Dynamic Characteristics of the Reciprocal Porous Media Combustion System with Heat Recirculation

Experiments were conducted to investigate dynamic characteristic of a novel reciprocal porous media combustion system with heat recirculation. Dynamic temperatures in different position of system and distribution in periods were analyzed in details, in addition to dynamic emissions. The results showed that temperatures in different position of system vary periodically while the system operated steadily and periodically. Phase difference of temperature dynamic variation is just right 180 degree between two sides of system. Temperature distribution has two temperature peak zones liking an "M"; Maximum temperature fluctuation appears in combustion zones of both sides, more near to combustion zone, higher fluctuation is. It also increases with the half period increasing. Combustion emissions are low, and vary periodically as the system operated steadily and periodically. A fluctuation of emissions lies during the switching, especially for the CO and NOx.