A boiler has a steaming capacity of 34,500 lb of steam per hour. The evaporation rate is 10lb/ft^2 of heating surface per hour. What is the boiler heating surface. 13.7 ft^2. How many square feet of heating surface does a 3-inch fire tube 20 ft long with 3/16-inch wall have.
DetailsA boiler generates 8 kg of dry saturated steam per kg of fuel oil burned. Fuel oil heating value is 33 000 kJ/kg. Feedwater is supplied at 70°C, and the boiler pressure is 1400 kPa. Calculate the boiler efficiency. 57.3% 60.5% 74.7% 85.0% 92.3%
DetailsThe primary purpose of the boiler is to supply energy to the facility's operations – for comfort heating, manufacturing process, laundry, kitchen, etc. The nature of the facility's operation will dictate whether a steam or hot water boiler should be used. Hot water is commonly used in heating applications, with the boiler supplying water to the system at 120°F to 220°F.
Detailsh g = enthalpy steam (Btu/lb, kJ/kg) h f = enthalpy condensate (Btu/lb, kJ/kg) m = steam evaporated (lb/h, kg/s) Boiler Horsepower - BHP. The Boiler Horsepower (BHP) is. the amount of energy required to produce 34.5 pounds of steam per hour at a pressure and temperature of 0 Psig and 212 o F, with feedwater at 0 Psig and 212 o F. A BHP is
DetailsWhat is the boiler horsepower of a boiler generating 21,500 lbs of steam per hour at 155 psi? The factor of evaporation is 1.08. BHP = (LB/HR*fe)/34.5 BHP = (LB/HR*fe)/34.5 BHP = 21500 * 1.08 / 34.5 BHP = 673 Where, BHP boiler horsepower Lb/Hr pounds per hour Fe factor of evaporation (can be assumed to be equal to 1)
Details165 Example 11.3 A Lancashire boiler generates 2400 kg of dry saturated steam per hour at a pressure of 11 bar. .g2872g4667 g2871g2871g2869g2876g2868 = 0.725 Example 11.4 A coal fired boiler consumes 400 kg of coal per hour. The boiler evaporates 3200 kg of water at 44.5 o C into superheated steam at a pressure of 12 bar and 274.5 o C.
Detailsdrums. A steam drum (upper) and mud drums (lower) are connected by the tubes, which form both the convection section and the furnace area. Packaged industrial watertube boilers are typically rated in pounds of steam per hour output at operating conditions and range from 10,000 to 134,000 lbs/hr.
Detailsor condensate return. Also, the calculation uses only one boiler efficiency. Steam is being generated at 100 psig and is being returned to a deaerator tank operating at 10 psig. Fuel cost is $9.50/MMBtu, and boiler efficiency is 80%. $11.67 per 1,000 lbs. IMPROVING THE CALCULATION OF THE UNLOADED COST OF STEAM Condensate Return to the Boiler
DetailsA boiler generates 5000kg of steam per hour at 2Mpa the steam temperature is 325'c and the feed water temperature is 50'c. The efficiency of the boiler is 80% when using oil of Higher Heating Value 45500kJ/kg. The steam generated is supplied to a turbine which develops 500kW and exhausts at 0.2Mpa, the quality of the steam being 0.98.
DetailsBPST = Backpressure Steam Turbine BD = Blowdown BFW = Boiler Feedwater How To Calculate The Tr 2 ue Cost of Steam Figure 1. Typical Schematic Flowsheet for a Simple Steam System In the following equations, the operating cost of the boiler is CO per hour and the process requires S pounds/hour (lb/h) of steam.
DetailsBoiler Horsepower - BHP. The Boiler Horsepower (BHP) is the amount of energy required to produce 34.5 pounds of steam per hour at a pressure and temperature of 0 Psig and 212 ℉, with feedwater at 0 Psig and 212 ℉. “Boiler horsepower, a unit of measurement of power of steam boilers” from Wiki.
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