horizontal fire-tube boiler
horizontal water-tube boiler
veritcal water-tube boiler
vertical fire tube boiler
stationary fire tube boiler
stationary water tube boiler
water tube boiler with natural/forced circulation
mobile fire tube boiler
(a) regeneration
(b) reheating of steam
both (a) and (b)
cooling of steam
1000 J
360 kJ
3600 kJ
3600 kW/sec
producer gas
coal gas.
water gas
blast furnace gas