Couple of problems here . . .
1). The relative humidity of air depends in a really big way on the temperature of the air.
2). There's no such thing as a "cubic sq ft".
2%
The nuclear reactor produces heat which is used to raise steam to feed a steam turbine/generator set
The steam turbine will produce 400 J of output, and the steam engine 250 J. That's what the efficiency figure means.
nothing
Benjamin Franklin Isherwood
As you probably already know, water boils at 212F (100C). This only applies when at sea level with an atmospheric pressure of 14.7psia. To raise the boiling point all you need to do is raise the pressure. In a steam plant where steam is used to drive turbines, the water is pressurized by heating it in an enclosed system. As the water turns to steam, the steam has no where to escape and the pressure in the enclosed system begins to rise. As the pressure rises so does the boinling point. Some plants will raise the temperature to 500F which corresponds to a pressure of about 620psi.
Yes. The specific heat capacity of liquid water is 4.184 J/g•oC, and the specific heat capacity of steam is 2.010 J/g•oC.
Benjamin Franklin Isherwood
Yes. This happens, for example, when steam is used to raise something like a balloon.
You put coal to boil the water in the boiler to raise steam to drive the pistons which turns the wheels.
Methane needs oxygen to combust so it would depend on how much oxygen there is in the chamber.
Law of Definite Porportions