Abstract
In order to make efficient use of energy resources, optimum design and development of new combustors are extremely important. In particular, emission and energy efficiencies are becoming very important considerations. A heating system incorporating a newly developed combustor was used to supply warm air and moisture to the control atmosphere in a greenhouse. We developed a high-performance combustor (80-kw type) which makes use of fuel-air counter flow. We confirmed experimentally that the combustor provided an 17% reduction in fuel cost, as compared to the current fuel-air conical supply combustor. NO_x composition measured in the flue gas was as small as 6ppm. The counter airflow nozzle design method is discussed herein.
