3 ms·
> but keep in mind that if you can pump ten gallons of gas in a minute you're effectively drawing the equivalent of something like 20MW, so in the context of ve
by saalweachter 3y ago
> but keep in mind that if you can pump ten gallons of gas in a minute you're effectively drawing the equivalent of something like 20MW, so in the context of vehicle refueling it's not so crazy
If 15 Teslas pass through a stretch of road per minute with full 100kWh battery packs, you could also describe that as 90MW of current, but it's also not really.
- jorvi 3y agoI always forget just how energy dense petroleum and its derivatives are..
- matthewfcarlson 3y agoWhen charging, the Tesla shows you a little miles per hour figure (how many miles of range you gain per hour of charging) and it can often reach 1000 or so on the super chargers I use frequently. It’s fun to calculate the miles per hour of gas (around 12,000).
- athenot 3y agoThis is true. Though the electric batteries do have the advantage of having already paid the "thermodynamics tax". Some of the energy in gas will go towards heat losses; energy that cannot be converted to movement.
- davrosthedalek 3y agoAnd they are very efficient over a much larger rpm band. But the real win is the energy recovery from regenerative breaking.
- mensetmanusman 3y agoBut that thermodynamic tax is a negative in very cold climates where the electric vehicle will see a major change in total travel distance compared to ICE.
- iknowstuff 3y agoHeat pumps make it more efficient to convert the fuel to electricity at a big, efficient power plant, and then to heat, than to burn the fuel itself for heat in an internal combustion engine (or at home for that matter) It’s overall a net positive.
- mensetmanusman 3y agoYes, but note that this type of 'overall thinking' sometimes has interesting consequences. Eg overall globalization raises wages, but it decimated rural economies in the west and caused a lot of social harm leading to the rise of populism. The odometer shock that will start hitting low wage earners forced to migrate to EV may have less important but similarly surprising unintended consequences.
- davrosthedalek 3y agoYes. One of the usual YT channels had this interesting picture. Gas mileage is miles per gallon. Or in this case, do it the European way: l/100km. The unit of that is an area. Typically a rather small one, ca 0.1mm^2. That's the area of a trench you have to dig along your path if you want to supply your car from the trench instead of your gas tank.
- NickM 3y agoThat doesn’t make any sense to me. The amount of fuel a trench can hold is its volume, not its area.
- somewhat_drunk 3y agoProbably means cross-sectional area.