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Fire Tube Boilers!

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savree_nuggets,

savree

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hi John here in this video we're going

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to be looking at the fire tube boiler

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also known as a smoke tube boiler and

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normally in our videos what I do I run

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through things like the components the

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parts highly work and things like that

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but in this video I thought we'll take a

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different approach why don't we build a

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fire tube boiler together and that way

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we can understand why it's built the way

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it is and how it works in order to do

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this we need to be a little bit creative

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and that's why we invented the

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configurator tool now I absolutely love

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this tool and I'm going to show you what

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it does right now so here's a firetube boiler

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I'm accessing the firetube boiler

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directly through a web browser and if

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you check the video description area

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you'll be able to access this freely

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model through your web browser as well

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you just click on the link provided so

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what is the configurator and why is it

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so good well let me show you here's our

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configurator as you can see there are

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some names here on the right-hand side

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and there's an eyeball and if we cross

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out the eyeball we'll be able to hide

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and show different parts of the boiler

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let me show you how that works let's

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take a cross-section first so we can see

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here we can see inside the boiler and

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we've also got some arrows and the

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arrows are going to allow us to see the

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direction that the exhaust gas is

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passing through the boiler if we go back

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to our full view we can remove parts

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like the cover for example and if we go

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down we can remove the shell and then we

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can have a look at some of the parts

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inside the boiler maybe we'll go down a

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little bit further we can move some of

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these tubes they're kind of in the way

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maybe we'll get rid of some more tubes

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and we can actually see what's going on

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inside the boiler so the configurator is

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a pretty cool tool in fact it's probably

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one of the best things about severy and

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the thing I like the most so check out

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the link in the video description area

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and you can do everything on doing

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direct for you

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web browser and it's really going to

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help you to learn but as I said before

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what we're going to do is build a boiler

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so let's just reset the configurator for

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a moment and we've got our fire tube

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boiler here like I say it's also known

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as a smoke tube boiler we are going to

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do a video for a water to boil it but

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that's going to come a little bit later

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so let's go up to the top in fact if we

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go back down we can reverse everything

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and we can see that we've actually just

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got an empty space so in my factory I've

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got this empty space and I want to build

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a boiler there so the first thing I need

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to do is to add some supports so I'll

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mark out the area where I want to build

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the boiler so there it is this red frame

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next thing I should do probably is to

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add a shell but actually put the cover

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around the shell with cover is sort of

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like insulation and the cover would go

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around the shell so let's just do that

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for a moment I'll take it off in a

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second so we've got the cover around

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it's normally a bit thicker than what

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we're seeing here and the idea with

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cover is that we insulate all of the

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shell in order to trap the heat inside

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the boiler or as much of it as possible

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we don't lose the heat because we're

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paying money for combustion of the fuel

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and things like that

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which we're going to learn about in a

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moment so we'll insulate the shell and

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consequently the boiler so we've got a

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shell we're going to fill this up with

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water you can see idea where the boiler

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is that we can burn some fuel and we can

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heat up some water and we can turn that

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water to steam so let's imagine for a

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moment we try and fill up the shell well

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that's not gonna work out too well for

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us at this present moment because the

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water is just going to run out of the

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shell so let's start thinking about what

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else we can add here we're gonna need a

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burner we're gonna need something to

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create combustion we're gonna be burning

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things like light fuel oil and gas so

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let's add a burner okay so the burn is

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there I've got a bit of a problem now

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because if we were feeding fuel into the

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burner and we're also feeding in air

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in order that we can have combustion

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remember you need he fuel an air or heat

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fuel and oxygen in order to get

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combustion that is a fire triangle so

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feed all of that in then we've actually

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just got it going into our shell and

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that's full of water well not really

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because it's leaking quite a lot but

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this isn't really gonna work out very

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well for us so let's add some more parts

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here for a moment we'll add a corrugated

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furnace and we've still got a bit of a

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gap here so let's see what else we can

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add here maybe we go down that's

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something called a smoke box we've kind

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of filled the gap up a little bit now

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we've added two ends onto our cylinder

