It was discovered that collection efficiency of type II solar air heater increases with increasing air flow rate, and with decreasing temperature of inlet air and intensity of incident solar radiation.
The damper configuration on inlet air duct to coal mills in pressurized direct pulverizing coal systems is analyzed and the optimized design schemes are presented.
The system uses a vent fan, a manually adjustable backpressure damper, a differential pressure-sensing gage, and an inlet air filter high differential pressure alarm switch.
