The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

T1 /88.25H

176.5H/T1

88.25H/T1

T1 /176.5H

T1 /88.25H

176.5H/T1

88.25H/T1

T1 /176.5H

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge through a chimney occurs when the height of chimney is

Outside temperature is very low

Equal to the height of the hot gas column producing draught

Infinitely long

Around 200 meters

Outside temperature is very low

Equal to the height of the hot gas column producing draught

Infinitely long

Around 200 meters

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Steam Boilers, Engines, Nozzles and Turbines
A device used to increase the temperature of saturated steam without raising its pressure, is called

Blow off cock

Fusible plug

Superheater

Stop valve

Blow off cock

Fusible plug

Superheater

Stop valve

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Steam Boilers, Engines, Nozzles and Turbines
The numbers of fire tubes in a Cochran boiler are

75

115

225

165

75

115

225

165

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Steam Boilers, Engines, Nozzles and Turbines
100% efficiency of a thermal cycle cannot be achieved because of

Frictional losses

It is not possible to achieve 0°K temperature

Non availability of ideal substance

Leakage

Frictional losses

It is not possible to achieve 0°K temperature

Non availability of ideal substance

Leakage

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows

Carnot cycle

Stirling cycle

Rankine cycle

Joule cycle

Carnot cycle

Stirling cycle

Rankine cycle

Joule cycle

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines The maximum discharge through a chimney occurs when the height of chimney is

Steam Boilers, Engines, Nozzles and Turbines A device used to increase the temperature of saturated steam without raising its pressure, is called

Steam Boilers, Engines, Nozzles and Turbines The numbers of fire tubes in a Cochran boiler are

Steam Boilers, Engines, Nozzles and Turbines 100% efficiency of a thermal cycle cannot be achieved because of

Steam Boilers, Engines, Nozzles and Turbines The expansion of steam in a nozzle follows

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge through a chimney occurs when the height of chimney is

Steam Boilers, Engines, Nozzles and Turbines
A device used to increase the temperature of saturated steam without raising its pressure, is called

Steam Boilers, Engines, Nozzles and Turbines
The numbers of fire tubes in a Cochran boiler are

Steam Boilers, Engines, Nozzles and Turbines
100% efficiency of a thermal cycle cannot be achieved because of

Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows