Check the bottom tank on that page - 700 bar, 52L. Given there are 9.17 MJ/L for compressed hydrogen, that's about 476 MJ of energy. At ~278 Wh per MJ, that is equivalent to a 132 kWh pack - about double a Model 3. So a small, 38 kg tank has the same energy storage as a pair of Model 3 battery packs. Tell me again why batteries are good? Less energy density (by weight or volume), a lot longer to charge, and provably more damaging to the environment (the environmental cost of making a 132 kWh battery pack is huge compared to the electrical energy needed to compress 52L of hydrogen).
There is another tank on that page, that stores 52L of hydrogen. That's about equivalent to a 132kW battery - double the typical Model 3. And the tank weighs in at 38 kg. My point stands - compressed hydrogen is MUCH more efficient space and weight-wise than batteries.
See above - hydrogen tanks and valving is really not that heavy. A couple hundred kg to carry the equivalent of a tonne or two of batteries. Hydrogen has ~75X the power density by weight - that leaves a BIG overhead factor for a tank or valving system. As far as infrastructure - we have one now, with tens of thousands of refilling stations all around.
Hey, I'm all for continuing to use gas and diesel! It's a great source. I am a firm believer that we are experiencing climate change, but that it is dominated by natural cycles - our little bit of CO2 in the air is not a driver of much of anything natural - just political.
However, hydrogen is quite a bit better than batteries. You said that
the same mass of hydrogen takes up a HECK of a lot more volume.
And once you factor in the mass of the containers and other hardware needed to secure hydrogen, the advantage per mass is no longer as clear either.
That is not correct. Hydrogen storage, as compared to battery storage, is about 60% more efficient by volume, and around 25X more efficient by weight. Batteries are volume and weight inefficient, kind of a "last resort" thing...
You would think so, but people protest trimming of nearby trees when it's obvious they are WAY too close. Bend a few of those in high winds, or have them break during a heavy wind and they'll brush the lines on their way down, potentially flaming for the last part of it.
The nice thing about Android is you can download and try lots of different launchers to make the UI as you want it. Google offers their own take on a UI, but they also enable it so you can make the UI as YOU want it.
Nope. You get about 9.7MJ/L for compressed hydrogen, and about 40% of that (4.3 MJ/L) for LiPo batteries. Hydrogen is much more efficient by weight and volume.
And if you need 700+ kg of tank to store your hydrogen - you're doing it wrong. Here's a massive 850L tank that would be equivalent energy storage to about 4800 kg of batteries - and it weighs 215 kg. Not even close.
Hydrogen has about 142 MJ per kg, about 3X that of diesel and gasoline. Which themselves are about 25X that of LiPo batteries (the best, mass-producible rechargeable batteries out there). Making hydrogen about 75X the energy density of the best battery packs. Batteries are terrible for aerospace uses, and even for vehicles where hydrogen could be recharged in a matter of a few minutes, requires a LOT less mass for motion (meaning more efficient and easier on the roads), and simpler to build (as you can use a fuel cell and then drive electric motors). Why would you want to carry around 800 kg of batteries when you could do 12 kg of hydrogen? The weight savings in terms of wear-and-tear on roads and tires is massive.
WTF are you smoking? Too low? Installed per regulations. It's OK to have them lower than the tips of the trees, provided the trees are far enough away. Or do you know more than the Bureau of Reclamation as far as power line installation goes? Or that the PG&E towers weren't built to CPUC code?
The International Maritime Organization's International Convention for the Safety of Life at Sea requires the Automatic Identification System (AIS) to be fitted aboard international voyaging ships with 300 or more gross tonnage (GT), and all passenger ships regardless of size.[6] Although AIS transmitters/receivers are generally called transponders they generally transmit autonomously
This establishes that the system is generally - in public/common in industry parlance - are called transponders. And what does AIS send? We find it sends
Message 1, 2, 3: Position Report Class A Reports navigational information This message transmits information pertaining to a ships navigation: Longitude and latitude, time, heading, speed, ships navigation status (under power, at anchor...)