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they go got another end here this is

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actually the smoke box on the end here

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we'll discuss that in a moment if we go

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down here okay so we seal off the

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furnace so we've got our fuel going to

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the burner we've got air being drawn

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into the burner and will ignite the fuel

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and we can then have combustion in the

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furnace which is gonna be this area here

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this is actually a corrugated furnace

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let's take away the shelf for a moment

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so you can see it's got quite a unique

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shape long and cylindrical and this is

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known as the corrugated furnace as they

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should just go inside for a moment we

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can have a look so we are inside I've

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got a burner down the end we're gonna

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have combustion in this space here so

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we're gonna have a flame it's gonna be

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burning around here and the exhaust gas

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is then gonna be pushed further away

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from the burner so we're travelling away

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now if I go out I've actually just came

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out of the boiler but we'll get to the

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end of the corrugated furnace and then

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we've got the same problem as before

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we're just sort of ending somewhere in

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our shell and we're surrounded by water

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again okay so that's not very good let's

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add a reversal chamber or reversing

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chamber and you can see we've sealed off

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that area now the exhaust gases are

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going into reversal chamber and then

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what's happening well if we zoom out

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can I run the other side it's actually

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sealed on this side as well there are no

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holes or anything the only place where

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there are holes are on this side here so

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we've got the holes and they're coming

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out of the reversal chamber but now what

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well that's still not very good we're

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still just gonna end up with a lot of

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water splashing around because remember

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our shell which seals the whole thing in

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should be full of water let's get rid of

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that shell again so now what we need to

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do we need to get the exhaust gas from

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here from the reversing chamber the

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reversal chamber and we need to get it

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out through the smoke box actually see a

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connection here that's going to connect

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to a chimney and in order to get that

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exhaust gas to the smoke box on the end

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we're gonna have to send it from the

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reversing chamber all the way over to

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the opposite side so let's do that I'm

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gonna need to add some tubes here this

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is why we call it smoke tube boiler or

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firetube boiler because we're literally

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sending the smoke through tubes in the

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boiler the water tube boiler as the name

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implies has tubes that are full of water

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and the smoke tube boiler has tubes that

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are full of smoke or exhaust gas so

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let's add our tubes okay so the exhaust

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gas is coming out of the reverse and

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chamber coming along here from right to

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left and then once again we're going to

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hit loads of water right so let's solve

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this issue we need a front tube sheet so

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there's our front tube sheet and now

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we've got the exhaust gas coming out of

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these holes here and also in this

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section here and we need to turn that

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exhaust gas around and send it back

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through these holes here on the outside

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now normally if we add some inspection

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doors we can seal off this section here

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and we can seal off the smoke box which

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is this section here we can't really see

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much when we add the inspection doors or

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inspection hatches so let's just remove

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those again so the exhaust gas is coming

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out of these tubes here and then we're

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going to try and turn the exhaust gas

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and send it back through the tubes here

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unfortunately at the moment we don't

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have any tubes so let's add those tubes

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in right now

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third smoke tubes okay so we've got the

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exhaust gas on the Left it's traveling

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now to the right way to the smoke box

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here and then we've got another problem

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these tubes are not really sealing with

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the smoke box very well at the moment so

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let's go down here and what I was

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actually looking for was a back to be

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sheet normally I refer to this as a rear

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tube sheet but here it's a back tube

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feet and as you can see we've sealed off

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those tubes now and the exhaust gas is

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going to flow out of these tubes the

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third pass of tubes it's going to come

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into the smoke box and then if we angle

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this correctly it should be able to see

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where the exhaust gas exits and it's

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going to go through the exit at the top

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here spin around and go to the chimney

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and to a stack so we've got rid of the

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exhaust gas and as you may have noticed

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it passed three times through the water

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that would be within the boiler so this

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c3 pass boiler let's look at the first

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pass we go from the burner along the

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furnace to the reversal chamber and that

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is one pass well then add a second smoke

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tubes the exhaust gas comes along here

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and that is a second pass well then add

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a third smoke tubes and we have a third

