experimentally investigated. The key variables of the experiments are the inlet mass flow rate of fuel and the tailpipe length. The results show that with decreasing the mass flow rate of fuel, the concentrations of NOX and CO are reduced and reached to its minimum values of 17 and 65 ppm, respectively. This level of NOX emission from pulse combustors is quoted to be generally lower than from conventional burners which reported to be 58-138 ppm. Increasing the tailpipe length causes the concentrations of NOX and CO to be decreased and the frequency of combustion is also decreased. The results are compared with the results of other researchers and are in good agreement.