I don't need stem heater because.
1.We have LP steam( LP steam = Steam after Turbine ) temperature at 150 C ่. When LP stem heat up to heater machine can make temperature to 120 C ่
2.Heater machine have a fin tube type. Fin it a block air flow to rotary drum dryer.
3.We have hot air temperature 230 C ่. Flow rate 120,000 m3/hr.