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pass which goes left to right and then

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the exhaust gas has transferred a lot of

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that heat to the

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water which is going to turn some of the

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water to steam and the steam is going to

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collect at the top of the shell the

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entire shell is not full of water the

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water level would actually be somewhere

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around here we want to submerge all of

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the tubes in water and we want to make

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sure they're totally immersed in water

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and that at no point does the water

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level reduce to a point where the tubes

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are not covered in water if the boy is

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in service and this hot gas flowing

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through these tubes the tubes have to be

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submerged or immersed in water otherwise

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you've risk

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fracturing tubes or breaking the tubes

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and you may have a boiler failure let's

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add the shell again because I just want

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to show you how the boiler looks and it

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has a bit more of a simple construction

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so we can add the shell let's just take

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off a few bits and bobs for a moment we

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know about the burner we know we need a

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source of combustion let's take off the

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ends and you can see we've actually got

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quite a simple design now it's just a

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long cylinder more or less so we've got

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a cylinder we fill up the cylinder with

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water we've sealed the exhaust gas

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system so it's not going to mix with the

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water and once we fire up the boiler we

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allow the exhaust gas to pass through

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the furnace and the tubes etc then we'll

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transfer the heat to the water and we

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will turn it to steam but as you can see

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the boiler design is relatively simple

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when we break it down into its major

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components but let's just reset

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everything for a moment we'll take a

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cross-section so we can see some of the

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arrows we can actually just go inside

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that boiler a little bit here we can see

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that the furnace the corrugated furnace

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is here the red arrows are going left to

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right the red arrows will then reach the

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reversal chamber which if we angle this

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correctly we can probably see there's

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the reversal chamber here we'll spin the

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exhaust gas around send it back the

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other way

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and then when it gets to the other

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reversal chamber at the opposite end

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we'll spin it around once again we've

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come around this way we can actually see

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that occurring you can see the exhaust

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gas comes out of these in a second pass

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tubes so those ones here will spin it

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around send it into the third pass tubes

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on the outer periphery of the boiler or

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closer to the shell and then as we can

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see it comes left to right so left to

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right for the corrugated furnace right

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to left from the reversal chamber to the

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other reversal chamber and then left to

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right again all the way to the smoke box

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and if we go along here we should be

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able to see that and see the tubes

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connecting here they're going through

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the rear tube sheet into the smoke box

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and then the exhaust gas will exit to

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the chimney so that's essentially our

00:14:17

firetube boiler works

00:14:24

I hope you enjoyed this video I hope you

00:14:28

enjoyed having a look at our new

00:14:30

firetube boiler I hope you enjoyed the

00:14:33

configurator tool I think that's one of

00:14:35

the best things we've got unsavoury at

00:14:37

the moment and I really do encourage you

00:14:38

to go and check out the link in the

00:14:41

video description area click on that

00:14:43

link you can do exactly what I'm doing

00:14:46

now on your smartphone on your PC on

00:14:49

your laptop on your Apple Mac whatever

00:14:51

and if you're using this tool and you're

00:14:53

watching this video then you really

00:14:55

should be able to understand exactly how

00:14:57

a fire to boiler works and that's what

00:15:00

we're all about sub recom we want to

00:15:02

give you the tools that you can use to

00:15:04

learn about engineering effectively and

00:15:06

I really do believe this is one of the

00:15:08

best tools out there so check out the

00:15:10

link if you've got any comments about

00:15:13

this video maybe you've got some

00:15:15

suggestions of what we can do next

00:15:17

maybe you visualize in your mind that we

00:15:19

can use a configurator for things like

00:15:20

electric motors heat exchangers turbines

00:15:24

whatever add your comment to this video

00:15:27

and I can guarantee you that we will

00:15:29

read these comments and we really do

00:15:31

appreciate your feedback if you like

00:15:33

this video then please do share it on

00:15:35

social media or subscribe to the YouTube

00:15:38

channel and if you want to learn more

00:15:40

about engineering related topics then

00:15:43

we've got over 30 hours of engineering

00:15:45

video tutorials much like this one

00:15:48

so check out links in the video

00:15:50

description area I'll paste a coupon

00:15:53

into the video description area as well

00:15:55

so check all those links out use the

00:15:58

coupon if you decide to sign up for any

00:15:59

of our courses and I hope to see you on

00:16:02

another video lesson very soon thank you

00:16:05

very much for your time

Description:

Want to continue learning about engineering with videos like this one? Then visit: https://courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: https://savree.com/enen ****************************************************************** Learn about fire tube boilers! This video will introduce you to the fire tube boiler and how it works. We also discuss its main parts and their functions. Don’t forget to subscribe! 😊 Like this video? Then check out our other videos! 🚢 Marine Diesel Two Stroke Engine - How it Works! - https://www.youtube.com/watch?v=IM8rxp8qB8k 🚢 Ship Parts and Terminology Explained! - https://www.youtube.com/watch?v=Xm-F2rPU_NU ⚙️How Deaerators Work! - https://www.youtube.com/watch?v=M_jOsTWVIH8 ⚙️How Shell and Tube Heat Exchangers Work! - https://www.youtube.com/watch?v=OyQ3SaU4KKU ⚙️How Power Grids Work! - https://www.youtube.com/watch?v=fUWRyhsutL8 ⚙️How Watertube Boilers Work! - https://www.youtube.com/watch?v=fUWRyhsutL8 ⚙️How Dams Work (Hydro Dams)! - https://www.youtube.com/watch?v=ztM6tL6LtFs 💡Control Valve Types (Gate Valve, Globe Valve etc.)! - https://www.youtube.com/watch?v=OyQ3SaU4KKU 💡Transformer Parts and Functions! - https://www.youtube.com/watch?v=3osmO4FQ2Yg 💡Plate Heat Exchangers Explained! - https://www.youtube.com/watch?v=7TTF4aU3Pcs 📚Want to learn more about engineering? Then join saVRee to access over 45 hours of engineering video courses! New courses every month! https://courses.savree.com/ Hope to see you on a course soon! 👋 🏫Want to use the 3D model in this video to present, instruct, or teach? Simply join saVRee! We have over 400 engineering models that will make your life a lot easier! https://savree.com/ 📱Check out our socials! https://linktr.ee/savree 📖You can learn more about engineering in our technical encyclopedia: https://savree.com/en/encyclopedia ▶️Introduction Fire tube boilers are used for many industrial processes to generator steam. They are one of the two common boiler designs commonly employed today, the other design being the water tube boiler. The boiler shown in this video is a three pass boiler, as the gasses pass three times through the boiler shell. How Fire Tube Boilers Work Fuel is fed by a burner into a corrugated furnace along with air. The air and fuel mix and a source of ignition is applied in order to start combustion. The heat from the flame and exhaust gases is passed to the corrugated furnace, then to the water due to thermal conduction. The exhaust gases then pass through a reversal chamber, the second pass of tubes, the third pass of tubes, then finally through a smoke box and out of the chimney. The furnace and tubes allow the heat generated by combustion to be transferred to the water in the shell. As the water in the shell is heated, it begins to turn to steam. Fire tube boilers rely upon on relatively few parts, these parts include: * Shell – fired pressure vessel. * Burner – used for combustion. * Corrugated Furnace – where combustion occurs. * Tubes – used to direct exhaust gasses through the shell. * Tube Sheets – used to hold the tubes in position. * Reversal Chamber – gasses are reversed in this space and sent back in the opposite direction. * Cover – retains insulation which increases the thermal efficiency of the boiler. * Smoke Box – located where exhaust gasses exit the final tube pass, but before the chimney.

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How can I save a frame from a video "How Fire Tube Boilers Work (Industrial Engineering)"?

This feature is available in the UDL Helper extension. Make sure that "Show the video snapshot button" is checked in the settings. A camera icon should appear in the lower right corner of the player to the left of the "Settings" icon. When you click on it, the current frame from the video will be saved to your computer in JPEG format.

What's the price of all this stuff?

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