Heating Surface Area of Fire Tube Boiler

Over what period of time
That is what i am trying to find out. Mostly we work on per hour basis. But definitely that's not the answer.

I hope this is just a Homework assignment, all done on paper or a CAD modeling. And, if you do prototype your design, I would highly recommend surrounding your boiler with a ballistic material for personnel safety until all safety features are thoroughly tested.

Nope! We make it happen in real life i am an engineer in a boiler mfg. company. Working on design modifications.

Nope... 7 lbs/per square foot is just right. Use that number for all of your boiler designs !!!

I have a few questions.....

- Is this the first boiler you have designed ?

- Will your boiler have safety valves ? If so will you also be designing them ?

- How about low water cutouts ?

- What will be the distance between your boiler and the nearest occupied building ?

- Is there anyone in your company to whom you can ask questions ? ( your MBA boss doesn't count)

Actually not designing completely. Modifying rather.

- Yes 1st Boiler

- We are using a conductive probe system consisting of 4 Probes (Indicating water levels at HH,H,L and LL). At 'L' there is an alarm and at 'LL' boiler get cut off from heat source. But still there's enough water to prevent the tubes from getting damaged while they are cooled.

-Boilers are used placed in Boiler Houses. That depends! if we are going for a WHRB that needs to be placed near the Generator exhaust.

- Obviously, our Most respectful "Manager".

i forgot one!

-It has 2 safety valves. Surely they are also designed as per ASME SEC I (PG-67).

How can you design a boiler when you are not authorized? You want to design rule of the thumb??? 1 sft is not 7 lbs it is 6.9 lbs/hr as per ANSI standards of 1 BoHP = 34.5 lbs/hr steam and 5 sft/BoHP. This is 10 lbs/hr as per British standards and 8.3 as per German standards and 8.2 as per Italian. Go buy the standard's Book first. Then go to your Boiler Office to apply for a license first to make Boilers. Do you think it is child's play?

Mr.Anul Hassan - You seem to have disappeared. FYI my elder brother Mr.Kashaf Duja and co-proprietor DUCON Energy Management Systems (who is highly regarded as a thermal expert & computer wizard by your CEO) centralized all Greshams Eastern manufactured Models & Types of Boilers & Ancillaries on the data bank of your H.O PC as:

1. For each type Firetube/ Watertube Boiler/etc (computerzed in separate folder) all different parts As Built Drawings Folder can be opened by anybody and have all as built drawing for manufacturing.

2. Simultaneously all as built drawings for separate take-off parts (required BOQ) is also indicated for Workshop & Stores.

3. For Stores all required items incoming Imported/Local is scheduled.

4. Critical Path Method for all workshop is given for all manufacturing as regards time/man power required for manufactured Boiler/s concerned.

5. In a way that if a Boiler was ordered by a Client all Design-people (even a 13 month old like you) has to enter the as built folder, take off the BOQ and inform Stores of items in-hand as per schedule.

6. The manufacturing Department will coordinate with the Design people and Stores and complete/manufacture the required Boiler/s accordingly as well as give exact tentative date of delivery.

7. The HO Stores can also calculate the days of man power/materials/imported or local parts with Total cost (actual) of imported/local parts relate to each Boiler/s.

For Example:

For one type of Boiler/Model, separately in one folder :

As built Drawings/man power/parts/time etc:

a. Economizer.

b. Stand

c. Shell

d. Heat Exchanger

e. Pipes required/size/numbers.

f. Burner.

g. Deaerator

etc. etc.

We/Ducon are your Software Designers that you simply sit and click to get all results on all Boilers under manufacturing yet with just 13 months of experience, a fresh off-the-boat 2010 engineer dares to be so arrogant with no respect. Please ask your Mr.Desmond/ your CEO Mr.Suhail Hussain our technical background before you ever do the same with any other person.

We CR4 Members respect each other and do not like this attitude since we have not asked you to solicit with us in the first place.

PS

- "Obvioulsy, our most respectable " Manager"."

You need not be sarcastic about Mr.Nasir . He has been with Greshams over 3 decades and considered as one of the finest Boiler manufacturing-engineer . His experience alone is far more than your age. I respect and regard him as a mentor too.

I feel you have had enough and more than you can ever chew. You just rubbed the wrong edge in your arrogance.

You seem a little steamed there ducon. Pressure relief valve having a hissy fit and all....

Anul has upset you somehow and I didn't see where or why.....

If, as you say We/Ducon are your Software Designers.... then doesn't that make Mr Anul Hassan (aka Sir) your customer? Just asking.....

Sometimes a customer "needs to be told" but there is a limit.

Relax, take a deep breath, exhale slowly, repeat..... be excellent to each other.

Last line on the Thread # 9 made me mad . We work as associates . To me he is just a junior employee as an associate. Txs. i am relaxed now.

Hello Bro!

Dear Mr.Ainul Hassan

The data given by you, i.e. "1 sq ft of area is required to produce 7 lbs of steam" IS CERTAINLY VERY HIGH - leading to problems.

It will be in the order of 5 Lbs. per Sq.ft. There are plenty of CR4 Members who will be giving their views.

STANDARD PROCEDURE means you have to go by the EQUATIONS INVOLVING HEAT FLUX, LOG-MEAN TEMPERATURE, THERMAL CONDUCTIVITY, GRASHOFF NUMBER, etc.

DHAYANANDHAN.S