## ﻿Boiler Performance - OSTI GOV

• • ### review help: Power and Industrial Plant

Mar 01, 2008 · Two boilers are operating steadily on 91000 kg of coal contained in a bunker. Boiler A is producing 1591 kg of steam per hr at 1.2 factor of evaporation and has an efficiency of 65%. Boiler B produces 1364 kg of steam per hr at 1.15 factor of evaporation and has an efficiency of 60%. Heating value of the coal is 31750 kJ / kg.Learn More

• • ### K J SOMAIYA COLLEGE OF ENGINEERING MUMBAI-77

9/19/2020 5 Boiler Performance Parameters 1. Equivalent evaporation from and at 100 C 2257 Total heat required to evaporate feed water /w of fuel 2257 2257 kg kg m h h m m h h e f s w u Where, h= enthalpy of steam (kJ/kg) h w = enthalpy of feed water (kJ/kg) f s e m m m mass of water actually evaporated in kg per kg of fuel burnt. 2. Factor of Learn More

• • ### Johnston Boiler Company Boiler Glossary - SCTI - Home

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. BHP = (LB/HR*fe)/34.5.Learn More

• • ### If a boiler has a factor of evaporation of 1.075 and its

If a boiler has a factor of evaporation of 1.075 and its actual flow rate is 220 kg/min, calculate the equivalent evaporation in kg/hr. A. 32871 kg/hr B. 13200 kg/hr C. 12279 kg/hr D. 236.5 kg/hr E. 14190 kg/hr Answer: ELearn More

• • ### 2nd Class Written Exam (Boston) 8/10/93 - Mass Engineers

17.) A 275 horse power boiler is producing steam at 100 psi, burning #6 fuel oil 18,500 btu / lb. Factor of evaporation is 1.12 and the boiler is 80% eff. What is the evaporation rate and HP. ? 18.) 500 lbs of water @ 150 0 and 300 lbs @ 90 0 are mixed together, what is the final temperature of the mixture? 19.Learn More

• • ### Thermal Engineering MCQ's – Evaporative Capacity and

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. Determine the temperature of feed water of a boiler having factor of evaporation equal to 1.14. The enthalpy of 1 kg of steam is 2700 kJ/kg. a) 30°C b) 40°C c) 35°C d) 45°C.Learn More

• • ### 250+ TOP MCQs on Evaporative Capacity and Equivalent

Equivalent evaporation is an important factor while determining the performance of the boiler. 6. A boiler generates 30 kg of steam at 11.5 bar in 1 hour with the consumption of 3 kg of coal.Learn More

• • ### Boiler Efficiency: How To Calculation? - NoakMech

For a small boiler it is estimated to be 2 percent. Step 5: Calculate boiler efficiency and boiler evaporation ratio. Efficiency of boiler (n) = 100 – (i + ii + iii + iv + v + vi + vii) i. Heat loss due to dry flue gas : 9.29 percent. ii. Heat loss due to evaporation of water formed due to H2 in fuel : …Learn More

• • ### ﻿The Factor Of Evaporation Of The Boiler Is 1 12 5

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 30,000Learn More

• • ### Steam Boilers, Engines, Nozzles And Turbines MCQ Questions

The factor of evaporation for all boilers is always greater than unity. B. The amount of water evaporated in kg per kg of fuel burnt is called equivalent evaporation from and at 100° C. C. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called boiler efficiency. D. None of the aboveLearn More

• • ### What is the rate of evaporation of a water tube boiler if

The factor of evaporation is 1.08. BHP = (LB/HR*fe)/34.5 Factor of Evaporation Water enters the boiler at 225 F. The. formula for package type boiler heating surface. The commonly used calculation formula is: hot water boiler load D MW = T * S / 215000, which T for indoor and outdoor temperature difference, S for heating area, 215000 for theLearn More

• • ### Performance of Boiler: Effiency, Power and Heat Balance Sheet

May 12, 2020 · The factor is known as factor of evaporation and is usually denoted by Fe. Its value is greater than unity for all boilers. In S.I. units, the value of latent heat at a temperature of 100° C is 2256.9 KJ/kg.Learn More

• • ### BOILERS | Energy-Models.com

Fire tube or "fire in tube" boilers; contain long steel tubes through which the hot gasses from a furnace pass and around which the water to be converted to steam circulates. (Refer Figure 2.2). Fire tube boilers, typically have a lower initial cost, are more fuel efficient and easier to operate, but they are limited generally to capacities of 25 tons/hr and pressures of 17.5 kg/cm 2.Learn More

• • ### 1. A certain coal has the following ultimate analysis

Calculate the volume of air in m3/hr with air 15.6°C and 100 kPa the coal is burned with 35% excess air. Boiler efficiency of 65% and factor of evaporation of 1.12. 2.The heating value of fuel supplied in a boiler is 42,000 kJ/kg. If the factor of evaporation is 1.20 and the actual specific evaporation is 12, what is the efficiency of the Learn More

• • ### Steam Solution Flashcards | Quizlet

MCQs: 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 - …Learn More

• • ### Chapter 4.1: Boiler Short type questions

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.Learn More

• • ### Part II. Energy Efficiency by Sectors Energy Efficiency in

Efficiency of Boiler. Actual Evaporation Rate is rate of steam produced from boiler under a certain pressure and feed water temperature is equal 30 °C. Equivalent Evaporation Rate is rate of steam produced from boiler under atmospheric pressure and temperature 100°C. Boiler Horse Power: 1 34.5 / 15.65 / Bhp lb h kg h 10Learn More

• • ### 1 Approved Answer - transtutors.com

Aug 23, 2021 · 13. 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 Learn More

• • ### A boiler generates 7.5 kg of steam per kg of coal | Chegg.com

A boiler generates 7.5 kg of steam per kg of coal burnt at a pressure of 11 bar, from feed water having a temperature of 70ºC. The efficiency of the boiler is 75 % and factor of evaporation is 1.15, calculate Calculate: i. Factor of evaporation; ii. Calorific value of coal in Kj/Kg; iii. Equivalent evaporation in Kg of steam per Kg of coal.Learn More

• • ### Boilers | PDF | Boiler | Horsepower

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.Learn More