one half

one third

one-fifth

two-fifth

carnot cycle

joule cycle

Stirling cycle

brayton cycle

work done during the rankine cycle ;

work done during compression.

work done during adiabatic expansion

change in enthalpy

flue gases pass through tubes and water around it

water passes through the tubes and flue gases around it

work is done during adiabatic expansion

change in enthalpy

horizontal multitubular water tube boiler

water wall enclosed furnace type

vertical tubular fire tube type

horizontal multi-tubular fire tube type