Abstract
Experiments have been conducted to develop the high efficiency combustion technique to realize the high energy saving and low emission of CO_2 by utilization of electro-magnetic wave around 1200 cm^<-1> in wave number, which belongs to far infrared ray. It is well known that the hydrocarbon fuels such as methane and its precursor are able to absorb much electro-magnetic radiant energy near the wave number of 1200 cm^<-1>. These rays may lead to more accelerate enhance the molecular movements between molecules of fuel and oxygen, and consequently the flame temperature increases due to the acceleration of combustion reaction. The main results obtained for the study are as follows: (1) the average flame temperature rise obtained from co-axial diffusion flame of methane are approximately 80 ℃, (2) the effect of such electro-magnetic wave on flame temperature rise of fuel spray combustion is very effective as well as that of co-axial diffusion flame, and (3) the energy saving rate corresponding to reduction of CO_2 emission even at the demonstration test of boilers can be attainable in the range of 3% to 5%.
