Fuels and Combustion
Which of the following would require least amount of secondary air for combustion
Coke breeze containing 25% ash and 2% volatile matter.
Anthracite containing 10% volatile matter and 8% ash.
Bituminous coal containing 20% ash and 25% volatile matter.
Semi-bituminous coal containing 25% ash and 20% volatile matter.
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Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Phosphoric acid is produced in wet process from phosphate rock and
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be