Steam Boilers, Engines, Nozzles and Turbines
In designing air preheaters, the important design consideration is that

Heat transfer area should be optimum
Approach temperature should be as low as possible
Stack gases should not be cooled to the dew point
Handling and maintenance should be easier

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Steam Boilers, Engines, Nozzles and Turbines
Boilers, Engines, Nozzles and Turbines Objective Questions and Answers pdf:- 101. The difference between cornish boiler and lancashire boiler is that

None of these
former is water tube type and latter is fire tube type
former is fire tube type and latter is water tube type boiler
former contains one fire tube and latter contains two fire tubes

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about effect of sulphur in fuel?

It helps in electrostatic precipitation of ash in flue gases
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
It has heating value
It erodes furnace walls

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