Nuclear boilers are limited in steam temperature by material constraints, and solar is limited by concentration of the energy source.
As locomotive development proceeded, larger superheaters were fitted and steam temperatures increased.
By injecting water at the ends, the water is heated to steam temperatures and is transported throughout the targeted volume.
A steam boiler may be fitted with a pyrometer to measure the steam temperature in the superheater.
China has limited the construction of small power plants, which are inefficient, and has required the use of somewhat higher steam temperatures and pressures.
Red fluid began rising in the glass columns set into the dashboard that showed steam temperature, boiler pressure, water, fuel, battery condition, and air resevoir.
Thirty seconds later another bell rang and the steam temperature and pressure gauges rose over the operating minimum level.
In most salts, this will increase the boiling point temperature, and the steam temperature that is disengaged.
The boiler is heated by 16 burners, four in each corner, which can be retracted and tilted to control the steam temperature.
These alloys limit practical steam temperatures to 655 C while the lower temperature of a steam plant is fixed by the boiling point of water.