Steam Boilers, Engines, Nozzles and Turbines
The ultimate analysis of fuel lists

Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash

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Steam Boilers, Engines, Nozzles and Turbines
In fire tube boilers

The flames and hot gases pass through the tubes which are surrounded by water
Forced circulation takes place
None of these
Water passes through the tubes which are surrounded by flames and hot gases

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