Gas Turbines and Combined Cycle Power Plants Explained - saVRee Snacks (SS#05)

[@savree-3d]

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[@savree-3d]

More videos planned. I think maybe a nuclear power plant video is next. Leave video suggestions if you have them!

[@mbs0710]

hell, yes considering being a ChE just finished Chernobyl xd

[@sdsorrentino]

You present this as if the reason for the boiler was to use the waste heat of the Gas Turbine Generators (GTG). I think it's actually the other way around. In order to make steam you need heat. But rather than just use natural gas burners to heat the boiler directly, they increase the efficiency by running it through a GTG first. Combined cycle plants are common as electrical peaking plants, but I see them used in cogeneration facilities where they needed the steam for building heat. A local university to me basically gets free electricity by using three combined cycle plants to supply the low pressure steam for building heat. They get 80K Lbs per hour of steam just from the GTGs and a further 80K from burners in the HRSGs. They even added a small steam turbine as a "dump" that can handle 15K lbs per hour steam so they can still run all three GTGs when the campus load drops below 80K per hour. They use the three GTGs to generate electricity and have the ability to produce between 65K and 160K pounds of steam per hour for building heat depending on the needs of the campus. Before they used GTGs they just used regular boilers, using basically the same amount of fuel but getting zero electricity. From their point of view they didn't replace the boilers, they replaced the burners. Instead of direct fired boilers, they replaced the half of the burners with GTGs and got free electricity out of their process. It's been a MASSIVE savings to them.

[@destinyglitches9519]

Where I think you are incorrect: the primary function of a Gas Turbine is to generate electricity, not heat the boiler. BUT, the GT is made economical by powering a boiler with it’s exhaust heat (HRSG).

[@zhubajie6940]

Worked on designing for many years such systems and equipment for decades.

[@ernestjustin7249]

I really enjoyed the lesson

[@ScanderiteMagnoliaGalaxyPG3D]

thanks for this video saVRee

[@savree-3d]

No problem 😊

[@ScanderiteMagnoliaGalaxyPG3D]

@@savree-3d i spend 8 hours watching youtube videos on the weekends for school days i spend 4 hours watching youtube videos

[@ericvelazquez4160]

Wow great job. Thank you.

[@JigilJigil]

Another great video.

[@savree-3d]

I appreciate that. Thanks.

[@billlangdon8955]

Great addition

[@calebreutener870]

The BANG comes from the explosive burn of a 4 stroke engine. Also the whole memory aid is meant to be innuendo

[@Torbjorn92]

More videos on this topic pleas

[@guadalupemendoza1771]

How would you approach skin and job for the city that used turbine combustion to make electricity? What type of educational certifications or books where I need to get and by the way merry Christmas?

[@mibo747]

Exceplent presentation and video

[@savree-3d]

Much appreciated. Gas turbine course coming. HRSG video also.

[@koltoFHD2007morita]

Thats nearest to reality thanks ❤

[@seyedmohammadhosseinirachi72]

thank you for the video, I think it could be better if you could show a range of Temperatures and pressures of the streams.

[@Ishadow23]

Hi John, can you please explain about propeller cavitation? The causes and solutions for it. Thank you so much.

[@MrSupremeCinema]

That looks awesome. Thanks!!

[@savree-3d]

No problem!

[@errrcc]

Hey John, did you remove the join member button? I got an email saying that I am no longer a member. I would like to know because I have loved being a member to get access to your engineering playlists. I am a senior chemical engineer, and your videos have been super valuable in helping me learn equipment, etc., in industry.

[@savree-3d]

We had to cancel to cancel the KZbin member feature unfortunately. Best thing to do is go to courses.savree.com. There are handbooks, quizzes, certificates, and also more courses than what were on KZbin.

[@user-jt6nw6wm5q]

Hi can you explain the function of the exciter on a generator rotor?

[@silasdiniz]

Great video!

[@savree-3d]

Thanks!

[@waelgs]

thank you for the informative presentation, How can we access the 3D model page?

[@savree-3d]

You can do so at saVRee.com.

[@terryboyer1342]

Never heard of pulverized coal being used as fuel for das turbines. Seems like a nightmare for turbine blade wear as well as injectors. Can you provide ant examples of one of these?

[@savree-3d]

It is not main stream. They had pilot programs for ultra pure coal, but I don't think it ever became viable. Pulverized coal is listed though as an acceptable fuel for GE turbines (on the GE website) so I put that into the video.

[@terryboyer1342]

@@savree-3d Thanks!

[@29boilersunderthesea99]

Check out some locomotives called GTEL's (Gas turbine electric locomotive) they used bunker C mainly with a couple prototypes later being made for pulverised coal

[@terryboyer1342]

@@29boilersunderthesea99 I'm familiar with UPs GTELs which initially used Bunker C and layer switched to #6 HFO. I don't recall any that were tested with pulverized coal as a fuel. There were the C&Os experimental M1 coal steam turbines. But these used regular coal to make steam in a boiler for the turbine. Again I don't recall pulverized coal used as fuel with them.

[@29boilersunderthesea99]

@@terryboyer1342 I will try and find where I saw it and post it here

[@SamuelGreen-x5t]

Hello John, thank you for the informative presentation, I am a student register member, How can I have the coupon to make payment to have access to all savree video courses

[@sillysad3198]

it still puzzles me what exactly creates the DIRECTION... what makes the turbine anisoptropic between its intake and exhaust? if i combust fuel and increase the gas pressure this pressure is ISOTROPIC -- it must expel the gas from the both holes of the turbine.

[@KieraCameron514]

Natural gas has much smaller emissions than coal and it is used to firm up wind and solar power.

[@yashwanthoyashu6769]

ssbb

[@sigmacentauri6191]

There is absolutely no reason why this cannot be scaled down and put under the hood of consumer vehicles so we can actually have decent fuel economy. There’s actually a lot of different things that can be performed with that waste of heat energy including making hydrogen from steam and running that back into the combustion process.

[@MaximusU76]

But there are some real hard reasons why it is difficult to effectively scale to a car size. Good thermoinsulation and recuperation need bulky and heavy stuff. And heat-exchange processes are too slow, so you need large plant for decent motor power.

[@seanjarnigan8978]

It was tried by chrysler in the 60s. They work, but the tolerances are much tighter making manufacturing cost much higher. That plus a more intense maintenance schedule and higher sensitivity to neglect make them impractical.

[@IceyVan]

There’s a lot of reasons actually

[@hunterirvin1945]

In the field we call them turbans. I don’t know why

[@davidanalyst671]

you aren't very good at explaining things. most of the time you are just looking and zooming around a diagram, and reading specs and names that aren't relevant.