The heating capacity of a radiator is determined by its outside surface area, and is commonly termed, radiating surface or heating surface.
Radiators are sold at a definite amount per square foot, and may be made to contain any amount of heating surface, for different heights from 12 to 45 inches.
It will be seen that the water space surrounds the fire-box except at the bottom and that the space above the fire-box presents a large amount of heating surface to the flame and heated gases as they pass to the chimney.
Another point in regard to heating surface in the production of steam is this, that only such surface as is exposed to a heat equal to turning the water into steam is effective.
Heating Surface--The entire surface of the boiler exposed to the heat of the fire, or the area of steel or iron sheeting or tubing, on one side of which is water and on the other heated air or gases.
It has considerably greater water capacity, heating surface--the furnace being entirely enclosed--and water surface than the boiler just described.
Fire-tube boilers from the nature of their design do not permit the variety of combinations of grate surface, heating surface, and combustion space possible in practically any water-tube boiler.
About 15 square feet of heating surface and 3/4 square feet of grate surface.
Some makers estimate a boiler to have a horse power for every fifteen square feet of heating surface it possesses, while others allow but 12 square feet.
The fire box or combustion chamber being taper increases the effectiveness of its sides as heating surface, since the heat in its vertical passage impinges against it.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "heating surface" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
