Great presentation, clear audio, no music, no fireworks. I operated boilers just like this at the Minneapolis Public Library as an Operating Maintenance Engineer. We had 2 tandem Orr & Sembower 150 HP gas/oil fired units.
I am not involved in any related field. But it is great to watch videos like this and attempt to grasp how much knowledge is out there and how much work is put out to keep this country rolling. I can't imagine how much of a knowledge base is inside the heads of the people that engineer, make, maintain and run these boilers. Thank you for all you do!
Boilermaker was one of the most important and respected trades that actually kicked off the industrial revolution. It is a rare but niche industry today. Steam power has been mostly replaced by other technologies, however it is good to see that it still has important uses and how much it has innovated with exotic metals and manufacturing methods, but the basic design still remains the same after a couple of centuries.
Fascinating stuff and it is good to see how some of our oldest tech has still got valuable and important uses in industry and other places. Thanks for sharing.
Hi, i am going to take courses of Power engineering class 5 this coming month (March), and your video is really help me to understand how the boiler works. I am so happy finding your channel and i subscribed it righ away. Thank you so much.
I looked this up specifically after watching a “Fascinating Horror” video on the sinking of the Sultana disaster. The narrator mentioned “fire tube boilers” and I realized I had no idea what this meant. Or the term “running dry.” I suppose that would mean there is a leak, or it’s burning way too hot or the pressure is lost and allows the water level to turn into steam I guess?
I know this is a year after you've posted this, but you might still be curious. haha You can see on this video that the water level stays above the tubes that have the fire in them, the fire being the heat source and the water being the heat sink. The water traveling out of the boiler to (in the case of the Sultana) power the steam engines that turned the wheels is what keeps the boiler from getting too hot or have too much pressure. The metallurgy of the boiler materials would be designed to withstand only a limited temperature and limited pressure, and that temperature and pressure was maintained by the flow of water into and steam out of the boiler. An upset in either of those without the fire being removed would quickly exceed the design pressure and temperature of the boiler. So, from watching the Sultana video, it mentioned that one of the boilers had developed a leak before they picked up their passengers. The captain and the quartermaster had chosen to "Band-Aid" repair the leak because that would let them get underway to get their big payday. The other thing that probably added to the problems was they overloaded the boat, which would, I expect, cause problems with list and trim of the boat. Those variations in list and trim would affect the water level in the boiler, which is what keeps the boiler from over-heating and over-pressurizing, and, ultimately, exploding. Anyway, so if they lost water in one of the boilers and the fires stayed in, two things would happen. The metal temperatures would increase since it had insufficient amounts of flowing water to cool it, and it would exceed the design temperature of the metal. Additionally, the steam pressure in the boiler would increase, as the limited amount of water would continue to absorb the heat put out by the fires, increasing it's pressure above the design pressure of the boiler. And that is what probably caused the explosion, which the video then said damaged the other three boilers and caused them to explode, as well. Anyway, so that's my guess on what happened. There are a LOT of NFPA (National Fire Protection Agency) regulations in place on boilers, now, to prevent anything like that, but they simply didn't exist back then.
Came here because I live in old gold mine country in California. Someone asked about an old style tubular boiler that looks a lot like this and what the holes were for. I wonder if the technology is essentially the same just improved for safety and efficiency.
Hi Guys. I have an interest in steam engines. It is said that steam can do more work than compressed air, because of its ability to keep expanding in a cylinder once the inlet valve has closed. I would like to see some physical proof of this through experimentation. Something like have a boiler humming away at say 50 psi and a compressor charged up to 50 psi and do something with each to see how they compare. You might have to be a bit creative with your experiment designs, but this should be right up your alley. I offer you this challenge and look forward to seeing the results
I apologize for not getting back to you quickly but I had to do a bit of research on this one. End of the day 50 psi is 50 psi no matter what is creating the pressure, steam or air. The difference is the process usage. With steam you have the added energy of the heat which you can use for process. So in terms of pressure, 50 psi is 50 psi but the other characteristics is much different. Hopefully that answers you question! Thanks for the question!
