Development of the Micro Combustor

Small heat regeneration combustors have been developed for use as heat sources by applying excess enthalpy combustion technology. Two types of combustors have been manufactured for evaluation, a disk-type combustor and a tubular one. By tuning the surface-to-volume ratio, the CO emission of the disk-type combustor could be reduced to less than 45 ppm with high energy efficiency. For the tubular combustor, which has been operated in water, high energy efficiencies and CO concentrations below 35 ppm were confirmed. The tubular combustor also proved commercial levels of combustion properties in a test apparatus ( fryer ) built for kitchens. The combustor has attracted favorable attention at various fairs and exhibition events.