Battery based vehicles of today and tomorrow pt 2

[txdon]

If the compressor was in another room then the first room would not be thermally isolated.

You are right I was just thinking of the electric cord not the freon line which would also transfer heat out through the line that was not in the room. So, with the compressor back in the refrigerator and energy (heat) coming in to power the compressor definitely the room would be warmer. Remind me, why do we care about the refrigerator in an EV thread?

 

[txdon]

Does an EV with a fully charged battery weigh more than one with a depleted battery?
If the answer is YES, by how much?

 

[Grumpycat]

An impossible situation leads to impossible solutions which are basically useless!

So you have no formal training in STEM. Not a question.

We commonly use a mythical ideal gas to analyze and understand systems knowing full well we do not have an ideal gas. However gasses often behave almost like an ideal gas.

We can not make a perfectly insulated thermal chamber, but using one in the problem statement sets boundaries on the solution. If the chamber was not ideal then we’d need to know the external temperature and the internal temperature to know which way thermal energy was moving. Being a perfectly insulated eliminates those variables.

 

[Grumpycat]

Does an EV with a fully charged battery weigh more than one with a depleted battery?
If the answer is YES, by how much?

No. Battery hosts a reversible chemical reaction. No mass moves in or out.

 

[groundcover]

 

[MossRoad]

 

[Egon]

No. Battery hosts a reversible chemical reaction. No mass moves in or out.

It will depend on the type of battery

 

[/pine]

If you have a refrigerator in your EV...how much does it limit the range of the charge...??

 

[ovrszd]

If you have a refrigerator in your EV...how much does it limit the range of the charge...??

That's actually a very good question!!! And if you have a furnace in your EV...how much does it limit the range of the charge???

 

[MossRoad]

It will depend on the type of battery

I've read that a charged battery weighs more than a discharged battery, but the amount is so small that there are not measuring devices capable of detecting the change. It's only measurable by mathematical formula.