Steam Boilers, Engines, Nozzles and Turbines
In natural circulation type boiler,

Feed pump is employed to supplement natural circulation in water wall type furnace
Water is converted into steam in one. Pass without any recirculation
Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam
Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?

Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes

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