METI / ECCJ / ACE Training Program MTPEC04 (2006.02)

Heat & Material Balance
(Sanky Diagram)

Analysis & Improvement Plan

Thermal efficiency of dryer excluding hot gas furnace,

= (heat for vaporization + sensible heat for material) / (heat input from hot gas)
= (qw+q6)/q3*100 = (432500+52700)/(1050000)*100 = 46.2%

Overall efficiency of total system including hot gas furnace,

= (heat for vaporization + sensible heat for material) / (total heat input)
= (q41+q61)/(q8+q5)*100 = (446800+79100)/(1240000+40500) = 41.1%

Theoretically attainable maximum thermal efficiency,

max = (T3-T4)/(T3-T0)*100 = (300-120)/(300-20)*100 = 64.3%

60/85
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