I haven't finished watching the video yet, but with this system, do residents have the ability to determine how hot they want their homes? If i wanted 75 degrees and my neighbor wanted 70, would be both be able to do that?
I'm pretty sure he's retired or something. Driving 6-7-8 hours every day means he doesn't have much going through his life. Unless he's a "Transporter"😅. Most people have better things to do than driving around, aimlessly.
One million km and had to replace 13 motors!!! Wtf? Arent EVs advertised as "amazing" and "incredible" and you only need to change wipers etc. Yet here we have a car where motors in average managed to get around 80k km. Shite some Fiats and Peugeots can do 300k with single ICE, and that with all the "bad" things EVs aren't supposed to have like oil changes, belts etc... What a nonsense. If this car is something special then please do a article on Mercedes with as many engine changes, it would last tens of millions of kilometers.
Anyone familiar with Only Fools and Horses will know this guy is Trigger, he had the same brush for 20 years and said “This old broom has had 17 new heads and 14 new handles in its time.” Same principle with this Tesla
My feeling is that electric power is good just for gliders. Anyway, in the ES-30 case one problem has a rather easy solution: How to de-ice the part of the wings between the engines, by passing the cables behind the leading edge.
3 battery changes I think he said. When the first battery dies that’s how long it lasted - you can’t count the frame in my opinion. Those batteries are expensive too.
(1) In drones, it is common to see take-off and landing using electricity generated by gasoline-powered auxiliary generators. Since this aircraft has 2 APUs, why not use them to generate the extra power demand for takeoff and climb? (2) I believe that the use of batteries is a temporary solution, until the technology of generating electricity through hydrogen cells is more mature.
Sorry but a 737 APU is 90kw each main engine is the equivalent thrust of about 40 MW . A small aircraft would have a much smaller electrical demand so the power output of the APU would be minimal compared to the main engines. Storage of hydrogen in aircraft is tricky involving cryogenic refuelling. NH3 might be a better option as this can be liquified at reasonable pressures and would burn fine in a turbine with modifications to the fuel injection.
Yes, 1 kWh of electricity generates 4 kWh of heat, that is why heat pumps are efficient. The explanation resides in the fact that a large part all of that 1 kWh of electricity is consumed for the mechanical work of the compressor, while the heat is generated by having the gas (refrigerant) compressed, plus the fact that a part of those 4 kWh of energy at the end are gained by capturing heat from the primary medium and absorbing it into the refrigerant.
You use 1kw of energy to run the process (machine) that will steall energy from medium (water/air/ground). You are not making energy up, you just steal heat from outside and bring it "inside" peoples homes as hot water. And this proces eats up 1kw of energy.
The refrigerant is liquid before the expanaion valve not after. If you havd liquid between the expansion valve and compressor youll pump liquid in the compressor which isnt compressible, breaking ghe compressor
WTF is district heating? Is this a word we have in America? Like Washington, DC (district of Colombia)? In America, each house usually has its own HVAC equipment.
I wonder how possible it would have been to have both a city-wide heating system and citywide cooling system using the same plant for transfer of energy
Air-source heat pumps can use between 545 and 7,500 watts of electricity. Mini-split heat pumps can use between 500 and 1,500 watts per hour, with an average of around 800 watts. The size of the unit is a key factor in determining how much electricity it will use.
Fabulous! If only all areas of the world can work towards this goal, we would really be in better shape for the future, eh? (It is expensive of course, and some areas couldn’t afford it at first, but maybe with time costs would go down, and perhaps too, grants could subsidize some of it too?) Thanks for the great video! 💜
Very interesting video. I would just suggest that a quieter place for most of the interview would have been a good idea. I found it hard to understand what was being said because of the loud background noise (I turned on the closed captions).
I'm starting my second career as a commercial HVAC technician and I'm working on a startup to make indoor gardening facilities more efficient. I was able to easily follow the discussion here and I'm impressed with both the clarity and detail you were able to achieve in this video. Thank you!
