Some comments from someone who's been involved in engineering power plant boilers: 1. Doesn't discuss role of condenser and why it's important. When steam flows through turbines, some of it condenses and must be removed to avoid turbine blade damage. Also, after steam has passed through all boilers, it is cooled and condensed back into liquid, sometimes by using water from a river or lake, sometimes by using ambient air. This significantly improved thermodynamic efficiency of process. Typically, condensers operate under medium to high vacuum to maximize thermodynamic efficiency. Liquid condensate is then recycled back to feedwater pumps. 2. There is significant thermal expansion of boiler as it comes from a cold state to online. Large watertube boilers are suspended from near top; I've seen some boilers expand downward more than a foot (1/3 meter) due to thermal expansion. 3. Because of condenser, you can consider steam piping an "open" process, which means video's treatment of pressure during heating is essentially correct. But in order to reach maximum allowable temperature (limited by turbine metallurgy), water and steam pressure must be high, generally 1000+ PSIA. This pressure is mostly supplied by feedwater pumps. 4. Reason for multiple water passes through hot combustion gases is to primarily extract as much of the heat content from the combustion gases as possible. Economizer preheats boiler feed water using "cooler" combustion gases. Reheater uses hotter gases, superheater uses even hotter gases and main watertube chamber uses hottest gases. Side benefit to extracting maximum heat from combustion gases is thermal efficiency of overall process. The more heat you remove from combustion gases the better; plus it is a benefit to reject combustion gases to atmosphere as close to ambient temperature as achievable. I've even seen places use air to air heat exchanges to preheat incoming combustion air using combustion gases after water preheater. 5. Superheating is your friend. Dries out the steam, which is safer for turbine, plus provides significant thermodynamic efficiency. 6. Boilers generally use air, which has side effect of creating NOx molecules, which are environmental pollutants. This can be mitigated by extending flame length and reducing flame temperature. A newer way is to filter out most of the nitrogen and supply air with higher concentration of oxygen. 7. Everything is interrelated; changes in operating regime always impact something else.
This is an excellent video. I have worked as an operator and now teach power plant operations, as a consultant. I am very impressed with the quality of your video. You might consider revising the narration regarding superheated steam. By definition, steam does not become superheated until all moisture is vaporized. Likewise, it remains superheated until it again reaches saturation. At saturation, there might be some moisture. Below saturation is liquid. Just a small point, but there can be no moisture in superheated steam. I hope you have been able to continue you work. This is a truly fine animation for teaching.
you are right! we are industrial boiler manufactor in China, have 50+ years experience in boiler making, our official facebook have professional knowledge in boiler structure, running, operating etc, welcome you to visit our facebook page facebook.com/china.sitong.boiler/?ref=aymt_homepage_panel, and my personal facebook no is changhong zhang
Hi I'm Mahabubul Haque from Bangladesh n working in power sector for foreign manufacturers/suppliers generation, transmission n distribution products marketing through international tender. In our country there are many sugar mills n there small type power substation. But we need your support for production of energy in our sugar mills. I am eagerly waiting for your reply through my email address - mahabubul.ventures@gmail.com
This is an interesting video on the basics of how a generating station boiler works. I worked for 34 years in Los Angeles DWP generating stations. Most of those years I was an operator of the generating station equipment. I also know that there is a lot more that could be said about generating station boilers.
The same phenomena happens within Refrigerant pipes. Any pressure differences within the high or low sides off an AC pipe occur due to friction with the pipe surface. Differences in heat content throughout the length of the pipe effect the density off the gases not the pressure of the gas on either side. For this reason refrigerant mass tends to migrate to colder areas.
Thanks, the more videos on this, the better for me. I am taking Power Engineering right now, so the more I see the better I understand how it all works together.
I got to the end and was "What? You stopped and now I have to watch another video?" This is as bad a season ending cliffhanger. Great video by the way.
You should have mentioned that in case of REHEAT only the pressure dosent increase but falls due to bends in piping arrangement and so does it happens when saturated steam from boiler drum travels through different sort of superheat circuits. But in waterwall its pressure do increase during circulation in drum....
And you could take that 40 degree Celsius water that leaves the condenser and use it to run an turbine that uses ammonia as a working liquid/gas or a Stirling engine. This would especially work if you were next to a large body of deep cold water. Like in Minnesota or Winnipeg.
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“. # Why do we use deaerators?… The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced. #water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction techproces.com/deaeration-process/
Hi. I work in a power plant where we are putting together training material and I wonder whether Lesics videos are free to be used for training purposes on internal - non commercial use. And how about training for commercial use? Thanks
Dear friends, We hope you liked the video. Currently we are in a financial trouble and planning to stop our service after winding up the current projects ( 3-4 month) . If you would like to help us, please visit our Patreon page. Thank you ! www.patreon.com/LearnEngineering
+Aminus Vox At the end of the day money matters. If your production cost is more than the revenue, there is no chance of survival. However Patreon gives some hope ! We are at 1/3rd of our target.
