boilers manufacturers in South Africa

boilers manufacturers in South Africa

Faqs about water tube boilers

Question:heating surface area calculation for boiler water tube or how to calculate heating surface of water tube boiler?

water tube boilers

The heating surface is any part of the boiler metal that has hot gases of combustion on one side and water on the other. Any part of the boiler metal that actually contributes to making steam is heating surface. The amount of heating surface of a boiler is expressed in square meters. The larger the heating surface a boiler has, the more efficient it becomes. The quantity of the steam produced is indicated in tons of water evaporated to steam per hour. Maximum continuous rating is the hourly evaporation that can be maintained for 24 hours.

the calculation goes like this, diam x pi x length of tube in inches x number of tubes divided by 144 .so question,, what is the heating surface area of a boiler with 21 tubes, 2.5" in diam, 16' long.

the calculation will look like this.
diam x pi x (16' x 12") x 21 divided by 144
2.5 x 3.1416 x 192 x 21 divided by 144
2.5 x 3.1416 x 192 x 21 = 31667.328
31667.328 divided by 144 = 219.91

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boilers manufacturers in South Africa
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