Steam Boilers, Engines, Nozzles and Turbines
Besides mean effective pressure, the data required to determine the indicated power of an engine include

Piston diameter, length of stroke and speed of rotation
Piston diameter, length of stroke and calorific value of fuel
Specific fuel consumption, speed of rotation and torque
Piston diameter, specific fuel consumption and Calorific value of fuel

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

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

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