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Read MoreJun 12, 2017 · Boiler Rating Factors. 1 Boiler horsepower. Nominally 34.5 pounds of steam per hour. Equivalent evaporation. Actual evaporation X factor of evaporation. Kilo Btu per hour, kB. various polymers and sequestering agents are utilized to prevent the deposition of scale deposits on heat transfer surfaces.

Read MoreNov 03, 2006 · The boiler pressure is 100 psi and the boiler water temperature is 338°F. The latent heat is 881 Btu. What is the factor of evaporation? FE = SH + LH / 970.3 FE = SH + LH / 970.3 FE = ((338 - 225) + 881) / 970.3 FE = 1.02 Where, FE factor of evaporation SH sensible heat LH latent heat 970.3 latent heat of evaporation of water at 212°F. (constant)

Read MoreŁ To find out the efficiency of the boiler Ł To find out the Evaporation ratio The purpose of the performance test is to determine actual performance and efficien-cy of the boiler and compare it with design values or norms. It is an indicator for tracking day-to-day and season-to-season variations in boiler efficiency and energy efficiency

Read MoreTherefore, the equivalent evaporation of a boiler, from and at 1000C is: ms(h2 – h1) kg in the given time or per kilogram of fuel 2256.9 QUESTION 1.1 A boiler with super heater generates 6000 kg/h of steam at a pressure of 15 bar, 0.98 dry at exit from boiler and at a temperature of 300oC on leaving the super heater. If the feed

Read MoreQuestion is ⇒ The ratio of heat utilised to produce steam and the heat liberated in furnace is known as, Options are ⇒ (A) boiler effectiveness, (B) boiler evaporative capacity, (C) factor of evaporation, (D) equivalent evaporation, (E) boiler efficiency., Leave your comments or Download question paper.

Read MoreThe boiler pressure is 100 psi and the boiler water temperature is 338°F. The latent heat is 881 Btu. What is the factor of evaporation? FE = SH + LH / 970.3 FE = SH + LH / 970.3 FE = ((338 - 225) + 881) / 970.3 FE = 1.02 Where, FE factor of evaporation SH sensible heat LH latent heat. Learn More

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Read MoreThe equivalent of the evaporation of 1 kg of water at 100°C to steam at 100°C. Equivalent evaporation of boiler = m s ( h − h f) E n t h a l p y o f v a p o r i s a t i o n o f w a t e r a t 100 O C. Calculation: Given: m s = 2000 kg/hr, h = 2426 kJ/kg, h f = 168 kJ/kg, Enthalpy of vaporisation of water at 100°C = 2258 kJ/kg.

Read MoreFind the evaporation factor and equivalent evaporation from and at 100°Сin kg per kg of fuel. Ans. 1.09; Question : Problem (3.3) In a boiler trial, the following observations were recorded: Boiler pressure=10 bar; dryness fraction of steam=0.95; coal consumption=500 kg/h; calorific value of coal=30500 kj/kg; feed water temperature=50°C

Read MoreFor example, if a boiler operated at 150 psig (1.03 MPa) uses feedwater of suitable quality for use in a 1001-1500 psig (6.9-10.34 MPa) boiler, then the boiler water limits and chemical treatment program should be based on the higher pres sure guidelines.

Read MoreMar 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.

Read MoreA boiler produced equivalent evaporation rate 5,000kg/h. If this boiler operates under pressure and feed water temperature are 5 barg and 25°C respectively. What is the actual evaporation rate? At P = 5 barg, h ga = 2757kJ/kg and, feed water temperature 25°C,h fa = 25°C X 4.19kJ/kg°C = 104.75kJ/kg

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