Jun 23, 2017 · Equivalent evaporation actually indicates the amount of heat added in the boiler for steam generation. Equivalent evaporation refers to the quantity of dry saturated steam generated per unit of time from feedwater at 100°C to steam at 100°C at the saturation pressure corresponding to 100°C. Sometimes it is called equivalent evaporation from
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The Actual Specific Evaporation Of A Certain Boiler Is 10. Factor Of Evaporation Is 1.05. If The Heating Value Of Fuel Is 30,000 KJ/kg, Find The Boiler Efficiency. 14. The ASME Evaporation Units Of A Boiler Is 24,827,000 KJ/hr. The Boiler Auxiliaries Consumes 1.5 MW. What Is The Net Boiler Efficiency If The Heat Generated By The Fuel Is 30,000
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2011-12-13 · STEAM Factor of Evaporation. The factor of evaporation for any given feed water temperature and boiler pressure is calculated by dividing the total heat above F. in one pound of steam at the given pressure minus the total heat in one pound of the feed water above F. by the latent heat of steam at F., which is 970.4 British Thermal Units.
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[PDF]Steam boilers and waste heat boilers – Viessmann and gas with all conventional, commercially available, advanced burner systems. … 6/7. Saving energy and protecting the climate. Viessmann is well aware of its … lowering the consumption of fossil fuels and … High pressure steam boiler. 1 to 4 t/h.
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Chapter 4.1: Boiler Short type questions 1. In the absence of steam flow meter, suggest a method by which steam quantity can be assessed in a boiler. Ans. The feed water flow into the boiler can be used as an effective tool to quantify the steam flow rate from a boiler.
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The factor of evaporation for all boilers is always. A. Equal to unity. B. Less than unity. C. Greater than unity. D. None of these. Answer: Option C.
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Dec 19, 2020 · 379. A water tube boiler has a capacity of 1000 kg/hr of steam. The factor of evaporation is 1.3, boiler rating is 200%, boiler efficiency is 65% and heating surface area is 0.91 m 2 per bo.Hp. and the heating value of fuel is 18,400 kCal/kg. The total coal available in the bunker is 50,000 kg.
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Nov 03, 2006 · FACTOR OF EVAPORATION Water enters the boiler at 225°F. 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
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Equivalent Evaporation | Advanced Steam Traction
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11. A boiler generates steam at 12.5 bar pressure. Temperature of the feed water is 35°C. Determine the factor of evaporation if the dryness fraction of the steam is 0.85. a) 1.32 b) 0.85 c) 1.56 d) 1…
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Nov 03, 2006 · 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) CYCLE OF CONCENTRATION OF BOILER WATER
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In the table of " Factors of Evaporation, " the factor corresponding to a steam temperature of 302° and a feed temperature of 158° (which are the numbers in the table nearest to the given ones), is 1.09. Now this engine requires an evaporation of 6 times 79, or 474 pounds of water per hour, at a pressure of 50 pounds, or an equivalent evaporation " from and at 212°" of 1.09 times 474, which is equal to 516.66 …
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Factor Affecting and Measuring Evaporation (with diagram) As a result of evaporation, visible water converts into vapour. The process of conversion of water into vapour due to solar radiation is called evaporation. Through this process oceanic water reaches into the atmosphere. Evaporation of water from oceans takes place more from continents.
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Value of evaporation ratio for different types of boiler is listed as-a) Coal fired boiler- 4.0-6.0. b) Oil fired boiler- 13.0-14.5 . c) Gas fired boiler- 11.0-13. More information about the questions of boiler, such as boiler capacity, how to calculate boiler price and cost, etc., …
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Boiler Horsepower What 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.
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Example 3.5.1 A boiler has a 'from and at' rating of 2 000 kg/h and operates at 15 bar g. The feedwater temperature is 68°C. Using the graph: The percentage 'from and at' rating ≈ 90% Therefore actual output = 2 000 kg/h x 90% Boiler evaporation rate = 1 800 kg/h The use of Equation 3.5.1 will determine a factor to produce the same result
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1. 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.
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Factors Of Evaporation - ChestofBooks.com
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The factor of evaporation of a boiler is 1.1 and a steam rate of 0.79 KG/sec. What is the developd boiler horse power? A. 300 B. 200 C. 869 D. 250 5. The percent rating is water tube boiler is 200%, factor of evaporation of 1.08 and heating surface area is 256 m². Find the rate of evaporation.
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Johnston Boiler Company Boiler Glossary
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