Jun 05, 2018· Comparison between Fire Tube and Water Tube Boiler can be done in 14 aspects. Those aspects are operating pressure, passage of material type in tubes, rate of steam generation, handling of load fluctuation, floor area requirement, efficiency, operator skills, design, maintenance cost are listed below in the tabular form.
Nov 24, 2016· Fire Tube boiler is the simplest form of the internal furnace, vertical fire tube boiler.Fire tube boilers are a portable boiler and it requires a small floor space. The steam rating in fire tube boilers doesn’t exceed 2500 kg per hour and pressure is limited to 10 bars.
1 Control Room Boiler Operator Shift Supervisor. Supervised start up, shut down, and daily evolutions of Union Iron Works 110,000 lb/hr water tube fixed grate stoker Biomass boiler, Foxboro Controls 760/761 single loop controllers, and two 80,000 lb/hr 600psi oil boilers.
The cost of the equal fuel equivalent to wasted energy by these losses is given by: (11) C sl = m ˙ g C p g (T g, out, eco − T atm) H η Boiler × L H V C f where LHV is the lower heating value of natural gas, H is the number of working hours of the HRSG in a year and …
May 22, 2015· Such fires do, however, occur in finned tube exhaust gas heat exchangers and boiler economisers, where the source of heat is flue gas with a temperature much too perchance during a soot fire; the unit concerned is not being circulated, the intense heat of the soot fire, rich in carbon, may initiate a hydrogen fire and that this, as in the case
Maintaining a good flame in a boiler is the key to a good boiler performance. Unstable flame is always a threat for boiler furnace explosion, which can lead to a large outage of boiler and loss. There are many causes that can contribute to boiler flame failure. Hence it has become a practice of all boiler designers to interlock purging the boiler with boiler start-up.
What is a water tube boiler? Water tube boilers were developed for a variety of reasons, including the need for higher steam pressures, higher steam generation rate, superheated steam. these types of boilers have quicker response to load changes. We briefly discuss about Water tube …
steam boiler mcq questions | Low cost of boiler supplier. Control the flow of steam from the boiler Steam Generators – Power Plant Questions and Power Plant Questions and Answers – Steam A fire tube boiler occupies less space than a water tube boiler, for a given power. c) Steam at a high pressure and Steam boiler objective . Get A Quote
Steam boiler | Steam boiler Objective Type Questions and answers. 16. Which of the following is a water tube boiler.. A. Locomotive boiler B. Cornish boiler C. Cochran boiler D. Babcock and Wilcox boiler
Mar 22, 2013· Do not use this on cast iron, straight water tube, or fire tube boilers without using the previously mentioned thermal shock prevention techniques. (Individual boiler circulation pumps with blending valve to allow for slow warm-up.) Provide boiler stack dampers to …
Watertube Boilers Learning Outcome When you complete this module you will be able to: Describe various watertube boiler designs, including large generating units. Learning Objectives Here is what you will be able to do when you complete each objective: 1. Describe early designs and construction of watertube boilers. 2.
May 04, 2017· Water Tube Boiler: * Water circulates in tubes and heated externally by hot gases. Fuel is burned inside the furnace. i.e (hot gases- outside the tubes and water- inside the tubes). * Operating pressure = upto 100 bar * Efficiency = upto 90% * Ste
8. Blow off cock in a boiler is used to (A) Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required (B) Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler (C) Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
12. The difference between cornish boiler and lancashire boiler is.. A. Former is fire tube type and latter is water tube type boiler B. Former is water tube type and latter is fire tube type boiler C. Former contain one fire tube type and latter contains two water tube type boiler D. None of the above
The design of the current boiler products has been in place for well over 30 years. However, both market conditions and a demand for furnace chambers that will be compatible to low NOx combustion systems have resulted in a need for new, innovative firetube boiler design. Click here to learn more about the advantages of firetube boilers. The…
Package Boiler. Packaged boiler is the most common and efficient type of fire tube boiler used in industry to produce steam and hot water. This boiler delivers to site as a whole package factory assembled. The package boiler only requires electricity, water, steam and fuel connections and it …
Firebox—the area of a boiler where the burners are located and where radiant heat transfer occurs, p. 296. Fire tube boiler—a device that passes hot combustion gases through the tubes to heat water on the shell side, p. 298. Igniter—a device (similar to a spark plug) that automatically ignites the flammable