Steam Boilers, Engines, Nozzles and Turbines
Water tube boilers are those in which

Work is done during adiabatic expansion
Water passes through the tubes and flue gases around it
Change in enthalpy
Flue gases pass through tubes and water around it

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Steam Boilers, Engines, Nozzles and Turbines
In cross compounding, the cylinders are arranged

At 90° and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Side by side and each cylinder has common piston, connecting rod and crank

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