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Old 07-14-20, 05:25 PM   #15
AirConditioner
Helper EcoRenovator
 
Join Date: Apr 2015
Location: US
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Quote:
Originally Posted by NiHaoMike View Post
He's building an EV or plug in hybrid, a different use case. Of course there needs to be a sizable battery for that application.
A "future" EV. And that means less room and cargo capacity for thermal mass. Just drop it. You cannot have thermal mass in a vehicle. Jesus...you seem like a smart guy, but you're just talking stupid here. Lithium batteries and fossil fuel make more compact cold storage than anything else...except maybe a bottle of CO2.


Quote:
Originally Posted by jeff5may View Post
At that capacity, I don't know if the price difference would justify a vrf unit. Sure, you'd save money for a smaller power inverter, but the half ton window shakers are selling for around 75 bucks used here. Maybe 150 or so brand new from the usual box stores.
That seems to be an issue I run into a lot. Those cheap little units are SO hard to beat for the parts inside! I've been able to start a 5k BTU from as small as an 800 watt very old modified sine inverter. The compressor makes an odd humming noise on the inverter but I'm sure it would work better with a 2-3kw pure sine wave.

I have heard people claim that when using compressors that were not designed to be mounted on vehicles they die early because they can't handle the vibrations as well. I've seen this as a complaint on RV forums with mini splits. With that said I have no idea what would make an "RV" compressor different, but I know they cost a lot more.

I really like the new DC powered compressors I've seen from China...but, they still seem to cost $500 or more for very very small, incomplete system.

Also if someone is doing something like a van, they're making pure DC mini splits now for direct solar applications in pretty small sizes. Gotta pay to play though.
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