Turned out that they let the cars idle all day with the AC on while they were at work.
It's a marketing gimmick.Saw this story on the BBC News today.
BBC NEWS | Business | Prius 'to be part solar-powered'
The redesigned Prius will have solar panels on the roof, which will supply part of the two to five kilowatts needed to power the air-conditioning unit, the Nikkei business daily reported.
It probably has a unique design, although it runs off the DC/AC inverter. But the compressor makes an impressive amount of noise when it's turned on at startup before the engine kicks on. We find it easier to open all the windows, get moving, and then start the A/C.I suspect the unique electric AC compressor in the Prius is the source of this strange rumor.
Toyota seems absolutely paranoid about recharging the HV battery from anything other than the car's engine or regenerative braking. Even the plug-in mods have to trick the car's battery-charging controller (risky) or replace it (which invalidates the warranty). The controller doesn't let the high-voltage battery deep-cycle like a marine system, so any attempt to run the A/C would eventually just fire up the internal combustion engine.But perhaps they could generate say 100 watts max, which would be used to top up the hybrid batteries during a day of sun. Then perhaps the owner could press a button on the keyfob to start the electric AC compressor, which would run for a few minutes off the solar energy stored in the hybrid batteries, while the owner walks out to the car.
But the compressor makes an impressive amount of noise when it's turned on at startup before the engine kicks on.
Toyota seems absolutely paranoid about recharging the HV battery from anything other than the car's engine or regenerative braking. The controller doesn't let the high-voltage battery deep-cycle like a marine system, so any attempt to run the A/C would eventually just fire up the internal combustion engine. If the HV battery is running around 200 VDC then that solar panel would have to have some real horsepower...
I remember when the 2004 Prius was about to be introduced. In feature lists you often saw something like "Electric Air Conditioning system can be run with the engine off". Many people assumed this meant that one could set the car to cool the interior before starting the engine, but in fact that is not possible. ....
Oh, no, there's a big difference. They're both running but the A/C compressor windup makes me think that the coolant pump is about to throw a turbine blade through the hood... then I realize that warm air is blowing on my face.I wonder if you are thinking of the pump that moves the fluid from the "cat warmer" (essentially a thermos bottle) back into the engine just before starting up.
. . .how realistic is it to have a turbine powered by wind in the car. . . .The big problem I see with it is that the first law of thermodynamics may come into play: The drag caused by the car done to the surroundings loses more energy than is gained by the wind turbine...