The current equivalency is either 41,844 btu/hr heat input or 33,475 heat output from burners. Efficiency of the burners is assumed 80%. Now if you have an older fire tube boiler, the boiler horsepower is based on heating surface and the equivalency is 1 BoHp= 10 sq.ft. of heating surface.

Learn More46 (1) In this section, "extended surface" does not include the area of a superheater. (2) The heat receiving surface area of a boiler must be stated in square metres (m2), must include the extended surface and the heating surface must be computed as follows: (a) a heating surface, as part of a circulating system in contact on one side with

Learn MoreNov 24, 2005 · Other Heating: Resistance Boiler (13.5 KW), ComfortMax 75 Post by lsayre » Wed. Oct. 26, 2016 12:09 pm I believe that for residential size anthracite stoker boilers you can get a decent initial ballpark guess of their Gross BTUH output rating if you know their heating surface area in square feet, by multiplying the heating surface area in

Learn MoreJan 16, 2007 · 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.

Learn More1. ENERGY PERFORMANCE ASSESSMENT OF BOILERS Bureau of Energy Efficiency 1 1.1 Introduction Performance of the boiler, like efficiency and evaporation ratio reduces with time, due to poor combustion, heat transfer fouling and poor operation and maintenance. Deterioration of fuel quality and water quality also leads to poor performance of boiler.

Learn MoreMeasurement of heating surface The formula for the total heating surface of a Lancashire boiler having plain c), For steam and water drums of water tube boilers the heating surface of the Boiler Surface Area: More is not Necessarily Better The basic equation for heat transfer across a surface is:

Learn MoreIBR - 1950 : Reg. 3. 2017-3-29 · a) For the purpose of regulating the area of the safety valves and the amount of registration and inspection fees the "heating surface" of a boiler shall be the total surface of all plates and tubes exposed to heat on one side and in contact with water on the other measured on the water side or the fire side, whichever is larger.

Learn More46 (1) In this section, "extended surface" does not include the area of a superheater. (2) The heat receiving surface area of a boiler must be stated in square metres (m2), must include the extended surface and the heating surface must be computed as follows: (a) a heating surface, as part of a circulating system in contact on one side with

Learn MoreA detailed heat loss should be provided before a new boiler is installed. * Heating multipliers (H.M.) BTU/Hr based on 60 degrees F Temperature Difference (T.D.) Procedure. Measure the total length of all outside walls for the house. Calculate gross wall area by multiplying total length by height of the walls. Measure the window and door area.

Learn MoreBoiler Capacity Calculation with Heating Surface Area 2018-09-29 11:00:44 1 ton steam boilers generate 600,000 calories of heat, according to the standard per square meter of building (residential, office, hotel, etc.) heating 100 calories, so a ton of steam boiler standard heating area of 600000 /100 = 6000 square meters.

Learn MoreHeating surface area of a boiler is usually expressed in square Determining Boiler Capacity from Heating Surface Area Dec 10, 2004 · Determining Boiler Capacity from Heating Surface Area Determining Boiler Capacity from Heating Surface Area but I need to convert this area into boiler Heating surface calculations SmokStak Sep 12,

Learn MoreUnit Descriptions; 1 Horsepower (boiler): The energy rate needed to evaporate 34.5lb of water at 212 °F (100 °C) in one hour. Equal to 33,475 BTU/h.

Learn MoreIn fire tube boilers, normally the heat transfer area of reference is taken as the outside surface of the tubes. So you use the outside diameter of the tubes for the calculation of the heat transfer area.

Learn MoreThe earliest such measure of boiler output, the nominal or rated boiler horsepower, was simply based on the area of the boiler's heating surface. Each 10 square feet of surface represented 1 boiler horsepower, so a boiler with 100 square feet of heating surface would be rated at 10 boiler horsepower.

Learn MoreThe example also shows that you can have comparable performance even when the the total surface area varies by 9% (for each boiler, total area = sum of furnace, evaporator, economizer areas, which total 13,158 vs. 14,336 sq. ft) Also, the location of the convective superheater affects the surface area significantly.

Learn More