which of the following non accessory of boilers

Operation and maintenance schedule of a steam turbine plant

A boiler is a complex integration of furnace, super heater, reheater, boiler or evaporator, economizer, and air preheater along with various auxiliaries such as pulverizers, burners, fans, stokes, dust collectors and precipitators, ash-handling equipment, and chimney or stack. The boiler is where phase change (or

Boiler (power generation) - Wikipedia

A boiler or steam generator is a device used to create steam by applying heat energy to water.Although the definitions are somewhat flexible, it can be said that older steam generators were commonly termed boilers and worked at low to medium pressure (7–2,000 kPa or 1–290 psi) but, at pressures above this, it is more usual to speak of a steam generator.

Boilers and Type of Boilers - Forbes Marshall

The Lancashire boiler is similar to the Cornish, but has two large flues containing the fires. Pressure range of the boiler is about 0.7 MPa to 2 MPa and efficiency is 65 to 70%. Fuel in these boilers is added into the grate which heats the gases.

Boiler Test Flashcards - Flashcard Machine - Create, Study

The automatic non-return valve on a boiler being cut in on a line should be open to when the steam pressure on the boiler reaches: 75% to 85% of the line pressure. Exam 11: Steam Boiler Operation


types of boilers and accessories, also the rules formulated by the Board of Boiler Rules, as well as Section I, IV and VII of the ASME Code. Ability to calculate safe working pressure of any boiler using open codebook. Types, purpose and operation of surface condensers, air ejector equipment, and condensate removal equipment.

What Do Boiler Performance Technical Specifications Mean

What Do Boiler Performance Technical Specifications Mean? Technical boiler jargon can be confusing that is why Hassle Free Boilers is here to help you. The following questions are frequently asked by homeowners about their boilers.


classed as unfired steam boilers with the following exceptions: (a) vessels known as evaporators or heat exchangers (b) vessels in which steam is generated by the use of heat

Boiler accessories | CrazyEngineers

Boiler accessories. • Superheated steam has the following advantages : i) Steam consumption of the engine or turbine is reduced. ii) Losses due to condensation in the cylinders and the steam pipes are reduced. iii)Erosion of turbine blade is eliminated. iv) Efficiency of steam plant is increased.


Page 18. NOTE: For optimum performance and serviceability from this boiler adhere to the following recommendations: 1 - Clean Flueways at least once a year - preferably at the end of heating season to remove soot and scale. Inside of firebox should also be cleaned at the same time.

Which of the following varieties of coals is mostly used in

Which of the following varieties of coals is mostly used in steam boilers? a) Non-coking bituminous coal b) Brown coal c) Peat d) None of the above

Viessmann Vitodens 050-W Combi boiler review - Which?

Along with other boilers in the Viessmann Vitodens range, the 050-W29 condensing gas combi offers a choice of optional accessories and can be connected to an outdoor temperature sensor, which allows the boiler to compensate for changes in the weather without you having to lift a finger.


National Fuel Gas Code for NON-exposed chimneys and/or local codes will apply. 2.If an exposed tile-lined chimney is to be used WITHOUT a UL LISTED metallic liner, the boiler must first meet the requirements of the following tables and paragraphs of the National Fuel Gas Code: B. If an existing boiler is removed from a common venting sys-

(PDF) Steam Boiler - ResearchGate

A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam.

A Guide to the Different Types of Boilers for Industrial

Nov 08, 2016 · Among the different types of boilers, commercial boilers are some of the most diverse. These units can use propane, natural gas, non-fueled electric only, or light oil to provide hot water or steam for process requirements or comfort heating.


Excerpts from the following boiler, pressure vessel and piping codes and standards are reproduced here strictly for reference: ASME Sections I, IV and VIII and ANSI/ASME B31 .1 . This informarion has been included to provide a general idea as to the requirements of these codes and standards .


The boiler manufacturer is expected to provide partial load thermal efficiency curves. These thermal efficiency curves must include at least three separate curves at various BTU input levels. If these curves are not available, it is the responsibility of the boiler manufacturer to complete the following performance tests:

Boiler Pressure Parts - Babcock & Wilcox

Boiler Tubing Stocked Inventory We maintain an expansive inventory of tubes in varying sizes and grades to meet emergency or scheduled outage delivery requirements. The following is a partial list of some of the more commonly requested tubes by outer diameter, minimum wall and grade specifications.

LYNX or adjacent to the boiler for reference.

B. Boiler can be installed on both combustible and non-combustible floors, but must NOT be installed on or above carpeting. C. If boiler is to be located over buried conduit containing electric wires or telephone cables, consult local codes or the National Board of Fire Underwriters for specific requirements. SAFETY

What is difference between subcritical supercritical boiler

May 27, 2009 · boiler mountings are used to run a boiler in a safe way ex: safety valve,Water level indicators etc boiler accessories are used to improve the efficiency of a boiler ex: economiser,air preheater etc.

Lancashire Boiler : Principle, Construction & Working

Mar 10, 2016 · Lancashire is a horizontal, stationary fire tube boiler. This boiler is invented by Sir William Fairbairn in the year 1844.The flue gases flows through the fire tube, situated inside the boiler shell, so it is a fire tube boiler. This boiler generatenlow pressure steam. It a internally fired boiler because the furnace is placed inside the boiler.

Chapter 120 -3-26 120-3-26-.01 Authority and Purpose. 120-3

(13) Electric Boiler — A power boiler or heating boiler in which the source of heat is . electricity. (14) External Inspection — An inspection made when a boiler or pressure vessel is in . operation or idle. (15) Existing Installation — Includes any boiler constructed, installed, placed in

Boiler Fittings and Mountings

On multi-boiler applications an additional isolating valve should be fitted, in series with the crown valve. At least one of these valves should be lockable in the closed position. The additional valve is generally a globe valve of the screw-down, non-return type which prevents one boiler pressurising another.

