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Having the right equipment is important to retaining water quality. That said, the chemicals added to treat the water make the biggest difference in the longevity of the boiler and the quality of the water. These chemicals play different roles, and each boiler may require a different composition of water based on its materials and operation.
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Top 250 I.C. Engine Multiple Choice Questions And Answers
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A steam heating system for a building 175 m high is supplied from a boiler 20 m below ground level. Dry, saturated steam is supplied from the boiler at 300 kPa, which reaches the top of the building at 250 kPa. Heat losses from the supply line to the surroundings is 50 kJ/kg. Determine (a) the quality of steam at the 175 m elevation.
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Energy Engineering MCQs focuses on "Ash and its Effects on Boiler Operation and Performance". 1. Ash is widely used in the production of _____ A. Plastics B. Thermal wear C. Food oxidants D. Cement View Answer. Answer: D clarification: Ash is widely used in the production of cement. Fly ash is pozzolanic and develops self hardening characteristics.
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2.7 Energy Performance Assessment of Boilers 2.8 Steam Turbines 2.9 Condenser 2.10 Cooling Tower 2.11 Steam Power Station Control 2.12 Summary 2.13 Key Words 2.14 Answers to SAQs 2.1 INTRODUCTION Two important area of application of thermodynamics are power generation and refrigeration.
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250+ TOP MCQs on Boiler Mountings – 2 and Answers
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Sep 17, 2017 · Boiler is the main part of any thermal power plant. It is used to convert water into steam. In any steam power plant water tube boiler is used. It contains furnace inside the boiler shell. The Coal burns into this section. Drum is major part of steam power plant boiler. It is situated top of the boiler and used to separate water from steam.
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dinated boiler-following (BF) mode and coordinated turbine-following(TF)mode.1,5,7,8 Historically, boiler following schemes were the first to be used.9 In boiler following mode, the boiler awaits the actions of the turbine to match the requested generation. The turbine control valves regulate the steam flow into the turbine in terms of
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Dec 17, 2017 · Assuming ideal operation and processes, what is the thermal efficiency of this cycle? A) 7.7% B) 17.7% C) 27.7% D) 37.7% A simple Rankine cycle operates its boiler at 3 MPa with an outlet temperature of 350 °C and its condenser at 50 kPa. The turbine has an isentropic efficiency of 0.9 while all other operating conditions and process are ideal.
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a) mass of fuel consumed x its calorific value b) mass of fuel consumed x its density c) mass of fuel consumed x its specific heat d) mass of fuel consumed x its heat capacity 13. In a coal fired boiler, hourly consumption of coal is 1000 kg. The ash content in the coal is 3%. Calculate the quantity of ash formed per day. Boiler operates 24 hrs
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Answer: Option B. 9 Fire tube boilers are those in which. (A) Flue gases pass through tubes and water around it. (B) Water passes through the tubes and flue gases around it. (C) Work is done during adiabatic expansion. (D) Change is enthalpy. Show Answer. Answer: Option A. 10 Size of boiler tubes is specified by.
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2. BOILERS Bureau of Energy Efficiency 27 Syllabus Boilers: Types, Combustion in boilers, Performances evaluation, Analysis of losses, Feed water treatment, Blow down, Energy conservation opportunities. 2.1 Introduction A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam.
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