So, a transponder, sending data out, about position. And it does so in NMEA 0183 standard format which is used for GPS systems. WAIT! That cannot be! Unpossible!
Transponder definition. Many of those devices respond to pings. And I am within range of my car right now - but I cannot see it (as it is in the garage). Proving your "point" patently false. Face it - GPS transponders are a thing, you can buy them, and the definition is well understood.
Most of the time the line doesn't break - but a tree branch falls across the line, catches on fire, then continues down to the ground. In these cases, the circuit breaker won't help - the circuit is never really broken or even disturbed, but the branches in the trees short the line to ground for a few milliseconds (before they burst into flame) and start the fire.
Never did that in Washington State. Of course, they also cut proper-width right-of-ways for the power lines, they weren't challenged on all cuts/trims. It was common to see trees taller than the power lines. You're flat out wrong.
Most of those experiments that cause surprise? Nope. They do the experiment because their guess (hypothesis) says the result may actually happen. They have an idea already (a theory) about what could happen, they do an experiment, and find out of their guess was correct.
Wow! CA is supposed to insulate their high voltage transmission lines like exactly ZERO other utilities around the world do! We are UBER progressive here!
With a branch touching a line, you won't get a loss of connection - you'll get a small (maybe an amp or two) ripple in current draw. Then the branch catches on fire, the spike disappears - and the tree begins to merrily burn. And your load never disconnected.
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Run the numbers yourself. A little 38kg, 52L tank holds about the same energy as 132 kWh of batteries (given that there are 277W per MJ). But that's OK - stay ignorant, my friend - stay ignorant!
Check the bottom tank on that page - 700 bar, 52L. Given there are 9.17 MJ/L for compressed hydrogen, that's about 476 MJ of energy. At ~278 Wh per MJ, that is equivalent to a 132 kWh pack - about double a Model 3. So a small, 38 kg tank has the same energy storage as a pair of Model 3 battery packs. Tell me again why batteries are good? Less energy density (by weight or volume), a lot longer to charge, and provably more damaging to the environment (the environmental cost of making a 132 kWh battery pack is huge compared to the electrical energy needed to compress 52L of hydrogen).
There is another tank on that page, that stores 52L of hydrogen. That's about equivalent to a 132kW battery - double the typical Model 3. And the tank weighs in at 38 kg. My point stands - compressed hydrogen is MUCH more efficient space and weight-wise than batteries.
See above - hydrogen tanks and valving is really not that heavy. A couple hundred kg to carry the equivalent of a tonne or two of batteries. Hydrogen has ~75X the power density by weight - that leaves a BIG overhead factor for a tank or valving system. As far as infrastructure - we have one now, with tens of thousands of refilling stations all around.
Hydrogen has a LOT more energy (about 75X as much) by weight than LiPo batteries. Changes things a bit, doesn't it?
Fuel cell. Incredibly efficient, extremely simple - and you get power right out. You don't need a reciprocating engine.
They have too much power now, at least that's what TFS stated. So if they have excess power - compression is irrelevant.
Hey, I'm all for continuing to use gas and diesel! It's a great source. I am a firm believer that we are experiencing climate change, but that it is dominated by natural cycles - our little bit of CO2 in the air is not a driver of much of anything natural - just political.
However, hydrogen is quite a bit better than batteries. You said that
the same mass of hydrogen takes up a HECK of a lot more volume. And once you factor in the mass of the containers and other hardware needed to secure hydrogen, the advantage per mass is no longer as clear either.
That is not correct. Hydrogen storage, as compared to battery storage, is about 60% more efficient by volume, and around 25X more efficient by weight. Batteries are volume and weight inefficient, kind of a "last resort" thing...
You would think so, but people protest trimming of nearby trees when it's obvious they are WAY too close. Bend a few of those in high winds, or have them break during a heavy wind and they'll brush the lines on their way down, potentially flaming for the last part of it.
