Explain working of steam drum, Mechanical Engineering

Assignment Help:

Q.Explain working of Steam Drum?

Total solids concentration in the steam at steam manifold outlet shall not exceed 0.5 ppm during steady operation at MCR.  Fabricator must indicate the maximum acceptable total dissolved solids concentration in the boiler water when operating normal drum water level.

The normal water operating level in the steam drum shall be not less than 25 mm (1") below the drum center line.  In the drum, the surface area of the normal operating water level shall be sized based on 100% MCR, such that the maximum surface release rate shall not exceed 3,900 kg/m2h (800 lb/ft2h).

Water hold-up between fabricator's stated normal water level and top downcomer level shall be sufficient to enable operating at 100% MCR for at least five minutes in the event of loss of boiler feed water supply.  This resident time design shall include ramping rate of 20% MCR per minute.

The water surge volume in the steam drum shall be adequate to accommodate the resultant swell from increase in load of 20% of MCR per minute without actuating the low water level cut-off.


Related Discussions:- Explain working of steam drum

Define teh gas welding, Gas welding is a method of joining two metal piece...

Gas welding is a method of joining two metal pieces (similar or dissimilar) together by melting and fusing their edges at the joint. It involves applying intense concentrated flam

Cylinder series test, Cylinder Series Test A series of round bars of ...

Cylinder Series Test A series of round bars of various diameters are austenitized and quenched into oil or water. The bars are long sufficient hence the cooling of section at

Wire feeding unit-co2 welding, WIRE FEEDING UNIT The wire electrodes ar...

WIRE FEEDING UNIT The wire electrodes are supplied as continues coils in wire spools. The solid wires are available in the following sizes 0.8, 1.0, 1.2, 1.6, 2.0 and 2.4 mm di

Embrittlement-metallurgical defects, Embrittlement For use, at high str...

Embrittlement For use, at high strength, coupled with good notch toughness, all weld structure must  be Tempered low carbon martensite. Carbon and alloy steels having more than

Isothermal transformation, Isothermal Transformation: Austenite is no...

Isothermal Transformation: Austenite is not normally converted in martensite instantly but the procedure continues for some time. Various steels take various time for full tr

Two Stage Reciprocating Air Compressors, How does the Two Stage Reciprocati...

How does the Two Stage Reciprocating Air Compressor works?

Determine net work done, Determine net work done: 5 m 3   of air ...

Determine net work done: 5 m 3   of air at 2bar, 27 0 C is compressed to 6bar pressure following PV 1. 3   = constant. It is expanded subsequently adiabaticall

Merchant force circle diagram, (a) Draw neatly and accurately the Merchant ...

(a) Draw neatly and accurately the Merchant force circle diagram. Mention clearly the forces involved, the constructional steps and the assumptions made [do not derive the forces]

Evaluate the maximum bending stresses, Evaluate the maximum bending stresse...

Evaluate the maximum bending stresses: A beam of I-section illustrated in Figure is simply supported over a span of 10 m. It carries an uniform load of 4 kN/m over the whole s

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd