how long does a small boiler add a water calculation

Boiler Sizing Calculators | Powerhouse

To do so we divide the BTU/hour by a constant of 33475. This constant represents water being converted to steam which is 34.5 pounds of water multiplied by 970.3 BTU/lb or latent energy. For this calculation you will enter the BTU/hr of your operation along with the efficiency of your boiler.

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Proper sizing of Boiler Feedwater System

One boiler horsepower = 34.5 lbs/hr of steam (or water) from and at 212o F. We also know that one-gallon of water weighs 8.37 lbs. To calculate the storage tank needed use the following formula: BHP X 34.5 ÷ 8.337 lbs ÷ 60 min. X 10

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Calculating heat required for Domestic Hot Water Systems

This does not apply where a Combi Boiler is installed as no hot water storage is involved. Imperial calculations . The size of hot water tank will vary between houses larger houses having larger tanks as it is assumed that the need for hot water is greater. For this exercise a 26 gallon tank is assumed. First a design reheat time needs to be ...

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