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1. What is the density of superheated steam at a temperature of 823 degrees celsius and 9000 kPa? 2. Calculate how much fuel is needed

1. What is the density of superheated steam at a temperature of 823 degrees celsius and 9000 kPa?

2. Calculate how much fuel is needed to run a boiler that is producing 20000 kg / day of steam at a pressure of 1500 kPa and a temperature of 400 degrees celsius if it has an efficiency of 72%. Assume feedwater is available at 90 degrees celsius and one atmosphere. The fuel used is coal with a heating value of 37 MJ/kg.

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