Your videos are really amazing, and I prefer these videos more than my university lectures. I hope you come out these financial crisis soon. God bless you :)
I'm no engineer but can the boiler be driven by two different heat sources? There's this idea that if intermittent renewable energy were instead used to co-supply heat in such a system, it could more effectively displace fossil fuel consumption without threatening the grid's stability. I hear that Rankine Turbine Generator output is inflexible but what about the fuel feed?
I have a question, he said" because the blades of the turbine cannot bear more than 600 C, so another heat exchange is added then the steam with high temperature goes to the turbine, so my question is the steam which occurred from another heat exchange will add to the turbine again with high temperature so why he said the blades can't bear a high T
The burners in the bolier in your presentations They are directed against each other, bu in real life burners are oriented at an angle that the flame was swirled(greater surface area of the flame). Am I right or not? I was inside in Bolier in the power station when boliers was in renovation. Great video!! We can see how works the boiler ;)
Sir i have a Q that if the inlet pressure of water lets say 1 atm must be equal to outlet pressure of steam generated , in this case we will be producing a steam at 1 atm? My Q is then how to increase pressure of steam in a boiler?
great video. I've benn wondering how the generators(the actual machine that creates the electricity) works and i'be be really cool if you explained it in a vid.
please help me. I have measuring points I want to use a sensor in boiler, turbine, and furnace and I have bourdon tube, diaphragm and bellows bell gauges. what 's the best sensor of them I can use it ?
An excellent video. I just have one question and I hope you answer me. I did not understand the idea of the moisture content. What will happen or the effect after reducing it?
Saturated steam is the original output from the boiler, that has moisture in it. Moisture in the pipes greatly reduces the productivity and longevity of steam before going into the turbine blades. Condensate will not spin the turbine blades. In fact, it will destroy them. Productivity is increased by raising the steam temp AFTER it is no longer in contact with the water it was generated from. That lowers the moisture content.
A lot of things that produce power end up comming down to heating water to make steam (including nuclear reactors and solar collectors, which are different from solar panels).
i need to ask a question i hope to find the neat answer here with u the pressure of the net of the steam .. does it equals with the vapor pressure of the water at sat. temp when the boiler is creating the sat. steam??? are they the same pressure??
Some comments from someone who's been involved in engineering power plant boilers:
1. Doesn't discuss role of condenser and why it's important. When steam flows through turbines, some of it condenses and must be removed to avoid turbine blade damage. Also, after steam has passed through all boilers, it is cooled and condensed back into liquid, sometimes by using water from a river or lake, sometimes by using ambient air. This significantly improved thermodynamic efficiency of process. Typically, condensers operate under medium to high vacuum to maximize thermodynamic efficiency. Liquid condensate is then recycled back to feedwater pumps.
2. There is significant thermal expansion of boiler as it comes from a cold state to online. Large watertube boilers are suspended from near top; I've seen some boilers expand downward more than a foot (1/3 meter) due to thermal expansion.
3. Because of condenser, you can consider steam piping an "open" process, which means video's treatment of pressure during heating is essentially correct. But in order to reach maximum allowable temperature (limited by turbine metallurgy), water and steam pressure must be high, generally 1000+ PSIA. This pressure is mostly supplied by feedwater pumps.
4. Reason for multiple water passes through hot combustion gases is to primarily extract as much of the heat content from the combustion gases as possible. Economizer preheats boiler feed water using "cooler" combustion gases. Reheater uses hotter gases, superheater uses even hotter gases and main watertube chamber uses hottest gases. Side benefit to extracting maximum heat from combustion gases is thermal efficiency of overall process. The more heat you remove from combustion gases the better; plus it is a benefit to reject combustion gases to atmosphere as close to ambient temperature as achievable. I've even seen places use air to air heat exchanges to preheat incoming combustion air using combustion gases after water preheater.
5. Superheating is your friend. Dries out the steam, which is safer for turbine, plus provides significant thermodynamic efficiency.
6. Boilers generally use air, which has side effect of creating NOx molecules, which are environmental pollutants. This can be mitigated by extending flame length and reducing flame temperature. A newer way is to filter out most of the nitrogen and supply air with higher concentration of oxygen.
7. Everything is interrelated; changes in operating regime always impact something else.
Thanks for taking the time to explain
This is an excellent video. I have worked as an operator and now teach power plant operations, as a consultant. I am very impressed with the quality of your video. You might consider revising the narration regarding superheated steam. By definition, steam does not become superheated until all moisture is vaporized. Likewise, it remains superheated until it again reaches saturation. At saturation, there might be some moisture. Below saturation is liquid. Just a small point, but there can be no moisture in superheated steam.
