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Old 08-24-2018, 04:00 PM   #11 (permalink)
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How about something like this?
https://www.alibaba.com/product-deta...e88f2b3fMXcehC

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Old 08-25-2018, 04:02 PM   #12 (permalink)
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I was incorrect in my OP it won't run off 24v as it is run directly off the H.V. battery.
I would need a controller to run the compressor motor, I had thought about utilizing the inverter/converter assy out of the Prius as well, however I believe I would need to basically use all the wiring out of the Prius to pull that off due to H.V. ecu, compressor ecu, ...etc.

However what about an option like this?
https://www.alibaba.com/product-deta...57685ee1sGGyEG
Run from it's own 12v battery with Isolator fed from 200a alternator?
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Old 08-25-2018, 05:19 PM   #13 (permalink)
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After alternator losses, putting the electricity in the battery and taking it back out, I'd be surprised if it were 25% as efficient as a belt-driven pump, unfortunately.
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Old 08-25-2018, 09:21 PM   #14 (permalink)
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Those 12 Volt (or 24 - 48 - 72 Volt) compressors linked to on alibaba run in the range 3500 to 8500 btu/h (for the 72 Vdc version at 770 W).
Cars, generally have an A/C between 50,000 and about 60,000 btu/h.
I don't know much about the Prius electric compressor, but I don't hear a lot of complaints. Toyota spec. says the compressor consumes 4500 watts. About 7 of those Zhejiang BOYARD units.
-mort
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Old 08-28-2018, 08:46 AM   #15 (permalink)
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I can help you with the coding.

What have you decided to do in light of this new information?



I am not %100 sure if this will work, but let me try to “push” my idea to you.
Treat the AC load the same way as the hybrid cars treat the battery. What you would need to do is, activate the AC clutch only when you are applying brakes or trying to do engine braking. This way your AC has virtually no load on your engine when it is trying to do its work. Depending on your driving conditions, it could be advantageous to increase the amount of coolant in the AC loop.
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Old 08-28-2018, 04:01 PM   #16 (permalink)
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Quote:
Originally Posted by mort View Post
Those 12 Volt (or 24 - 48 - 72 Volt) compressors linked to on alibaba run in the range 3500 to 8500 btu/h (for the 72 Vdc version at 770 W).
Cars, generally have an A/C between 50,000 and about 60,000 btu/h.
I don't know much about the Prius electric compressor, but I don't hear a lot of complaints. Toyota spec. says the compressor consumes 4500 watts. About 7 of those Zhejiang BOYARD units.
-mort
But it also runs at 208V :-/.
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Old 08-28-2018, 06:41 PM   #17 (permalink)
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Even a big one for 312VDC (?!)

Wonder what that costs.
-mort
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Old 08-29-2018, 02:13 PM   #18 (permalink)
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You should probably look at other vehicles with start stop systems that also have E compressors to give you ac with the engine off. Would be more in line with what you want to do.

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