Advanced Application of Excess Enthalpy Combustion Technology to Boiler Systems

Update item information
Title Advanced Application of Excess Enthalpy Combustion Technology to Boiler Systems
Creator Mochida, Susumu; Hasegawa, Toshiaki; Tanaka, Ryoichi
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1993
Spatial Coverage presented at Tulsa, Oklahoma
Abstract Excess enthalpy combustion causes flame temperature to rise, with any BTU fuel. The method uses high temperature air for combustion which is obtained from a heat-recirculation method. A practical method of excess enthalpy combustion, called High cycle Regenerative combustion System(HRS), was applied to a small water tube boiler having a steam production rate of 700 kg/h. The results of field tests provided a thermal efficiency of 97% and NOx emission levels of approximately 100 ppm, corrected for 0% O2 using natural gas as the fuel. These results were with an air inlet temperature of 900 °C using enthalpy extraction from the flue gases and modified fuel-staged combustion technique. The application of excess enthalpy flame to a conventional boiler system demonstrated an overall increase in the time averaged value of heat flux in the radiative section of the boiler. Furthermore, the results also showed that it was possible to increase the amount of heat transfer by passing part of flue gases to the convective section of the chamber. Thus, the advantage of the whole system was not only an increase in boiler efficiency, but also the improved heat transfer efficiency. The HRS boiler systems provide significant compactness. Further advantages include significant reduction in the energy usage and boiler heating-up time. The HRS can be applied to almost all types of practical power systems and in all cases significant energy savings, system cost and pollutants emission reduction occurs
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician Cliodhna Davis
Metadata Cataloger Kendra Yates
ARK ark:/87278/s65b053x
Setname uu_afrc
Date Created 2012-05-07
Date Modified 2012-09-05
ID 8622
Reference URL