Thank you for the response. However it just got me thinking a bit more. Consider the following scenario and let me know your thoughts. Let's have 2 identical pressure containers. For example 2 x 9 kg LPG bottles. Empty of any gas.Fit them both with an inlet/outlet tap and a pressure gauge. Now fill them both with the same amount of water, say 5 litres. That would make the tanks about half full. Now one of the tanks gets connected to an air compressor and filled to safe pressure. Say 50 psi. Close the inlet valve, and put it aside for now. The other tank has its inlet closed and is now put on top of a fire until the pressure gauge reaches 50 psi. It is then removed from the fire and placed next to the first tank. So now we should have two identical tanks containing 50 psi of pressure. The only difference is that one is hot and the other is not. Now open the outlet valves simultaneously and let them vent. What do you think would be the result of such an experiment? Would you be interested in trying it. Thanks again.
@@gasonthebrain3738 Your scenario is no question but the tank with the hot water at 50 psi will generate or give pressure, maybe not 50 psi, for almost as long as there is water in the tank because it wants to go to steam or gas. This is the exact description and basis of a fireless steam locomotive(look them up in Wickipedia). Instead of a boiler, a fireless locomotive has a very heavily insulated pressure tank that is filled almost to the top with heated steam and water at a pressure of 175 to 200 psi, a charge, which is drawn off through a regulator which reduces the pressure to around 50 or 60 psi which is used to power the pistons in the cylinders to move cars. As steam is used the water level slowly goes down until the pressure approaches the needed cylinder pressure needed then the tank is charged again. These types of locomotives were very common in chemical and munitions plants where fire is a BIG NO NO.
Exactly that. We have large louvers that are on the boiler that works as intake air in the boiler. Thanks for watching and hopefully that clears it up!
Excellent video. Can anyone tell me please why the lower feedwater pressure helps in improving efficiency. If this is true than why to use boiler feed water pump. Thanks.
Pressure that the boiler operates at is dictated by the demand and process requirements. Higher the pressure = Higher the temperature. The feed pump pressure is what is required to put the water into the boiler (having to overcome boiler pressure). You lose efficiency due to the steam temperature being closer to the higher stack temperature (as the steam temperature gets closer to the combustion temperature less heat transfer can occur.) Hopefully that helps! Thanks for watching
Thanks for the comment! So water boilers at 212 degrees at atmospheric pressure. When you run a deaerator, it will increase the feed water pressure. This allows the water to be at a higher temperature and still not boil. Watch this video ruclips.net/video/W6iywW0z_eY/видео.html Hopefully that helps!
I’m assuming that water has to be pumped in at the same rate that it turns to steam, does the water pump have to overcome the pressure built up by the steam? I mean, if you’re making 250# of steam, does the water pump have to push in at over 250#? If that’s the case, is there a ratio, like the water pump has to pump in at twice the pressure or is it just a volume thing? Thanks guys.
Thanks for the comment! Firetube Boilers are rated in boiler horse power. So when we say 250 horse power we are referring to the power of the boiler and it's steam output. Hopefully that helps! As an aside watertube boilers are normally rated at pounds per hour instead of bhp.
Hey y'all I'm working on a pressure washer that is currently powered by an air compressor but I thought it would be really cool to do this with steam instead of compressed air do you have any thoughts on this?
Sorry, but if you understand the steam tables a higher pressure will be more efficient than a low pressure. This could explain the use of 3600 psi steam in electric power stations.
Thanks for the question! The tubes inside of a firetube boiler are made out of a carbon steel. That metal can withstand all of the hot gases as well as pressures that can be inside of a boiler. You can watch this video ruclips.net/video/u7UQKNapTBE/видео.html to learn more about the tubes.
The tubes do come in direct contact with the water which is why the makeup water treatment is so important. Take a look at this video ruclips.net/video/uWX_1EWSmO0/видео.html to learn how the water softener works to treat the water.
Good presentation and I hope nobody trips over those tilted up forks on the lift behind the guys, and gets a concussion or something worse. just sayin!
We tend to only work on industrial and commercial boilers. I would bet that the concept would mostly the same but might be different "got-chas". Thanks for the comment!
@@wareboilers Steam locomotive boilers are once through with the fire in the firebox then through the tubes and out the stack. Fuel may be wood, coal, or oil(diesel). The firebox is surrounded by steel and a water jacket of several inches held together with stay bolts.
Three-pass boilers are becoming more of the industry standard as time goes on. Four-pass was originally more common but this has slowly been taken over by three-pass. Thanks for watching and commenting!