I hope you have been able to continue you work. This is a truly fine animation for teaching.
you are right! we are industrial boiler manufactor in China, have 50+ years experience in boiler making, our official facebook have professional knowledge in boiler structure, running, operating etc, welcome you to visit our facebook page facebook.com/china.sitong.boiler/?ref=aymt_homepage_panel, and my personal facebook no is changhong zhang
Hey Ray, what do you know about advanced ultra super critical technology?
Hi I'm Mahabubul Haque from Bangladesh n working in power sector for foreign manufacturers/suppliers generation, transmission n distribution products marketing through international tender.
In our country there are many sugar mills n there small type power substation.
But we need your support for production of energy in our sugar mills.
I am eagerly waiting for your reply through my email address - mahabubul.ventures@gmail.com
Excellent video. Pressure also increases because against a saturation pressure, there is a saturation temperature.
thanks , taking some notes
You put things very nicely it is worth watching your 5 minute video rather than read a book for hour🙌🙌🙌 hats off!!!
This is an interesting video on the basics of how a generating station boiler works. I worked for 34 years in Los Angeles DWP generating stations. Most of those years I was an operator of the generating station equipment. I also know that there is a lot more that could be said about generating station boilers.
Most trusted channel for engineering concept explanation ❤️
The same phenomena happens within Refrigerant pipes. Any pressure differences within the high or low sides off an AC pipe occur due to friction with the pipe surface. Differences in heat content throughout the length of the pipe effect the density off the gases not the pressure of the gas on either side. For this reason refrigerant mass tends to migrate to colder areas.
I really like your content guys it's very helpful. And i really appreciate your hard work.
excellent and remarkable, like always. I understood everything very well with help of you and your marvelous illustration.
Definitely the most awesome channel for learning. Concise and really educative
thats so cool!!
i mean the explanation is well DETAILED.
thanks
does anybody beleive that too?
No
Thanks, the more videos on this, the better for me. I am taking Power Engineering right now, so the more I see the better I understand how it all works together.
Boilermaker Local 60 out of Morton, IL. This is a great video!
It is very useful video. Any one can understand the concept. Thanks for your hardworking.
Very simplified explanation.
Amazing explanation 👌🏻👌🏻👍🏻👍🏻 good animation....video are very good to understand the concepts.....
it's fun learning engineering concepts with ur video contentssss , Thank you sooo much!!
I got to the end and was "What? You stopped and now I have to watch another video?" This is as bad a season ending cliffhanger. Great video by the way.
jaye1967 ruclips.net/video/GtIWoCXh6bc/видео.html
Way of explanation is too good
thanx for sharing small yet important information. ....
The 1st heat absorption is the generating bank, (water wall). The economizer is just before the Stack inlet, at the end of the boiler Flue gas pass
you are a gentle man.
Clear and beautiful explanation
Very Well Done, Best Video Explaining Boiler Feedwater Flow and Steam. Thank you.
brknspacebar ruclips.net/video/GtIWoCXh6bc/видео.html
Gotta write about all of these for my hnc. Thanks for the vid. Very interesting and useful for my thermodynamics unit
most suitable video for thermodynamics
This channel is amazing
The best explanation
Good explained
You should have mentioned that in case of REHEAT only the pressure dosent increase but falls due to bends in piping arrangement and so does it happens when saturated steam from boiler drum travels through different sort of superheat circuits. But in waterwall its pressure do increase during circulation in drum....
Thank you for your very helpful movies. Very thank you.
What about Air Preheater? You didn't discussed about that.
Very very thank you to learn engineering. Very high quality animation.
And you could take that 40 degree Celsius water that leaves the condenser and use it to run an turbine that uses ammonia as a working liquid/gas or a Stirling engine. This would especially work if you were next to a large body of deep cold water. Like in Minnesota or Winnipeg.
Amazing explanation! Thanks
Thank you for this video, it was very helpful.
What's name of this boiler
Ideal channel i found... 🙏
awsome stuff guys !
great great Absolutely great explanation for engineering studies.Keep it up well done
There are tow type of boilers:
Preasurised&vacuum..
There are tow sections in poth:
Convection&radiation
Soperheat&reheat
I really like this video
Great video, it`s well analyzed
*Excellent work ever...*
this is really nice..... planning to study power plant engineering
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
Thank you.❤
Amazing video
i like it .....what is the program you use it to make this video
I work in a boiler, it does not use gas or FO fuel but uses rice husk or sawdust. from Vietnam
nguyễn Cương what is like working with the boilers if you don’t mind
A lot of love from india sir.
I think it is made by ansis or catia software.
