equal to carnot cycle

less than carnot cycle

more than carnot cycle

could be anything

decreasing initial steam pressure and temperature

increasing exhaust pressure

decreasing exhaust pressure

increasing the expansion ratio

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