Hello İ am a fresh graduated mechanical engineer in Turkey. İ am on a project that has skoc boiler calculations. For instance Sheet thickness, pipe diameter... İs there any one to help me in this process. Thanks
Great presentation, clear audio, no music, no fireworks. I operated boilers just like this at the Minneapolis Public Library as an Operating Maintenance Engineer. We had 2 tandem Orr & Sembower 150 HP gas/oil fired units.
I am not involved in any related field. But it is great to watch videos like this and attempt to grasp how much knowledge is out there and how much work is put out to keep this country rolling. I can't imagine how much of a knowledge base is inside the heads of the people that engineer, make, maintain and run these boilers. Thank you for all you do!
We appreciate the comment and thanks for watching!
Boilermaker was one of the most important and respected trades that actually kicked off the industrial revolution. It is a rare but niche industry today. Steam power has been mostly replaced by other technologies, however it is good to see that it still has important uses and how much it has innovated with exotic metals and manufacturing methods, but the basic design still remains the same after a couple of centuries.
Fascinating stuff and it is good to see how some of our oldest tech has still got valuable and important uses in industry and other places.
Thanks for sharing.
As a cleaverbrooks rep technician, your videos are awesome
Thanks for the shout out! Glad you like them and thanks for watching!
Hi, i am going to take courses of Power engineering class 5 this coming month (March), and your video is really help me to understand how the boiler works. I am so happy finding your channel and i subscribed it righ away. Thank you so much.
Glad we could help. Thanks for watching!
Sir please make videos on operation and maintenance of the fire tube boiler
I looked this up specifically after watching a “Fascinating Horror” video on the sinking of the Sultana disaster. The narrator mentioned “fire tube boilers” and I realized I had no idea what this meant. Or the term “running dry.” I suppose that would mean there is a leak, or it’s burning way too hot or the pressure is lost and allows the water level to turn into steam I guess?
I know this is a year after you've posted this, but you might still be curious. haha
You can see on this video that the water level stays above the tubes that have the fire in them, the fire being the heat source and the water being the heat sink. The water traveling out of the boiler to (in the case of the Sultana) power the steam engines that turned the wheels is what keeps the boiler from getting too hot or have too much pressure.
The metallurgy of the boiler materials would be designed to withstand only a limited temperature and limited pressure, and that temperature and pressure was maintained by the flow of water into and steam out of the boiler. An upset in either of those without the fire being removed would quickly exceed the design pressure and temperature of the boiler.
So, from watching the Sultana video, it mentioned that one of the boilers had developed a leak before they picked up their passengers. The captain and the quartermaster had chosen to "Band-Aid" repair the leak because that would let them get underway to get their big payday.
The other thing that probably added to the problems was they overloaded the boat, which would, I expect, cause problems with list and trim of the boat. Those variations in list and trim would affect the water level in the boiler, which is what keeps the boiler from over-heating and over-pressurizing, and, ultimately, exploding.
Anyway, so if they lost water in one of the boilers and the fires stayed in, two things would happen. The metal temperatures would increase since it had insufficient amounts of flowing water to cool it, and it would exceed the design temperature of the metal. Additionally, the steam pressure in the boiler would increase, as the limited amount of water would continue to absorb the heat put out by the fires, increasing it's pressure above the design pressure of the boiler.
And that is what probably caused the explosion, which the video then said damaged the other three boilers and caused them to explode, as well.
Anyway, so that's my guess on what happened. There are a LOT of NFPA (National Fire Protection Agency) regulations in place on boilers, now, to prevent anything like that, but they simply didn't exist back then.
@@smitaaay that was very thorough, thank you. I appreciate the explanation.
Came here because I live in old gold mine country in California. Someone asked about an old style tubular boiler that looks a lot like this and what the holes were for. I wonder if the technology is essentially the same just improved for safety and efficiency.
The videos are perfect for students learning about these systems. Thank you!
Thanks for the comment! These system can be very complex and we want to help "demystify" them. Hopefully we can continue to help you out!
My teacher used this video to teach us. Thank you
Excellent Instructional video!
