I think the similarities and differences between Deane and Rob in their presentation techniques are interesting. One thing I've noticed, probably subconscious, is that Deane talks with his legs.
When you guys talked about vacuum power generation, did you somehow mean the steam turning back into water after being condensed and using that flow of water (enhanced by gravity also) to generate energy? Or what did you mean exactly? Never heard of such thing. Cause if there was a vacuum inside the metal, the heat expansion prior to that would be the last thing I would worry about, since atmospheric pressure could crush those steel pipes or tanks, so I'm confused with that vacuum talk.
Hi. For "vacuum" read "à pressure below atmospheric". How much below? Dunno. The turbine spins because the gas (steam) will go from a higher pressure zone to à lower one, pushing the turbine blades on the way. The speed of spin depends on the difference in pressure between inlet and outlet. Chilling the exhaust reduces the outlet pressure and makes the turbine spin faster. In principle, this dates all the way back to James Watt's invention of the external condenser for steam piston engines, which sent the exhaust through a heat exchanger to chill it, and so "sucked" on the piston, if you'll forgive the term.
@@raykent3211 Thanks for your reply! Really appreciate it. BTW, do you happen to know some good literature, books on the matter? Regarding steam energy production, turbines, engines and its dynamics, mechanics and such.
@@V0YAG3R hi Belmont. I'm afraid I can't help much, I don't have any books on the subject. My limited knowledge comes from having studied physics and picked up other bits along the way. The piston types are quite easy to understand so searching the net for stuff on those could be a good start. When it comes to efficient turbine design it gets pretty difficult. Fluid dynamics plays a big part and that ain't easy! Anyway, I hope I'm not putting you off, the basics of turbines are easy enough.
Condensing the exhaust steam in an enclosed condenser allows the final pressure to be below atmospheric. The increased pressure drop across the turbine increases the amount of energy extracted and increases cycle efficiency. Condensers usually use river water or cooling tower water on the cold side. In this case, the "getting more energy out of the exhaust steam" probably means that they are using the steam condenser to double as the boiler for a second, low pressure, low temperature stage, probably using a low-boiling fluid like pentane or isobutane, which would boil, drive another turbine, be condensed (this time with the cold river water or cooling tower water), and be pumped to repeat the cycle. It increases the energy that can be extracted and the cycle efficiency. Oh, and yes. The vacuum in the condenser can be a problem. For one, the condenser hood has to be designed to withstand the pressure. Before the turbine is put online, a vacuum pump must start pumping out the non-condensible gases that accumulated during shutdown. Once it is in operation, there will be a tendency for air to leak through the turbine shaft seal and spoil the vacuum, which requires the use of labyrinth shaft seals and steam gland sealing systems.
can i use a small portion of your video without monetization to let people know of this generator that is operated on four cylinders and is capable of powering 8 to ten houses. because i want to make a four speed four cylinder electric truck with it. i need my friend online to help and in fourth gear just above nominal speed it should get full or enough power for a box truck at thirty miles per hour and the truck would be traveling at 75 on electric hydraulic motor. or there abouts. no i am american Please send a reply with volt and amps once again please.
I realise it was a much simpler time, but it seems odd that Deane would be permitted to walk around that power station without wearing any PPE. The old steam engine is a health and safety disaster waiting to happen too (though that's probably been addressed by now).
I'm glad you asked! He says "drying lucerne". Lucerne, also known as alfalfa, is a type of plant that is dried and made into hay to use as feed for livestock.
@@BestBackingTracks , thanks. I know alfalfa, but didn't know it was also called "lucerne"-which I would have pronounced "loo-SAIRN". Now I know something new.
That's crazy!... As far as I can read, those 600m holes are only dug 0.006% of the earth's crust... And yet produce such power... The earth is truely amazing.
I was thinking something similar with how often they said "dry steam". There must be some industry definition or something. I'm assuming they mean steam without any liquid water.
When I studied thermodynamics, we used a thing called steam tables. A small book of data about the properties of steam at different pressures and temperatures. In this context, steam was treated as anything from liquid to a mixture (vapour) to a practical gas (super heated steam - dry). It all comes down to context. This video is rather colloquial so the definition of "steam" changes throughout.
