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  • Boiler Ratings and Boiler Load - Alken-Murray

    Boiler Ratings and Boiler Load . The oldest method of rating boilers, still used to rate small boilers, is by horsepower (hp). One horsepower is defined as the ability to evaporate 34.5 lbs of water into steam at 212 deg. F and above. Large boiler capacity is generally given in lbs of steam evaporated per hour, under specified steam conditions.Learn More

  • Steam Calculators: Boiler Calculator

    Mar 17, 2015 · Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.Learn More

  • Calculating the Cost of Steam | Thermaxx Jackets

    Jan 31, 2013 · Hg = enthalpy of steam, in Btu/lb. hf = enthalpy of boiler feedwater in Btu/lb. ηB = true boiler efficiency (per ASME PTC 4.1 method) 1,000 = cost measured in units of 1,000 lbs. per hour. In this simplified calculation method, the formula assumes that one boiler is being used, one fuel and a single steam pressure. True Boiler Efficiency (ηB)Learn More

  • KNOWING THE COST OF STEAM

    operating steam pressure, feedwater Btu, and the boiler efficiency. Here is the equation to calculate an unloaded steam cost: = Steam cost, unloaded = Fuel cost in $/MMBtu = Enthalpy of steam, in Btu/lb. = Enthalpy of boiler feedwater in Btu/lb. = True boiler efficiency (ASME PTC 4.1) o Percentage = Steam cost is measured in 1,000 lbs. per hourLearn More

  • 125,000 Pounds Per Hour (lbs/hr) Capacity, 750 psig Design

    Jul 26, 2021 · Find 125,000 Pounds Per Hour (lbs/hr) Capacity, 750 psig Design Pressure Trailer-Mounted Saturated Steam Watertube Boiler from Nationwide Boiler, Inc.Learn More

  • Used Watertube Boilers - Cleaver Brooks Boiler for Sale

    We supply mobile boilers of up to 85,000 lbs/hr with both saturated and superheated steam capability. We also stock larger skid mounted boilers with superheated steam capacities of up to 300,000 lbs/hr.Learn More

  • Steam Cost Calculator - Faber Burner Company

    Steam & Feed Water: Inputs Outputs Units Boiler Operating Pressure (psig) Steam Output Saturated or Superheated (SAT / SH) Heat Input Per Pound of Steam (BTU/lb) Boiler Steam Flow (lb/hr) Cost of 1000 lb of Steam when Firing #2 OilLearn More

  • KNOWING THE COST OF STEAM

    operating steam pressure, feedwater Btu, and the boiler efficiency. Here is the equation to calculate an unloaded steam cost: = Steam cost, unloaded = Fuel cost in $/MMBtu = Enthalpy of steam, in Btu/lb. = Enthalpy of boiler feedwater in Btu/lb. = True boiler efficiency (ASME PTC 4.1) o Percentage = Steam cost is measured in 1,000 lbs. per hourLearn More

  • INDUSTRIAL BOILERS - P C McKenzie Company

    In 1884, ASME defined Boiler Horsepower as the amount of power required to convert 34.5 pounds of water per hour from feedwater at 212 degree F to dry, saturated steam at the same temperature. Today 1 boiler horsepower is equal to 33,475 Btu/Hour which is the amount of energy required to evaporate 34.5 pounds of water at 212 degree F in one hour.Learn More

  • Boiler Feed Water Flow Rate Requirements Chart | Nalco PTS

    Dec 29, 2006 · This chart relates boiler horse power to the flow rate in gallons per minute and pounds per hour. In this case, we need a demineralizer or softener rated for a maximum flow rate of 28 gpm. It will be less depending upon how much condensate is returned. The next part of this question is what water quality is needed for the application.Learn More

  • Glossary | Johnston Boiler | Top Quality Boiler

    Pounds of Steam Per Hour (LB/HR) – Unit of measure that expresses the amount of steam produced by a boiler in one hour. Popping Pressure Predetermined pressure at which a safety relief valve opens and remains open until the pressuredrops. Post-Purge The passing of air through the boiler fireside after normal burner shutdown.Learn More

  • Boiler Formulas | Johnston Boiler | Top Quality Boiler

    200 hp x 34.5 = 6900 lbs of steam per hour. Lbs of steam can be converted to hp by dividing lbs steam per hour by 34.5. Example - Lbs of Steam to Boiler Horsepower Conversion. 5000 lbs of steam / 34.5 = 145 hp boiler. Converting Boiler Horse Power (BHP) to kBtu/hrLearn More

  • Boiler Feed Water Flow Rate Requirements Chart | Nalco PTS

    Dec 13, 2010 · Heating Water with Steam Example: How many lbs per hour of steam is need to heat 40 gallons per minute flow rate of water from 60 ° F to 180 ° F? Sizing a Boiler Feed Pump Receiver. The receiver tank should be able to hold five minutes worth of condensate for boilers up to 200 BHP and 10 minutes of condensate for boilers over 200 BHP. An Learn More

  • Knowing the Cost of Steam - Swagelok

    = enthalpy of steam, in Btu/lb. • h f = enthalpy of boiler feedwater in Btu/lb. • η B = true boiler efficiency (ASME PTC 4.1) • 1,000 = steam cost is measured in units of 1,000 lbs. per hour True boiler efficiency (η B) considers all aspects that influence boiler efficiency, including: • fuel moisture content • …Learn More

  • Plant Engineering | When to use electric steam boilers

    Sep 06, 2001 · 4. Convert the pounds of steam per hour into the boiler kW requirements. Since saturated steam tables are based on feed water at 32 deg F, a simplified kilowatts-per-pound-of-steam table is used to determine a correction factor for feed water at some higher temperature (Table 3).Learn More

  • Miscellaneous Industrial Costs - Michigan

    pounds of steam per hour at 212° F. Available information can be converted to horsepower by using the table below. 1 boiler horsepower = 33,500 B.T.U. per hour = 139 square feet of steam radiation = 223 square feet of water radiation = 34.5# of steam per hour 1 pound of steam per hour = 970 B.T.U. per hourLearn More

  • Steam Capacity Conversion Table | Industrial Controls

    Dec 13, 2010 · Heating Water with Steam Example: How many lbs per hour of steam is need to heat 40 gallons per minute flow rate of water from 60 ° F to 180 ° F? Sizing a Boiler Feed Pump Receiver. The receiver tank should be able to hold five minutes worth of condensate for boilers up to 200 BHP and 10 minutes of condensate for boilers over 200 BHP. An Learn More

  • Unit Conversion--How to Calculate Boiler Horsepower

    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 ℉, with feedwater at 0 Psig and 212 ℉. "Boiler horsepower, a unit of measurement of power of steam boilers" from Wiki.Learn More

  • Main Propulsion Plant DD445 and 692 Classes and Converted

    When the flow of steam is in excess of 5,000 pounds per hour in (B & W) boilers or 5,600 pounds per hour in (F. W.) boilers, or 2.0" of water pressure differential, the instruction sign on the Bailey superheater protection device "Secure Burners" will not be illuminated, while the pointer on the Yarnall-Waring instrument will be in the green zone.Learn More

  • Make-up water for steam boiler — Heating Help: The Wall

    Nov 29, 2005 · November 2005. The make up water for two Weil-Mclain 88 boilers with an output of 3100lb/hr of steam each. They run the the heat and hot water where I work and are using a lot of water because of bad traps. I wanted to replace all the traps this summer but working for the state is not like working in the real world.Learn More