Electric Vehicles - Air Con

[W&KO]

Would I be right that a 12v compressor would run the system?

Is there is off the shelf similar

[Homestar]

Yep, they are fairly readily available - they draw a **** load of current.

Plenty out there like this - StreetFX Motorsport and Graphics – RENCOOL MD18 12v OR 24v Electric Air Conditioning Compressor For Automotive/Race or Construction equipment – As used in WTF-86 (http://www.streetfx.com.au/product/md18-12v-or-24v-electric-air-conditioning-compressor-for-automotiverace-or-construction-equipment-as-used-in-wtf-86/)

[manic]

You can get a 12v ac compressor.

Tesla run heater matrix and AC comp directly off high voltage battery pack. As high as 400v

What's the application?

[Tombie]

Yep, they are fairly readily available - they draw a **** load of current.

Plenty out there like this - StreetFX Motorsport and Graphics – RENCOOL MD18 12v OR 24v Electric Air Conditioning Compressor For Automotive/Race or Construction equipment – As used in WTF-86 (http://www.streetfx.com.au/product/md18-12v-or-24v-electric-air-conditioning-compressor-for-automotiverace-or-construction-equipment-as-used-in-wtf-86/)

Don’t they just!

Certainly wouldn’t want to leave it running the vehicle off.

[manic]

Don’t they just!

Certainly wouldn’t want to leave it running the vehicle off.Depends on the set up. You can sleep in the back of a Tesla and have the AC running all night. Uses up a few measly percent [emoji41]

[BradC]

Depends on the set up. You can sleep in the back of a Tesla and have the AC running all night. Uses up a few measly percent [emoji41]

As it would at night when the heat load is a couple of hundred watts and you are sleeping on a 60KWh battery.

Frankly at 400V and 60KWh a Tesla battery would power my House ducted A/C for close to 3 days (72 hrs) in the heat of summer. I could hook it straight up to the PFC rectified bus and just switch it on. I'd have a bugger of a time driving the house anywhere though.

BLDC compressors are the future as the cornerstone of a fully hermetic automotive system with no potential for leaks. That's a relatively long way off however.

[scarry]

BLDC compressors are the future as the cornerstone of a fully hermetic automotive system with no potential for leaks. That's a relatively long way off however.

Full hermetic systems have been around for years,and yes they can all leak refrigerant,no matter how well they are built......

[goingbush]

EV don't use the 12V supply for AirCon, The 12V battery is minuscule and is used for lights / contactors etc , if the 12V battery goes flat the EV is dead.

How does air conditioning work in an electric car? | AutoGuru (https://www.autoguru.com.au/car-advice/articles/how-does-air-conditioning-work-in-an-electric-car)

[goingbush]

Here we go, even got a picture of a Defender in the ad

320V lithium battery vehicle compressor (http://www.wurzcompressor.com/en/product/320V-lithium-battery-vehicle-compressor.html)

[roverrescue]

Dometic do 12V and 24V fully configured AC units for the cab
Their 12V unit eats 40A on min setting

Dometic's truck air conditioner adds a new 12-volt version | Dometic (https://www.dometic.com/en-au/au/news/aunz/dometic-rtx-12-v)

On my old 130Tdi I had considered plonking one of these in the roof
No different to normal AC you’d just set it so it can only operate with engine running
Much easier to run a couple of cables than the plumbing and wiring of a bet driven compressor.

S

[W&KO]

You can get a 12v ac compressor.

Tesla run heater matrix and AC comp directly off high voltage battery pack. As high as 400v

What's the application?

No application in mind.....

I spotted an EV recharging the other day, it was middle of the day and there was two two people inside with the windows up...so I assumed the A/C was on.

[goingbush]

Beauty of EV is you can have A/C running without an Infernal Combustion Engine running,
Tesla have Dog Mode which keeps the car cool & Dog alive whilst owner is having his Latte !!

[Tombie]

Beauty of EV is you can have A/C running without an Infernal Combustion Engine running,
Tesla have Dog Mode which keeps the car cool & Dog alive whilst owner is having his Latte !!

I’ll find out when ours finally arrives...

[DiscoMick]

Don't know the answer to your question, but I'm investigating generators at the moment and I'm told I need about 1400 watts to run the air-con in our camper off a generator, to keep The Navigator in a state of happy coolness.
Given the generator would also be powering a battery charger and a fridge freezer, it appears I need a Westinghouse iGen 2500 generator, which will settle to about 2000 or so and comfortably power everything. The much-praised Honda 2000 doesn't settle high enough.
Not sure if that helps you though.

[Tombie]

Mick the Honda is now 2.2 and should easily do what you like.

[roverrescue]

DiscoMick

If you haven’t “built” the system yet
I would consider a 24V aircon and use an Engel fridge (12/24)

The AC would be only 500W or so and on 24V Engels sip power
Setup a 24V bank and solar and you’ll get away with a 1kVa genie to 24V charger and done

S

[DiscoMick]

DiscoMick

If you haven’t “built” the system yet
I would consider a 24V aircon and use an Engel fridge (12/24)

The AC would be only 500W or so and on 24V Engels sip power
Setup a 24V bank and solar and you’ll get away with a 1kVa genie to 24V charger and done

SThanks, but the air-con is already in the camper.

[DiscoMick]

Mick the Honda is now 2.2 and should easily do what you like.Thanks, but I've been through this with an electrician friend and we've chosen this Westinghouse because it settles at 2200 watts, is light and quiet and it's a lot cheaper than the Honda, but has better performance. The whole Westinghouse range is impressive actually. We're over-speccing a bit, as there is a Westinghouse 2200 which would do the job, but it operates at 1800, so for $200 extra we might as well have the extra grunt to operate at 2200.

iGen2500 - Westinghouse Power (https://www.westinghouseoutdoorpower.com.au/product/igen2500/)