열역학 한학기 수업보다 많은 것을 가르쳐주는 4분짜리 동영상.......ㄷㄷㄷ
Thanku u for making it easier to understand 😇
Amazing work! Thanks you!
Cleared my doubts
Yes the videos are very educative
To think about it yes it makes sense that the water pressure in a boiler doesn't rise due to flow. That was interesting.
What a amazing video it is! thanks a lot. I wonder could i get a script about videos..
Hi. I work in a power plant where we are putting together training material and I wonder whether Lesics videos are free to be used for training purposes on internal - non commercial use. And how about training for commercial use? Thanks
Looks like a old school technology introduction video, nice
Cooling system is most important in the mixer
I can't donate but I've been informing others of your channel and hopefully that helps.
+THEstupidANT That is great, Thank you :)
Thnxs more all Iraqi engineer follow you always
Dear friends, We hope you liked the video. Currently we are in a financial trouble and planning to stop our service after winding up the current projects ( 3-4 month) . If you would like to help us, please visit our Patreon page. Thank you !
www.patreon.com/LearnEngineering
+Aminus Vox At the end of the day money matters. If your production cost is more than the revenue, there is no chance of survival. However Patreon gives some hope ! We are at 1/3rd of our target.
Your videos are really amazing, and I prefer these videos more than my university lectures. I hope you come out these financial crisis soon. God bless you :)
+Farhan Shakeel Thank you for the well wishes :)
+Aminus Vox Let's hope for the best.
also hoping you overcome the obstacles. I love the way you explain things graphically. Best engineering channel on yt undoubtly.
Sir, When is the zero pressure in the running boiler.?
Brilliant thanks
It is very useful video . Thanks
I have a question What software did you use to prepare and draw this system? And how did you set it in motion?
very good explanation
Very good video Sir, I was searching for this.Thank you for sharing this.
Sir, P^2(out)=P(in)🤔
Because pressure increase after input in pipe.
I'm no engineer but can the boiler be driven by two different heat sources? There's this idea that if intermittent renewable energy were instead used to co-supply heat in such a system, it could more effectively displace fossil fuel consumption without threatening the grid's stability. I hear that Rankine Turbine Generator output is inflexible but what about the fuel feed?
Some coal plants have been altered to run on Biomass and some gas turbins can run on Natural gass, and fuel oil.
In our plant they are using bi-drum and two pass boiler, uses of bi-drum
Great video!
I have a question, he said" because the blades of the turbine cannot bear more than 600 C, so another heat exchange is added then the steam with high temperature goes to the turbine, so my question is the steam which occurred from another heat exchange will add to the turbine again with high temperature so why he said the blades can't bear a high T
very helpful video.thank you very much.
Thanks
This is basic but it actually helps
Thank you...
Very amazing lecture
The burners in the bolier in your presentations They are directed against each other, bu in real life burners are oriented at an angle that the flame was swirled(greater surface area of the flame). Am I right or not? I was inside in Bolier in the power station when boliers was in renovation. Great video!! We can see how works the boiler ;)
Superb video..very nice
Sir i have a Q that if the inlet pressure of water lets say 1 atm must be equal to outlet pressure of steam generated , in this case we will be producing a steam at 1 atm? My Q is then how to increase pressure of steam in a boiler?
great video. I've benn wondering how the generators(the actual machine that creates the electricity) works and i'be be really cool if you explained it in a vid.
+Jacobo Pindado We have video on alternators. Please check it out !
please help me. I have measuring points I want to use a sensor in boiler, turbine, and furnace and I have bourdon tube, diaphragm and bellows bell gauges. what 's the best sensor of them I can use it ?
Great video animation
Thank you very much sir!
very good,thank u dear
excelente !!!! seria buen una version en español
Very Nice
An excellent video. I just have one question and I hope you answer me. I did not understand the idea of the moisture content. What will happen or the effect after reducing it?
Saturated steam is the original output from the boiler, that has moisture in it. Moisture in the pipes greatly reduces the productivity and longevity of steam before going into the turbine blades. Condensate will not spin the turbine blades. In fact, it will destroy them. Productivity is increased by raising the steam temp AFTER it is no longer in contact with the water it was generated from. That lowers the moisture content.
really helpful! Thank u so much for explaining so clearly..hope to see another such videos :)
very use full message. .thanks.
Thank for give motivation
This is very informative video.
I am one of the subscriber of ur channel I like ur videos but I ask u aquestion Which softwares or applications u use for sound????plz help
A lot of things that produce power end up comming down to heating water to make steam (including nuclear reactors and solar collectors, which are different from solar panels).
Cool video
Beautiful
I like the content. So helpful
Very clear thank you
i need to ask a question i hope to find the neat answer here with u
the pressure of the net of the steam .. does it equals with the vapor pressure of the water at sat. temp when the boiler is creating the sat. steam???
are they the same pressure??