Hi Guys. I have an interest in steam engines. It is said that steam can do more work than compressed air, because of its ability to keep expanding in a cylinder once the inlet valve has closed. I would like to see some physical proof of this through experimentation. Something like have a boiler humming away at say 50 psi and a compressor charged up to 50 psi and do something with each to see how they compare. You might have to be a bit creative with your experiment designs, but this should be right up your alley. I offer you this challenge and look forward to seeing the results
I apologize for not getting back to you quickly but I had to do a bit of research on this one. End of the day 50 psi is 50 psi no matter what is creating the pressure, steam or air. The difference is the process usage. With steam you have the added energy of the heat which you can use for process. So in terms of pressure, 50 psi is 50 psi but the other characteristics is much different. Hopefully that answers you question! Thanks for the question!
Thank you for the response. However it just got me thinking a bit more. Consider the following scenario and let me know your thoughts. Let's have 2 identical pressure containers. For example 2 x 9 kg LPG bottles. Empty of any gas.Fit them both with an inlet/outlet tap and a pressure gauge. Now fill them both with the same amount of water, say 5 litres. That would make the tanks about half full. Now one of the tanks gets connected to an air compressor and filled to safe pressure. Say 50 psi. Close the inlet valve, and put it aside for now. The other tank has its inlet closed and is now put on top of a fire until the pressure gauge reaches 50 psi. It is then removed from the fire and placed next to the first tank. So now we should have two identical tanks containing 50 psi of pressure. The only difference is that one is hot and the other is not. Now open the outlet valves simultaneously and let them vent. What do you think would be the result of such an experiment? Would you be interested in trying it. Thanks again.
@@gasonthebrain3738 Your scenario is no question but the tank with the hot water at 50 psi will generate or give pressure, maybe not 50 psi, for almost as long as there is water in the tank because it wants to go to steam or gas. This is the exact description and basis of a fireless steam locomotive(look them up in Wickipedia). Instead of a boiler, a fireless locomotive has a very heavily insulated pressure tank that is filled almost to the top with heated steam and water at a pressure of 175 to 200 psi, a charge, which is drawn off through a regulator which reduces the pressure to around 50 or 60 psi which is used to power the pistons in the cylinders to move cars. As steam is used the water level slowly goes down until the pressure approaches the needed cylinder pressure needed then the tank is charged again. These types of locomotives were very common in chemical and munitions plants where fire is a BIG NO NO.
Ii am a old retired boilermaker of the Navy. worked only water tubes boilers 1200PSI
You must be experienced person! Great to see Engineers spent life on a critical systems.
great video, straight to the point and easy to follow. thanks.
Glad you enjoyed the video. Thanks!
Awesome fire- tube boiler video ❤❤❤ it was amazing
NICE EXPLANATION
LOT OF LOVE FROM KERALA,THRISSUR
Thank you so much 🙂
Good demo I use to work for the company that builds those boilers pipe hand
Would be nice to know what kind of temp the exiting hot smoke, gases are. So we can know how much actual heat is transferred to the water inside.
Thznk you dir for showing actual workshop boilet
WOW this has really helped me in my field ❤
greetings from Ratman from Indonesia, thank you for sharing knowledge and success for you
We build those fire tube boilder and hight temperature water boiler at unilux manufacturing
What do you use for combustion air in the mobile trailers? Just giant louvres?
Exactly that. We have large louvers that are on the boiler that works as intake air in the boiler. Thanks for watching and hopefully that clears it up!
Excellent video. Can anyone tell me please why the lower feedwater pressure helps in improving efficiency. If this is true than why to use boiler feed water pump.
Thanks.
Pressure that the boiler operates at is dictated by the demand and process requirements. Higher the pressure = Higher the temperature. The feed pump pressure is what is required to put the water into the boiler (having to overcome boiler pressure). You lose efficiency due to the steam temperature being closer to the higher stack temperature (as the steam temperature gets closer to the combustion temperature less heat transfer can occur.) Hopefully that helps! Thanks for watching
I used to work for a company in Scotland building boilers... Id weld them up
love your videos, can anyone answer this question. if water boils at 212 deg. how can water enter he boiler at 260 deg??.
Thanks for the comment! So water boilers at 212 degrees at atmospheric pressure. When you run a deaerator, it will increase the feed water pressure. This allows the water to be at a higher temperature and still not boil. Watch this video ruclips.net/video/W6iywW0z_eY/видео.html Hopefully that helps!
Love, pure love.
