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

frictional losses

it is not possible to achieve 0°K temperature

leakage

non-availability of ideal substance