Timeline for Can a car AC unit be run on just the car battery?
Current License: CC BY-SA 3.0
8 events
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| Apr 24, 2016 at 11:47 | comment | added | saurabh64 | @IanRingrose Good point there! | |
| Apr 23, 2016 at 18:12 | vote | accept | saurabh64 | ||
| Apr 23, 2016 at 12:03 | comment | added | Ian Ringrose | You are missing one very important factor, anything that is directly driven from the engine needs to have the gearing design so it gets enough power at low engine revs, therefore at normal or high revs the compressor gets more power than is needed. Hence an electric compressor can give better MPG. Likewise with brake pump etc. | |
| Apr 22, 2016 at 21:39 | comment | added | JPhi1618 | @MasonWheeler, ok, yea, electric heat is the biggest power user, but in my mind I lump that in with the HVAC system. Electric heat can use 100A all by itself - more than everything else combined. | |
| Apr 22, 2016 at 21:34 | comment | added | Mason Wheeler | Interestingly, my power bills tend to be significantly higher in the winter (when I'm running the electric heaters) than in the summer (when I'm running the AC). | |
| Apr 22, 2016 at 17:53 | history | edited | JPhi1618 | CC BY-SA 3.0 |
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| Apr 22, 2016 at 17:51 | comment | added | rpmerf | Currently, you take kinetic energy from the engine, and transfer it to kinetic energy at the compressor. To run it from an electric motor, you would need to do kinetic at the engine, to electric at the alternator, then back to kinetic at the motor for the compressor. Each conversion has losses. This means the alternator would have to work harder to make up for those losses and take more power from the engine. | |
| Apr 22, 2016 at 17:36 | history | answered | JPhi1618 | CC BY-SA 3.0 |