R1S A/C at full blast uses about 5 kW

[Rgrin]

Plugged into 7 kW charger, about 30 min to go. Remotely turn on A/C to pre-cool, as cabin at 120 degF. Give it a couple minutes to get up to full blast. Charge time remaining goes to 1h43. So roughly 5kW of the 7 kW being used for A/C.

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[Franksmartin]

Not too surprising, 7kw is pretty slow.

 

[Marchin_MTB]

Hmmmm. I’d like to cross check this with the energy menu. You have to get in the truck to see it but it shows you the real time breakdown of power allocated to battery vs. other things (visual bar plot of sorts).

the air conditioned volume of the R1S must be about twice of the R1T so it should take more power to heat/cool. However, 5kW is like a home AC almost so I’m surprised at that value.

 

[Rgrin]

I was surprised too. The A/C was clearly designed for the R1T, as it the cooling power is too low for the R1S (as reported elsewhere in the forum, and I have experience myself). Now this is during the initial cooling phase, where it sounds like it is going to explode, so it is going flat out. Still, 5 kW was surprising. My measurement is indirect, so it is just a rough estimate. Will be interesting to see what the actual breakdown is.

 

[jjswan33]

I would guess that some of that energy was going into battery cooling, given the cabin temperature I am sure it was also hot. It might have just taken the truck a minute to calculate.

 

[nukem384]

I saw the same thing, about 4kW. I had just installed a new Tesla wall connector myself and was testing it. The MPH was 15MPH and I was like "WTH? It's supposed to be 25MPH". Then I realized the AC was on full blast cause it was like 90 in the garage, turned it off and up to 25MPH it went.

 

[Amy]

I don't know about that... my 4ton/48,000btu home condensing unit pulls 4k watts when running.

 

[HaveBlue]

I don't know about that... my 4ton/48,000btu home condensing unit pulls 4k watts when running.

Which is 36K btu. Cars also use compressors between 24K-40K. We are just used to gas motor propelling the compressor. 2 hp / ton of cooling. They generally don't run continuously but a car has a lot of glass and virtually no insulation.

 

[Amy]

Which is 36K btu. Cars also use compressors between 24K-40K. We are just used to gas motor propelling the compressor. 2 hp / ton of cooling. They generally don't run continuously but a car has a lot of glass and virtually no insulation.

12,000btu per ton, it just seems hard to believe that a vehicles ac system outputs the same as a 2000sqft home system.

 

[HaveBlue]

12,000btu per ton, it just seems hard to believe that a vehicles ac system outputs the same as a 2000sqft home system.

Yea for sure. A car uses the same amount of energy as a house in a year. If every house has two cars, we need to shift 2/3 of the energy usage from the street to the grid for vehicle transportation. Although, in California, about 60% of electricity usage is pumping water from one place to another I think. 6M-9M Mega watt hour

 

[IGR]

12,000btu per ton, it just seems hard to believe that a vehicles ac system outputs the same as a 2000sqft home system.

Not really the same, Rivian is practically greenhouse on wheels.

 

[Amy]

Not really the same, Rivian is practically greenhouse on wheels.

How are watts and BTUs not the same?

 

[IGR]

How are watts and BTUs not the same?

Because you would need more energy to achieve and maintain same level of comfort in a Rivian (or any vehicle for that matter) as you would in a home. Therefore it is not an apples to apples comparison.

 

[Amy]

Because you would need more energy to achieve and maintain same level of comfort in a Rivian (or any vehicle for that matter) as you would in a home. Therefore it is not an apples to apples comparison.

So if I take a Rivian ac system out and replace my house system with it it would cool my home the same or better is what your saying?

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