 Electric AC compressor |
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| rgalla9146 |
 May 18 2016, 05:19 PM
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Advanced Member  Group: Members Posts: 4,950 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None 
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Anyone here have experience with self contained 12V AC compressor ?
Mounts remote from engine, driven by electric motor. Seems it might be a way to have AC on a 6 conversion. Jegs sells them in two capacities. Pretty spendy. |
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| r_towle |
May 18 2016, 09:55 PM
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Boating world has made some great progress in sure small heat/AC units running off 12 Vdc.
Those are sized to service large cabins maybe ten time the size of a 914 cabin. From what I have read, these are just how it's done now. Taking that design and scaling it down...I don't see any reason why it would not work fine....just need to see the power requirements. Heating and cooling with electricity is not magic, it takes power to make heat and cooling... |
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| Gunn1 |
May 19 2016, 12:17 PM
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Senior Member Group: Members Posts: 1,021 Joined: 14-February 16 From: Minnesota Member No.: 19,670 Region Association: None |
QUOTE(r_towle @ May 18 2016, 10:55 PM)  Boating world has made some great progress in sure small heat/AC units running off 12 Vdc. Those are sized to service large cabins maybe ten time the size of a 914 cabin. From what I have read, these are just how it's done now. Taking that design and scaling it down...I don't see any reason why it would not work fine....just need to see the power requirements. Heating and cooling with electricity is not magic, it takes power to make heat and cooling... That being said, when you increase the output of the alternator don't you increase the power consumed to spin it? I would be curious to know which set up was more efficient. In other words the power needed or used to produce the same BTU's |
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| Dave_Darling |
May 19 2016, 01:49 PM
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914 Idiot Group: Members Posts: 15,335 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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QUOTE(OU812 @ May 19 2016, 11:17 AM) In other words the power needed or used to produce the same BTU's Converting energy from one form to another is never 100% efficient. The more conversions you have, the worse the efficiency is. With one setup, you have mechanical energy -> thermal energy. With the other, you have mechanical energy -> electrical energy -> mechanical energy -> thermal energy. The first one needs to be hellaciously inefficient, and the latter three all very efficient, for the second setup to be more efficient than the first. Given the same type of mechanical compressor at the end, the electric-driven one will never be as efficient as the straight mechanical one. --DD |
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Posts in this topic
rgalla9146 Electric AC compressor May 18 2016, 05:19 PM
whitetwinturbo :popcorn: May 18 2016, 06:12 PM bandjoey Electric AV compressors in cars use up to 230v. ... May 18 2016, 06:40 PM
rgalla9146
Electric AV compressors in cars use up to 230v. ... May 18 2016, 07:53 PM OU812
Electric AV compressors in cars use up to 230v. ... May 18 2016, 08:00 PM jd74914
[quote name='bandjoey' post='2346821' date='May 1... May 19 2016, 01:02 PM barrym A few of my lotus friends have used this solution ... May 18 2016, 08:04 PM OU812
A few of my lotus friends have used this solution... May 18 2016, 08:19 PM jeffdon
A few of my lotus friends have used this solutio... May 19 2016, 03:14 PM Elliot Cannon
[quote name='OU812' post='2346885' date='May 18 2... Aug 5 2016, 08:22 PM boxsterfan I think McMark fitted a 130A GM alternator on a ty... May 18 2016, 10:20 PM porschetub 230amp altenator holy...drive that ,turn the cooli... May 19 2016, 06:36 PM Steve I am starting to see this one pop up in various th... Aug 5 2016, 12:28 AM jim_hoyland Steve: what's your alternator put out ? How ma... Aug 5 2016, 05:49 PM Steve
Steve: what's your alternator put out ? How m... Aug 5 2016, 05:57 PM Series9 The answer is: NO.
I don't feel like explain... Aug 5 2016, 08:29 PM Rand It would work about as well as a 12v electric heat... Aug 5 2016, 09:17 PM Chris914n6 In a typical system the compressor is usually on o... Aug 5 2016, 09:55 PM busmech Could always do this, just a bit of more air resis... Aug 5 2016, 10:29 PM Rand Swamp cooler makes more sense than trying to power... Aug 5 2016, 10:33 PM |
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