The nice thing about Android is you can download and try lots of different launchers to make the UI as you want it. Google offers their own take on a UI, but they also enable it so you can make the UI as YOU want it.
Nope. You get about 9.7MJ/L for compressed hydrogen, and about 40% of that (4.3 MJ/L) for LiPo batteries. Hydrogen is much more efficient by weight and volume.
And if you need 700+ kg of tank to store your hydrogen - you're doing it wrong. Here's a massive 850L tank that would be equivalent energy storage to about 4800 kg of batteries - and it weighs 215 kg. Not even close.
Hydrogen has about 142 MJ per kg, about 3X that of diesel and gasoline. Which themselves are about 25X that of LiPo batteries (the best, mass-producible rechargeable batteries out there). Making hydrogen about 75X the energy density of the best battery packs. Batteries are terrible for aerospace uses, and even for vehicles where hydrogen could be recharged in a matter of a few minutes, requires a LOT less mass for motion (meaning more efficient and easier on the roads), and simpler to build (as you can use a fuel cell and then drive electric motors). Why would you want to carry around 800 kg of batteries when you could do 12 kg of hydrogen? The weight savings in terms of wear-and-tear on roads and tires is massive.
Are there alternatives to Android and Google tools? Yes? Then perhaps billions of people use them because they generally work well.
WTF are you smoking? Too low? Installed per regulations. It's OK to have them lower than the tips of the trees, provided the trees are far enough away. Or do you know more than the Bureau of Reclamation as far as power line installation goes? Or that the PG&E towers weren't built to CPUC code?
Someone is geometry-challenged! What does the height of the tree matter, if you can clear them far enough away from the power lines?
People tend not to continue to use things if they aren't, you know, useful.
The International Maritime Organization's International Convention for the Safety of Life at Sea requires the Automatic Identification System (AIS) to be fitted aboard international voyaging ships with 300 or more gross tonnage (GT), and all passenger ships regardless of size.[6] Although AIS transmitters/receivers are generally called transponders they generally transmit autonomously
This establishes that the system is generally - in public/common in industry parlance - are called transponders. And what does AIS send? We find it sends
Message 1, 2, 3: Position Report Class A Reports navigational information This message transmits information pertaining to a ships navigation: Longitude and latitude, time, heading, speed, ships navigation status (under power, at anchor...)
So, a transponder, sending data out, about position. And it does so in NMEA 0183 standard format which is used for GPS systems. WAIT! That cannot be! Unpossible!
Transponder definition. Many of those devices respond to pings. And I am within range of my car right now - but I cannot see it (as it is in the garage). Proving your "point" patently false. Face it - GPS transponders are a thing, you can buy them, and the definition is well understood.
Good thing the previous President never lied! Oh, wait...
Most of the time the line doesn't break - but a tree branch falls across the line, catches on fire, then continues down to the ground. In these cases, the circuit breaker won't help - the circuit is never really broken or even disturbed, but the branches in the trees short the line to ground for a few milliseconds (before they burst into flame) and start the fire.
Two billion Android devices and 3.5 billion searches a day. You're right - no one uses Google services. No one. Sad.
Never did that in Washington State. Of course, they also cut proper-width right-of-ways for the power lines, they weren't challenged on all cuts/trims. It was common to see trees taller than the power lines. You're flat out wrong.
Most of those experiments that cause surprise? Nope. They do the experiment because their guess (hypothesis) says the result may actually happen. They have an idea already (a theory) about what could happen, they do an experiment, and find out of their guess was correct.
Wow! CA is supposed to insulate their high voltage transmission lines like exactly ZERO other utilities around the world do! We are UBER progressive here!
With a branch touching a line, you won't get a loss of connection - you'll get a small (maybe an amp or two) ripple in current draw. Then the branch catches on fire, the spike disappears - and the tree begins to merrily burn. And your load never disconnected.