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Water-Holding Capacity of Boiler

05/29/2017 9:56 AM

Dear Members,

Is there any thumb rule for the calculation of water holding capacity of a water tube AFBC boiler of 40TPH

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#1

Re: Water Holding Capacity of Boiler

05/29/2017 11:13 AM

Atmospheric fluidised bed combustion boilers - AFBC boilers

http://www.dtic.mil/dtic/tr/fulltext/u2/a262952.pdf

http://knowledgeplatform.in/wp-content/uploads/2017/03/2.6-FBC.pdf

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#2
In reply to #1

Re: Water Holding Capacity of Boiler

05/29/2017 11:46 AM

thanks for your participation, but sorry to inform you that you didn't answer my question. That is because, I asked for the water holding capacity of the boiler.

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#3
In reply to #2

Re: Water Holding Capacity of Boiler

05/29/2017 12:14 PM

The only people that can answer that are the ones who designed and built it.

To ask us on some forum is about as rational as me asking you how much water does a unspecified tank and related piping system in my shop hold.

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#4
In reply to #3

Re: Water Holding Capacity of Boiler

05/29/2017 1:29 PM

What? You mean to say that you cannot answer such a question.

hat is surprising...

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#5
In reply to #1

Re: Water Holding Capacity of Boiler

05/29/2017 2:44 PM

Post 3 is right. Only for reference

http://bondwater.com/wp-content/uploads/2012/01/boiler_holding.pdf

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#6

Re: Water Holding Capacity of Boiler

05/29/2017 11:21 PM

The world is complex, grasshopper.

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#7

Re: Water Holding Capacity of Boiler

05/30/2017 4:30 AM

Yes, there is. As a rule-of-thumb, the best thing to do is to pick up the phone and talk to the boiler manufacturer directly, because no-one else at CR4 is going to do that.

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#8

Re: Water Holding Capacity of Boiler

05/30/2017 5:09 AM

Post 5 gives a chart for fire-tube boilers of one mfr. From it, one can derive a rule-of-thumb for that kind of boiler. Similarly, one could get some data on water-tube boilers and construct a similar rule-of-thumb, maybe somewhat more water than in a fire-tube type [?]. It just takes a little reverse engineering.

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#9

Re: Water Holding Capacity of Boiler

05/30/2017 8:21 AM

Dear Subhobayer,

The water holding capacity of boiler is generally 80% of the capacity of the boiler in Tonnes/Hr.

Prior to 1970s, the water holding capacity of the boiler was 180% to 200%.

Low reserve will respond very quickly for load fluctuation.

Dhayanandhan.S

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#10

Re: Water Holding Capacity of Boiler

05/30/2017 1:54 PM

For all the info you provide my rule of thumb to you. Is to drain it into a bucket and count how may times you have to empty the bucket. Them multiply the number of buckets by the bucket's volume.

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#11

Re: Water Holding Capacity of Boiler

05/30/2017 4:40 PM

Use its mechanical general arrangement drawing and break it down into simple 3-dimensional shapes. Then, having used something akin to Kempe's Engineers' Yearbook, any edition, for the formulae of shapes, calculate the volumes of the individual shapes, and summate them into a whole.

It has got to have a mechanical general arrangement drawing! After all, whoever heard of a boiler without a construction drawing for the insurance company to assess?

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#12
In reply to #11

Re: Water Holding Capacity of Boiler

05/30/2017 6:46 PM

" After all, whoever heard of a boiler without a construction drawing for the insurance company to assess?"

Insurance assessment based on actual engineering criteria? They gave that up years ago.

Now it's if it could generate one claim in its working lifetime it's considered a high risk.

Two is ultra high risk and likely going to be disputed on what can be claimed which will typically be nothing and the deductible will be at least 2x the value of the property and everything on it.

Three is totally uninsurable.

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#13
In reply to #12

Re: Water Holding Capacity of Boiler

05/31/2017 3:56 AM

Whatever.

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Users who posted comments:

dhayanandhan (1); Mikerho (1); North of 60 (1); ozzb (1); PWSlack (3); subho_bayer (1); tcmtech (2); Tornado (1); Whitephone (2)

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