I was considering the same problem on my way to work. All EV's should really have heat exchanger on the intake air pr default. The smallest i could find are Unoklima, they are meant for residential ventilation. they work by cycling the air back and forward over the heat exchanger. So first the exhaust air heat up the thermal mass, then the fan is reversed and fresh air is drawn back in over the heat exchanger. Maybe a unit like that could be mounted by the cabin air exhaust, i think is is in the boot somewhere.
I was thinking of the cabin air exhaust as a good location as well. I don't know why these devices don't get used more in RV's or even residential bathrooms ( as compared to just venting heated moist air outside). Maybe it would work for capturing wasted heat from clothes dryer exhaust too! I looked at the Unoklima website, also an interesting concept. I wonder which is the more efficient technique... Thanks for the information and suggestion!
Here's a dumb thought of mine. How does the vehicle keep air fresh when running the ac? Is it just constantly losing cooled/heated air and replacing it with fresh air from outside? I suspect that must be the case but it bears asking
I was considering the same problem on my way to work. All EV's should really have heat exchanger on the intake air pr default.
The smallest i could find are Unoklima, they are meant for residential ventilation. they work by cycling the air back and forward over the heat exchanger. So first the exhaust air heat up the thermal mass, then the fan is reversed and fresh air is drawn back in over the heat exchanger. Maybe a unit like that could be mounted by the cabin air exhaust, i think is is in the boot somewhere.
I was thinking of the cabin air exhaust as a good location as well. I don't know why these devices don't get used more in RV's or even residential bathrooms ( as compared to just venting heated moist air outside). Maybe it would work for capturing wasted heat from clothes dryer exhaust too! I looked at the Unoklima website, also an interesting concept. I wonder which is the more efficient technique... Thanks for the information and suggestion!
Here's a dumb thought of mine. How does the vehicle keep air fresh when running the ac? Is it just constantly losing cooled/heated air and replacing it with fresh air from outside? I suspect that must be the case but it bears asking