High-pressure steam-heating, compared with the heating by low pressure, is little used.
It is certainly the most scientific method of steam-heating, and heat can be made to travel a greater distance by its aid than by any other means.
Compared with heating by hot water, steam-heating requires less piping, which, further, may be of much smaller diameter to attain a similar result, because of the higher temperature of the heat yielding surface.
In large pans a mechanical stirring apparatus is provided, which in some cases, as in Morfit's steam " twirl," is formed of the steam-heating tubes geared to rotate.
A steam heating plant pipes heat to many shops, offices and residences.
