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> Question on AC condensors, can they be run in series?
boxsterfan
post Aug 4 2015, 09:25 PM
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Suppose a crazy person was thinking of A/C in their 914. Could such a crazy person run condensors in series behind the fog light grills?

Basically, the refrigerant (R134) would come from the compressor all the way up to the right front under the headlight, go through a condensor, come out of that condensor across the front of trunk, into a second condensor under the left head light area, and then back out to a receiver/dryer and through the rest of the system.

Obviously, there are some cuts you need to make in the front area behind the fog light grills, the condensors have to be small enough to fit under the headlights when close and for good enough air flow you have to have cut holes in the front wheel well behind the condensors.

I know someone on this board mounted some oil coolers in these locations (can't find the thread).

914 A/C reference from http://www.914world.com/bbs2/index.php?sho...=192917&hl= (thanks dlee6204).
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jcd914
post Aug 7 2015, 10:02 AM
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I don't think the loss in efficiency due to the drop in the Freon temperature as it reaches the second condenser would be an issue.

Many AC condensers are a single or a pair of tubes that snake back and forth across the condenser. If you compared a large condenser like this with say 10 feet of tubing to 2 smaller ones with say 5 feet of tubing each, you will get the same type of drop in efficiency with the large one as the Freon travels thru the same length of cooling tube.

If everything else about the condensers are the same (air flow, tube construction, fins , etc...), at any point along the way in the large condenser the Freon should have lost the same amount of heat as it would at the same distance thru the 2 condensers.

Just thinking out loud ... well in my head buy typing it.

Jim
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914_teener
post Aug 7 2015, 04:52 PM
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QUOTE(jcd914 @ Aug 7 2015, 09:02 AM) *

I don't think the loss in efficiency due to the drop in the Freon temperature as it reaches the second condenser would be an issue.

Many AC condensers are a single or a pair of tubes that snake back and forth across the condenser. If you compared a large condenser like this with say 10 feet of tubing to 2 smaller ones with say 5 feet of tubing each, you will get the same type of drop in efficiency with the large one as the Freon travels thru the same length of cooling tube.

If everything else about the condensers are the same (air flow, tube construction, fins , etc...), at any point along the way in the large condenser the Freon should have lost the same amount of heat as it would at the same distance thru the 2 condensers.

Just thinking out loud ... well in my head buy typing it.

Jim



I thought the question was whether or not the size area was sufficient to get the Freon back to a liquid.

If the question is if they can be run in a series like that then yes.

Whether it will work or not I guess is another question.





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Posts in this topic
boxsterfan   Question on AC condensors   Aug 4 2015, 09:25 PM
Mike Bellis   If you could make it work, put two in parallel. Th...   Aug 4 2015, 09:47 PM
boxsterfan   I was thinking I would run parallel flow condensor...   Aug 4 2015, 09:57 PM
ThePaintedMan   But how would you ever be able to put fans on them...   Aug 5 2015, 07:03 AM
76-914   Why? Saving trunk space? Are you H20 or air cooled...   Aug 5 2015, 07:41 AM
boxsterfan   Why? Saving trunk space? Are you H20 or air coole...   Aug 5 2015, 12:23 PM
stugray   I know someone on this board mounted some oil co...   Aug 5 2015, 08:02 AM
Dave_Darling   You can run condensors in series. The 911s did th...   Aug 5 2015, 09:20 AM
boxsterfan   You can run condensors in series. The 911s did t...   Aug 5 2015, 12:25 PM
Mike Bellis   Running them in parallel would seem, to me, to ra...   Aug 5 2015, 06:23 PM
76-914   Running them in parallel would seem, to me, to r...   Aug 5 2015, 06:55 PM
Dave_Darling   There were differences, though. Both condensers o...   Aug 5 2015, 03:12 PM
Spoke   Griffiths.com does this for the 911. It's call...   Aug 5 2015, 04:40 PM
Chris914n6   The question is can you find a pair of 11x13 conde...   Aug 5 2015, 07:56 PM
boxsterfan   The question is can you find a pair of 11x13 cond...   Aug 6 2015, 01:32 PM
914_teener   The question is can you find a pair of 11x13 con...   Aug 6 2015, 05:23 PM
stugray   I chose to put my oil coolers in series because I ...   Aug 6 2015, 05:48 PM
914_teener   [quote name='stugray' date='Aug 6 2015...   Aug 6 2015, 07:24 PM
boxsterfan   I chose to put my oil coolers in series because I...   Aug 7 2015, 02:43 PM
stugray   Stugray, how did the oil coolers end up working f...   Aug 7 2015, 04:46 PM
914_teener   .....I quess my statement needs context. There is...   Aug 6 2015, 09:28 PM
Dave_Darling   What do you mean "re-heat on the coils"?...   Aug 7 2015, 09:39 AM
914_teener   What do you mean "re-heat on the coils...   Aug 7 2015, 04:39 PM
Chris914n6   Has to do with the psych curve Dave: https://en....   Aug 7 2015, 06:45 PM
maf914   What do you mean "re-heat on the coils...   Aug 12 2015, 07:04 AM
914_teener   [quote name='914_teener' post='2220293' date='Aug...   Aug 12 2015, 09:27 AM
jcd914   I don't think the loss in efficiency due to th...   Aug 7 2015, 10:02 AM
914_teener   I don't think the loss in efficiency due to t...   Aug 7 2015, 04:52 PM
boxsterfan   I thought the question was whether or not the si...   Aug 7 2015, 08:55 PM
stugray   Stugray, did you put fans on your oil coolers up...   Aug 7 2015, 11:47 PM
boxsterfan   I was reading about compressor mounting in another...   Aug 8 2015, 12:18 PM
GeorgeRud   The electric compressors require quite a high ampe...   Aug 10 2015, 09:32 PM
stugray   Yes: http://www.jegs.com/p/JEGS-Performance-Pro.....   Aug 10 2015, 10:05 PM
boxsterfan   Wow pricey!! http://www.jegs.com/i/JEGS-P...   Aug 10 2015, 10:38 PM
Chris914n6   Nissan Leaf $250ish I don't have the for...   Aug 11 2015, 12:28 AM
boxsterfan   Nissan Leaf $250ish I don't have the fo...   Aug 11 2015, 01:36 PM
jcd914   The Leaf 's electric AC compressor does NOT op...   Aug 11 2015, 06:12 PM
boxsterfan   The Leaf 's electric AC compressor does NOT o...   Aug 11 2015, 10:38 PM
jcd914   The Leaf 's electric AC compressor does NOT ...   Aug 11 2015, 11:36 PM
maf914   Wow! The Nissan Leaf unit is actually a heat ...   Aug 12 2015, 06:33 AM


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