Environment & Energy

PamW

(1,825 posts)

12. Taxing the batteries.

Sat Mar 3, 2012, 09:41 PM

Mar 2012

Whether you trigger by internet or not; the Laws of Physics dictate how much work from the battery one needs to expend to move the heat from inside the car to outside.

That's going to deplete the battery. There's no getting around the Physics that moving heat is an energy intensive process because of the 2nd Law of Thermodynamics.

It doesn't matter how you order it done; the Internet can't magically make heat move from lower temperature to higher temperature without significant work provided by an energy source.

Nicolas Carnot strikes again!

PamW

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Comparing Energy Costs per Mile for Electric and Gasoline Vehicles [View all] kristopher Mar 2012 OP

John Michael Greer on the electric car chaska Mar 2012 #1

There so many holes in that it would be hard to start madokie Mar 2012 #3

I was thinking that it would have been nice if Greer had included some numbers GliderGuider Mar 2012 #4

That same article was in the paper that the local rural electric co-op puts out madokie Mar 2012 #5

WRONG!!!!! PamW Mar 2012 #9

CORRECT!! PamW Mar 2012 #11

See post #25 kristopher Mar 2012 #37

Nothing there PamW Mar 2012 #41

It categorically refutes your conclusion kristopher Mar 2012 #43

Comparison of CO2 emissions by various technologies under differing policies kristopher Mar 2012 #25

Another factor to consider when looking hybrid/elecrtic vehicles is climate. liberal N proud Mar 2012 #2

I think that most if not all heat the seats and steering wheel rather than the air in the vehicle madokie Mar 2012 #6

You aren't going to get away with cooling the seats only in the south.. Fumesucker Mar 2012 #7

Most of the time you'd pre-heat or pre-cool the EV before unplugging it txlibdem Mar 2012 #8

Taxing the batteries. PamW Mar 2012 #12

How is it taxing the batteries when the car is still plugged in? txlibdem Mar 2012 #13

You said the EV's would only have cooling for the seats and wheel.. Fumesucker Mar 2012 #15

Draw well under a kilowatt. Heat is the main killer. Even AC isn't too bad. nt dmallind Mar 2012 #17

The average blow dryer is about a kilowatt.. Fumesucker Mar 2012 #18

Well jeez I can believe you or my car's specs and consumption data dmallind Mar 2012 #26

Have you actually had it in really hot and humid weather yet? Fumesucker Mar 2012 #28

In Feb-Mar? No - but try this dmallind Mar 2012 #29

It looks like 11 miles is cut from your range if I'm reading the display correctly.. Fumesucker Mar 2012 #30

The guessometer is called that for a reason. I get 4.6m/kW. dmallind Mar 2012 #31

Ah, some numbers to work with.. Fumesucker Mar 2012 #33

EXACTLY!!! PamW Mar 2012 #35

Perhaps you could document the draw of a modern auto AC compressor. kristopher Mar 2012 #36

I found this article about electrically driven compressors for cars.. Fumesucker Mar 2012 #38

So let's say this wild scenario is actually real. dmallind Mar 2012 #39

Oh, a misunderstanding. That was not me who posted that. txlibdem Mar 2012 #19

Oops.. Fumesucker Mar 2012 #20

Don't be. When I became disabled I had to cancel my order for the Nissan Leaf txlibdem Mar 2012 #21

Sorry to hear of your troubles.. Fumesucker Mar 2012 #24

No worries txlibdem Mar 2012 #34

My scenario PamW Mar 2012 #42

Granted, that would drain energy from the battery txlibdem Mar 2012 #44

I was just relating what I've read in their promotionals madokie Mar 2012 #22

WRONG!!!!! PamW Mar 2012 #10

watch this vid for a more realistic and optimistic take greenman3610 Mar 2012 #14

Electric vehicles are the only ones that will get cleaner as they get older txlibdem Mar 2012 #45

And the cheapest line is a high estimate dmallind Mar 2012 #16

You're a good driver. tinrobot Mar 2012 #23

Do you have hills? dmallind Mar 2012 #27

It's a mix... tinrobot Mar 2012 #32

Not real familiar with the BMW in great detail I'm afraid dmallind Mar 2012 #40