I’m assuming that water has to be pumped in at the same rate that it turns to steam, does the water pump have to overcome the pressure built up by the steam? I mean, if you’re making 250# of steam, does the water pump have to push in at over 250#? If that’s the case, is there a ratio, like the water pump has to pump in at twice the pressure or is it just a volume thing? Thanks guys.
What problems occur when the TDS of the water exceeds the limit specified in the design of the boiler?
Take a look at this video ruclips.net/video/2L0WzFN7S_I/видео.html Hopefully that will answer your question. Thanks for watching and commenting!
Safety valves release.
Really very nice demo. Thank you 🇮🇳.
Do you use only Morrison tube?
How similar are these to what used to drive a steam locomotive?
Good job
Thanks!
كيفية إصلاح انبوب (tube ) في غلاية Ul_s عندما يحدث بها ثقب وهذا النوع من الغلايات جهة مفتوحة والأخرى مغلقة باللحام ارجو الرد
You mentioned "everyone is moving to x-ID tubes". Are they any different to rifled tubes or are they essentially the same thing?
Same thing. X-ID are a brand name for internally enhanced tubing.
What are you referring to exactly when you say 250 horse power boiler. Thanks
Thanks for the comment! Firetube Boilers are rated in boiler horse power. So when we say 250 horse power we are referring to the power of the boiler and it's steam output. Hopefully that helps!
As an aside watertube boilers are normally rated at pounds per hour instead of bhp.
Thanks
One boiler horsepower unit equals 33, 475 BTU/hr. or 8368750 BTU/hr in the case of the 250 HP boiler. And you are welcome.
Hey y'all I'm working on a pressure washer that is currently powered by an air compressor but I thought it would be really cool to do this with steam instead of compressed air do you have any thoughts on this?
Aa33
Sorry, but if you understand the steam tables a higher pressure will be more efficient than a low pressure. This could explain the use of 3600 psi steam in electric power stations.
Love your work guys🙌
Thanks for watching!
what metal are the "fire tubes" made of
Thanks for the question! The tubes inside of a firetube boiler are made out of a carbon steel. That metal can withstand all of the hot gases as well as pressures that can be inside of a boiler. You can watch this video ruclips.net/video/u7UQKNapTBE/видео.html to learn more about the tubes.
Are the tubes in direct contact with the water? Will they corrode or rust?
The tubes do come in direct contact with the water which is why the makeup water treatment is so important. Take a look at this video ruclips.net/video/uWX_1EWSmO0/видео.html to learn how the water softener works to treat the water.
bademeister
Good presentation and I hope nobody trips over those tilted up forks on the lift behind the guys, and gets a concussion or something worse. just sayin!
Thanks for watching! Thanks for the comment
Safetyman 🐷!!!!!!!!
Good catch!
This moment vdeo great ang excelent
Good stuff!
Thanks for watching!
have you guys ever done a rebuild on a steam trains fire tubs
We tend to only work on industrial and commercial boilers. I would bet that the concept would mostly the same but might be different "got-chas". Thanks for the comment!
@@wareboilers Steam locomotive boilers are once through with the fire in the firebox then through the tubes and out the stack. Fuel may be wood, coal, or oil(diesel). The firebox is surrounded by steel and a water jacket of several inches held together with stay bolts.
I like this work
A M A Z I N G.
I do like it
Is a three-pass boiler the industry standard? Just curious. Writing my Firemans exam next week.
Three-pass boilers are becoming more of the industry standard as time goes on. Four-pass was originally more common but this has slowly been taken over by three-pass. Thanks for watching and commenting!
I used to repair these things.
Who makes it?
My whatsapp is +0086 15336457919， May I know yours? I want to send machine running video to you.
i do like these videos i am a Union Pipefitter Servicefitter Local 533 Kansas City Mo.
Great to hear! Hopefully we are a great resource for you guys (that's our goal at least!) Thanks for watching
Sounds old school?
nice idea
Thanks for watching!
good
Good morning
Hello İ am a fresh graduated mechanical engineer in Turkey.
İ am on a project that has skoc boiler calculations. For instance Sheet thickness, pipe diameter...
İs there any one to help me in this process.
Thanks
Good like
Thanks for watching!
Best
Job sir
I'm boiler operation on lasan
3 pas boiler
Why am I watching this. It’s so interesting but is useless info for me
700 likes
😂