31–40 of 172 posts
Triple junction GaAs based panels for a whole 860 watts of power in full sun at the right angle, no mention of cost. Anybody know how much a panel like that goes for per watt now days?
For comparison I can buy pallet loads of 72 cell, 370W panels built from high efficiency mono Si cells for under $0.55/watt stc.
I'll start thinking Toyota is serious about EVs when it actually starts saying so -- only recently it said the future are hybrids . Yeah, right. Good luck with the bankruptcy/firesale in 10 years Toyota!
I live in a pretty hot city (My car's outside thermometer showed 48°C yesterday at midday). The extended range is nice and all, but if somebody makes a car that can run the AC without running/draining the battery while it's parked, even if it's just a little to keep the car interior at 35°C or so, I would, without exaggeration, buy it the day it's released here. Hell, I'd consider it even if it would just keep the fa…
how much power does an AC use (say on medium settings) ?
It also says that the most efficient photovoltaics yield 175W per square meter. (Though I've seen figures as high as 200W.) https://en.wikipedia.org/wiki/Solar_panel#Efficiencies
I'll start thinking Toyota is serious about EVs when it actually starts saying so -- only recently it said the future are hybrids . Yeah, right. Good luck with the bankruptcy/firesale in 10 years Toyota!
I'm sure if they really want to get serious about EV's they can find a scrappy little startup to acquire. I hear there's at least one that could use their production expertise that is struggling each quarter to turn a profit.
Imagine the future when you fight for the sunny ones.
They covered the car, including the back window, in triple-junction solar cells. Last I heard, those were made of expensive stuff like indium gallium arsenide junctions. They were popular on satellites because they do really really well outside of atmosphere and much worse in shaded and indirect light conditions than silicon. I'd like to know how much those cells really cost and how much power is left when you can se…
Until then I think triple junction GaAs is going to see the most use in experimental UAVs funded by research money, and satellites.
I live in a pretty hot city (My car's outside thermometer showed 48°C yesterday at midday). The extended range is nice and all, but if somebody makes a car that can run the AC without running/draining the battery while it's parked, even if it's just a little to keep the car interior at 35°C or so, I would, without exaggeration, buy it the day it's released here. Hell, I'd consider it even if it would just keep the fa…
how much power does an AC use (say on medium settings) ?
Running on Max A/C, the screen reads just under 1/8 gal/hr. With the A/C on and with the fans at 50%, consumption is a little less but still around 1/8 gal/hr. Consumption drops too low to get a reading when A/C is off with fans 50%.
I live in a pretty hot city (My car's outside thermometer showed 48°C yesterday at midday). The extended range is nice and all, but if somebody makes a car that can run the AC without running/draining the battery while it's parked, even if it's just a little to keep the car interior at 35°C or so, I would, without exaggeration, buy it the day it's released here. Hell, I'd consider it even if it would just keep the fa…
Sounds like this “dog mode” does exactly what you’re wanting. I see a new Tesla in your future :)
I live in a pretty hot city (My car's outside thermometer showed 48°C yesterday at midday). The extended range is nice and all, but if somebody makes a car that can run the AC without running/draining the battery while it's parked, even if it's just a little to keep the car interior at 35°C or so, I would, without exaggeration, buy it the day it's released here. Hell, I'd consider it even if it would just keep the fa…
how much power does an AC use (say on medium settings) ?
[1]: Like a fridge. Refrigeration systems are most efficient at full power. IIRC it's due to the restrictor plate separating the hot and cold radiators- it's designed to work at a certain rate of flow, so you'll get gas and liquid mixing at lower power.
Earlier quoted context omitted.
how much power does an AC use (say on medium settings) ?
Wikipedia says 3kW https://en.wikipedia.org/wiki/Automobile_air_conditioning#Po... It also says that the most efficient photovoltaics yield 175W per square meter. (Though I've seen figures as high as 200W.) https://en.wikipedia.org/wiki/Solar_panel#Efficiencies
That's also the peak power, and a motorized A/C will instead be turned on and off leading to a much lower power draw that also depends less on the peak power. Typically a 50-30% duty cycle, so 200-300 watts very roughly. More depending on the insulation, sun, and outside temperature.