Abstract
The heat transfer performance of a tri-sector rotary air pre-heater was comprehensively investigated considering the influences of coal quality, flue gas flow rate, ambient temperature and load variation. By applying the standard of ASME PTC 4.3 with actual characteristics of the tri-sector rotary air preheater, an applicable index evaluation system for the tri-sector rotary air preheater was established. Combining the energy conservation principle and the parameters matching relationship of thermal systems, test methods of the corresponding key parameters were introduced. Finally, a typical application of the index evaluation system in the analysis and evaluation of the thermal performance and heat transfer effect of a retrofitted tri-sector rotary air preheater for a 300 MW unit was introduced.
