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Multiple Condensers - Is it Feasable?

vtwinwilly on Mon April 21, 2008 11:07 PM User is offline

Year: 1993
Make: Holiday Rambler
Model: Navigator
Engine Size: C8.3
Refrigerant Type: 134a

I'm in the process of designing a retrofit for my motorhome. When switching from r12 to 134a, I'm told that I also need to increase my condenser capacity. Can I do this by adding an additional condenser. In other words, can condensersers be connected in series (or in parallel)?

thx

Bill B.



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93 - Holiday Rambler Navigator
Project - Fix the Dash Air

bohica2xo on Mon April 21, 2008 11:50 PM User is offline

Bill:

This has been discussed here at length a couple of times. Parallel vs series, etc. A search should turn some of it up...

You have a large condensor right now from your description. You may have enough capacity already, depending on your evaporator capacity. If it is a tube & fin, it is a good candidate for a cleaning.

Time for some more pics, let's see what you have to work with.

B.

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

vtwinwilly on Tue April 22, 2008 12:01 AM User is offline

B.

I'll have to try and get some pics tomorrow. I did do a search and turned up nothing. I tried every combination I could think of "multiple condensers", "dual condensers", etc. maybe I fat fingered something. Wouldn't be the first time.

thx

Bill B.

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93 - Holiday Rambler Navigator
Project - Fix the Dash Air

bohica2xo on Tue April 22, 2008 12:40 AM User is offline

Bill:

Search here can be tedious, but sometimes I get lucky:

Two Condensors

Second Condensor

I know there is more, but this is a start. I lean toward the series setup, since it is the only thing practiced commercially. Some dodge minivans added an aftercooler on the condensor discharge for rear a/c.

B.

-------------------------
"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

vtwinwilly on Tue April 22, 2008 12:41 AM User is offline

B.

I worked on my search skills and found the answer to my question.

This gave me an idea. I will be switching to 134a. Yes I have a large condenser (36 x 18.25), but it's not necessarily in the best location. All air has to be forced across the condenser using 2 16" fans.

My thought... go ahead and do the conversion with the condenser I have. If I still need additional cooling of the condensed 134a, I could add a modern "parallel flow condenser" (in series) mounted up in the front of the motohome where I can take advantage of ram air flow.

Again, just me thinking out loud.

BTW... I will be switching to a TM-21 HX compressor as recommended.

Bill B.

-------------------------
93 - Holiday Rambler Navigator
Project - Fix the Dash Air

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