He should have said liquid water. As Watt noticed, if you boil a kettle there's a completely transparent area near the spout before the white cloud further out. The transparent stuff is H2O in gaseous form, the white cloud includes some tiny condensed liquid H2O droplets which disperse light. The transparent region is dry steam.
Evidently...the steam doesn't cools down by the time it reaches the turbines since the power station works, and even after the turbines it needs to be cooled down using fresh water.
No reason was given in the video. My only guess is geological, maybe the ground is not stable enough nearer the bore hole. It's surprising. Anyway, even with the best insulation a lot of heat will be lost and there is no advantage to that before it enters the turbines. It's an energy loss. So I guess they had no choice. Or they have enough energy available to squander.
Because turbine generator sets are EXPENSIVE, and because multiple wells are needed to feed one turbine. And due to economies of scale, it doesn't make sense to put a turbine at every well. Insulation of the steam lines keeps heat losses to a minimum.
I suspect it's 10km in total, not 10km for each pipe. I didn't count the number of pipes in that shot, but assuming there are 10 pipes that's 1km for each pipe.
The vast majority of the heating is not due to friction between tectonic plates. It is because the Earth's core is hot (near tectonic plate boundaries, magma can get higher into the crust), and the Earth's core is hot because of radioactive decay. If it weren't for radioactive decay, the Earth's core would have cooled down to a solid in under a billion years. Thanks to radiation, it's still hot 4.5 billion years later.
James is correct about the factor of 10^3 - need to listen carefully to what is said. The source of heat varies in different parts of the globe. I assume that tectonic friction is a major source there; New Zealand is a fairly active place in that sense.
Excellent video guys !
Deane gets to climb all over a power station while Rob eats prawns 😂
Rob wearing his blue shirt really fits in on an Industrial themed video like this 😊
Very interesting. Thank you.
Casio Databank watch spotted!
Science is golden.
I think the similarities and differences between Deane and Rob in their presentation techniques are interesting. One thing I've noticed, probably subconscious, is that Deane talks with his legs.
Excellent video!
When you guys talked about vacuum power generation, did you somehow mean the steam turning back into water after being condensed and using that flow of water (enhanced by gravity also) to generate energy? Or what did you mean exactly?
Never heard of such thing. Cause if there was a vacuum inside the metal, the heat expansion prior to that would be the last thing I would worry about, since atmospheric pressure could crush those steel pipes or tanks, so I'm confused with that vacuum talk.
Hi. For "vacuum" read "à pressure below atmospheric". How much below? Dunno. The turbine spins because the gas (steam) will go from a higher pressure zone to à lower one, pushing the turbine blades on the way. The speed of spin depends on the difference in pressure between inlet and outlet. Chilling the exhaust reduces the outlet pressure and makes the turbine spin faster. In principle, this dates all the way back to James Watt's invention of the external condenser for steam piston engines, which sent the exhaust through a heat exchanger to chill it, and so "sucked" on the piston, if you'll forgive the term.
@@raykent3211 Thanks for your reply! Really appreciate it. BTW, do you happen to know some good literature, books on the matter? Regarding steam energy production, turbines, engines and its dynamics, mechanics and such.
@@V0YAG3R hi Belmont. I'm afraid I can't help much, I don't have any books on the subject. My limited knowledge comes from having studied physics and picked up other bits along the way. The piston types are quite easy to understand so searching the net for stuff on those could be a good start. When it comes to efficient turbine design it gets pretty difficult. Fluid dynamics plays a big part and that ain't easy! Anyway, I hope I'm not putting you off, the basics of turbines are easy enough.
Condensing the exhaust steam in an enclosed condenser allows the final pressure to be below atmospheric. The increased pressure drop across the turbine increases the amount of energy extracted and increases cycle efficiency. Condensers usually use river water or cooling tower water on the cold side. In this case, the "getting more energy out of the exhaust steam" probably means that they are using the steam condenser to double as the boiler for a second, low pressure, low temperature stage, probably using a low-boiling fluid like pentane or isobutane, which would boil, drive another turbine, be condensed (this time with the cold river water or cooling tower water), and be pumped to repeat the cycle. It increases the energy that can be extracted and the cycle efficiency.