US04CICV01/ US04CICH02 Unit -6 Dr. N. K. Patel Natubhai V

US04CICV01/ US04CICH02 Unit -6 Dr. N. K. Patel 2 The boiler in which hot flue gases are inside the tubes and water is surrounding the tubes is called fire tube boiler. When water is inside the tubes and the hot gases are outside, the boiler is called water tube boiler. Fire tube boilers: Lancashire, loco motive.

what are boiler accessories and their advantages-ZBG Boiler

Then do you know what are the accessories and their advantages? Followings are the main boiler accessories. Air preheater Economizer Super-heater Steam Separator Steam Trap Feed Pump. Then let’s together to see more details about the accessories: Air preheater: The function of air preheater is to increase the temperature of air before enters the furnace. It is generally placed after the economizer so the flue gases on one side and air on other.

U.S.C.G. Merchant Marine Exam Assistant Engineer – Limited

Which of the following is the best reason for opening the air cock when draining a water-tube boiler? o (A) Water flows out of the boiler too rapidly with the air cock closed. o (B) Air coming into the boiler will help dry out the boiler's surface. o (C) Air mixed with the water will create a cleansing effect in the tubes.

Boiler Flue Regulations | A Helpful Guide | Boilerhut

With duel heat exchangers, condensing boilers are incredibly efficient at what they do and can help you save on your energy bills. However, if it’s condensing replacing non-condensing, then there’s a slight chance that the flue would have to be relocated. There are many different types of boilers.

Working and Function of mounting & accessories in boilers

Mar 21, 2013 · First categories include the fittings which are primarily indicated for the safety of the boiler and for complete control the process of steam generation. These units are called mountings. The mounting from an integral part of the boiler and are mounted on the body of the boiler itself. The following mountings are usually installed on the boiler. 1.

Which boiler is the best boiler - a guide from Confused.com

If the flue is made out of metal and you can’t see any steam, your boiler is probably of the non-condensing variety. The 3 types of condensing boilers. Condensing boilers work for both oil and gas-heated homes and come in three varieties: regular, system and combination (combi).

Boiler mountings & accessories - slideshare.net

Nov 26, 2013 · The feed check valve is fitted in water space of the boiler just below the normal level of the water. It consist of non-return valve,water inlet pipe,out let pipe,spindle,gland and wheel as shown in fig. the outlet pipe of valve connected with and of delivery pipe of feed pump 10.

Chapter 55 basic boiler construction Flashcards | Quizlet

Start studying Chapter 55 basic boiler construction. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Which of the following is an

What are boiler accessories? Explain each accessories in

Apr 24, 2019 · Boiler accessories are those components which are installed either inside or outside the boiler to increase the efficiency of the plant and to help in the proper working of the plant.

ASME as opposed to NON-ASME — Heating Help: The Wall

ASME as opposed to NON-ASME Our factory makes both ASME and Non-ASME. Parts are the same on both. Only difference, we have extra paper trail for the ASME boilers. H-3s, shop inspections, signoff sheets, training records, POs to track the ASME parts. Dont forget, a color code system on all steel used in the construction of the pressure vessel.

Lancashire Boiler : Principle, Construction & Working

Mar 10, 2016 · This is the most common boiler is the Sugarnand Cotton industries. Lancashire is a horizontal, stationary fire tube boiler. This boiler is invented by Sir William Fairbairn in the year 1844.The flue gases flows through the fire tube, situated inside the boiler shell, so it is a fire tube boiler.

Water Tube Boiler Parts and Functions - Boilersinfo

Most boilers, however, are built in sections and erected on the site. Water tube boiler parts and their functions. There are many pressure parts and non pressure parts in a water tube boiler we only discuss main water tube boiler parts and function. Steam drum

Boiler Mountings and Accessories - Mechanical Booster

May 27, 2016 · A superheater is an important accessory used in the boiler. Its main function is to increase the temperature of saturated steam without raising its pressure. 3. Economiser. It is used to heat the feedwater by the utilization of heat from the hot fuel gases before it leaves the chimney. A economiser improves the economy of the steam boilers. 4. Feed pump

When does a water heater become a boiler? | 2016-01-12

Jan 12, 2016 · A water-heating device that exceeds any one of the following should be classified as a water boiler: 120 gallons (454.2 liters) nominal water storage capacity; 160 psi (1103.2 kPa) operating pressure;

Comparing Commercial Condensing Boiler Efficiencies | AERCO

The Impact of 80°F Feed Water. It is at this point (the dew point of flue gases) that boilers begin to condense – naturally extracting latent energy that is created during the combustion process. Effective condensing is capable of reclaiming as much as 12%-13% of the total energy used by a boiler.

Boiler - Wikipedia

Boilers can be classified into the following configurations: Pot boiler or Haycock boiler/Haystack boiler: A primitive "kettle" where a fire heats a partially filled water container from below. 18th century Haycock boilers generally produced and stored large volumes of very low-pressure steam, often hardly above that of the atmosphere. These could burn wood or most often, coal.

What is theDifference between boiler mounting and accessories

Feb 20, 2017 · Boiler accessories are used to improve the efficiency of a boiler ex: economizer, air preheater etc. Boiler accessories are installed to increase the efficiency of the boiler plants to help in proper working of boiler unit. Boiler Mountings and Accessories both are the essential part of Boiler. One (Mounting) is for safety purpose then another one (Accessories) are to improve efficiency of Boiler. If you don’t want to read this then You may Understand in Detail by visiting following you