In a Woolf type compound engine, the high pressure and low pressure cylinders

Steam Boilers, Engines, Nozzles and Turbines
In a Woolf type compound engine, the high pressure and low pressure cylinders

Have separate piston rod

Are set in V arrangement

Are set at 90°

Have common piston rod

Have separate piston rod

Are set in V arrangement

Are set at 90°

Have common piston rod

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Steam Boilers, Engines, Nozzles and Turbines
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

(I.P.)²

I.P.

1/(I.P)²

1/(I.P)

(I.P.)²

I.P.

1/(I.P)²

1/(I.P)

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

m = a + b × I.P.

I.P. = a × m + b

m = (b/I.P.) - a

I.P. = b × m + a

m = a + b × I.P.

I.P. = a × m + b

m = (b/I.P.) - a

I.P. = b × m + a

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

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

Water is converted into steam in one pass without any recirculation

Feed pump is employed to supplement natural circulation in water wall type furnace

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

Water is converted into steam in one pass without any recirculation

Feed pump is employed to supplement natural circulation in water wall type furnace

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

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Steam Boilers, Engines, Nozzles and Turbines
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

Worsen

May improve/worsen depending on size

Remain unaffected

Improve

Worsen

May improve/worsen depending on size

Remain unaffected

Improve

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Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by

Cooling the oil in the settling tanks

Suspension

Burning the oil

Heating the oil in the settling tanks

Cooling the oil in the settling tanks

Suspension

Burning the oil

Heating the oil in the settling tanks

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines In a Woolf type compound engine, the high pressure and low pressure cylinders

Steam Boilers, Engines, Nozzles and Turbines Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

Steam Boilers, Engines, Nozzles and Turbines Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

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

Steam Boilers, Engines, Nozzles and Turbines In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

Steam Boilers, Engines, Nozzles and Turbines Water and sediment in fuel oil can be removed by

Steam Boilers, Engines, Nozzles and Turbines
In a Woolf type compound engine, the high pressure and low pressure cylinders

Steam Boilers, Engines, Nozzles and Turbines
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

Steam Boilers, Engines, Nozzles and Turbines
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

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

Steam Boilers, Engines, Nozzles and Turbines
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by