Oh, and yes. The vacuum in the condenser can be a problem. For one, the condenser hood has to be designed to withstand the pressure. Before the turbine is put online, a vacuum pump must start pumping out the non-condensible gases that accumulated during shutdown. Once it is in operation, there will be a tendency for air to leak through the turbine shaft seal and spoil the vacuum, which requires the use of labyrinth shaft seals and steam gland sealing systems.
can i use a small portion of your video without monetization to let people know of this generator that is operated on four cylinders and is capable of powering 8 to ten houses. because i want to make a four speed four cylinder electric truck with it. i need my friend online to help and in fourth gear just above nominal speed it should get full or enough power for a box truck at thirty miles per hour and the truck would be traveling at 75 on electric hydraulic motor. or there abouts. no i am american Please send a reply with volt and amps once again please.
I realise it was a much simpler time, but it seems odd that Deane would be permitted to walk around that power station without wearing any PPE. The old steam engine is a health and safety disaster waiting to happen too (though that's probably been addressed by now).
What's the word just after 7:02? "so that the heat can be used in drying ??? and drying timber"
I'm glad you asked! He says "drying lucerne". Lucerne, also known as alfalfa, is a type of plant that is dried and made into hay to use as feed for livestock.
@@BestBackingTracks , thanks. I know alfalfa, but didn't know it was also called "lucerne"-which I would have pronounced "loo-SAIRN". Now I know something new.
That's crazy!... As far as I can read, those 600m holes are only dug 0.006% of the earth's crust... And yet produce such power...
The earth is truely amazing.
Isn’t steam with water removed just air?
I was thinking something similar with how often they said "dry steam". There must be some industry definition or something. I'm assuming they mean steam without any liquid water.
lol
When I studied thermodynamics, we used a thing called steam tables. A small book of data about the properties of steam at different pressures and temperatures. In this context, steam was treated as anything from liquid to a mixture (vapour) to a practical gas (super heated steam - dry). It all comes down to context. This video is rather colloquial so the definition of "steam" changes throughout.
He should have said liquid water. As Watt noticed, if you boil a kettle there's a completely transparent area near the spout before the white cloud further out. The transparent stuff is H2O in gaseous form, the white cloud includes some tiny condensed liquid H2O droplets which disperse light. The transparent region is dry steam.
Correct, Ray. You have explained the states of matter very clearly. Deane.
Why do the pipes have to be 10km long? Seems so inefficient. The steam would have cooled down so much by the time it reached the turbines.
Evidently...the steam doesn't cools down by the time it reaches the turbines since the power station works, and even after the turbines it needs to be cooled down using fresh water.
No reason was given in the video. My only guess is geological, maybe the ground is not stable enough nearer the bore hole. It's surprising. Anyway, even with the best insulation a lot of heat will be lost and there is no advantage to that before it enters the turbines. It's an energy loss. So I guess they had no choice. Or they have enough energy available to squander.
Maybe that's how far they had to dig to tap the source.
Because turbine generator sets are EXPENSIVE, and because multiple wells are needed to feed one turbine. And due to economies of scale, it doesn't make sense to put a turbine at every well. Insulation of the steam lines keeps heat losses to a minimum.
I suspect it's 10km in total, not 10km for each pipe. I didn't count the number of pipes in that shot, but assuming there are 10 pipes that's 1km for each pipe.
Dry steam.
2,000 cars? Do you guys have electricity cars?
There's no such thing as a waste product only something you having figured out how to use yet. Just ask the dung beetle he would know.
The description of the heat coming from friction seems odd. Did we not know about radiative heating in the 80s? I thought we did...
He was talking about how the underground water gets hot, i.e. friction between tectonic plates. What radiated heat are you talking about??
The vast majority of the heating is not due to friction between tectonic plates. It is because the Earth's core is hot (near tectonic plate boundaries, magma can get higher into the crust), and the Earth's core is hot because of radioactive decay.
If it weren't for radioactive decay, the Earth's core would have cooled down to a solid in under a billion years. Thanks to radiation, it's still hot 4.5 billion years later.
The one dislike is from Donald Trump. Where's the clean coal? He likes that bigly. Covfefe.
All that for 150 kW? Also, I've never heard that the heat comes from rocks rubbing together.
150000 kW
James is correct about the factor of 10^3 - need to listen carefully to what is said.
The source of heat varies in different parts of the globe. I assume that tectonic friction is a major source there; New Zealand is a fairly active place in that sense.