Evaporative Aircon Question

Submitted: Sunday, Oct 22, 2006 at 21:10
ThreadID: 38730 Views:2960 Replies:6 FollowUps:23
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Anybody experience with evaporative aircon in caravan ?
I am looking to have both evaporative and refrigerative units in my slide-on.
The evaporative can run on house battery for quite some time while the
refrigerative can not. Just interested in feedback about efficency from people
who use it. I have both such systems in the house and use evap 90% of the time.
thanks
gmd
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Reply By: teabags - Sunday, Oct 22, 2006 at 21:39

Sunday, Oct 22, 2006 at 21:39
Evaporative systems are good in areas of low humidity but are worse than useless in areas of high humidity as they just add to the humidity.
AnswerID: 200397

Follow Up By: _gmd_pps - Sunday, Oct 22, 2006 at 21:41

Sunday, Oct 22, 2006 at 21:41
that was not the question. Why don't you simply assume that I know that and why did I mention that I have both systems eventually ..
thanks
gmd
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Follow Up By: teabags - Sunday, Oct 22, 2006 at 22:07

Sunday, Oct 22, 2006 at 22:07
If you use the evaporative 90% of the time you obviously live in a low humidity area. You asked about using this in a slide-on so I assumed that meant that you would be travelling into other areas that may have different climates and wanted infomration about using these units in such different climates.
I also assumed that you wanted considered opinions. If you don't want replies don't ask the question in the first place.
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Follow Up By: GaryInOz (Vic) - Sunday, Oct 22, 2006 at 23:24

Sunday, Oct 22, 2006 at 23:24
Flip side is that the evaporative units can consume a bit of water, and if you are going into an area that is dry enough and hot enough for an evap unit to be effective you may in fact have more approriate things to do with the water in the long term (as a matter of safety and conservation of your resources).
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Follow Up By: Member No 1- Monday, Oct 23, 2006 at 07:58

Monday, Oct 23, 2006 at 07:58
GMD.....so what was the question......"Just interested in feedback about efficency from people who use it"...

teabags answered you correctly...the first time!!! so in case you dont read properly....they are BLOODY useless in high humidty....
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Reply By: Member - John - Sunday, Oct 22, 2006 at 23:16

Sunday, Oct 22, 2006 at 23:16
Just a question, is it feasible/possible/available?
John and Jan

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Follow Up By: GaryInOz (Vic) - Sunday, Oct 22, 2006 at 23:26

Sunday, Oct 22, 2006 at 23:26
As the original post has indicated, yes to all.
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Follow Up By: _gmd_pps - Sunday, Oct 22, 2006 at 23:31

Sunday, Oct 22, 2006 at 23:31
Webasto has a evap unit running on roughly 8amp max.
Just do not know what area is available for evap and how much
cooling capacity in real life ..
thats why I ask ..
Really appreciate if just people answer who actually have a unit and
not others speculating ... and yes I know it uses water and yes I have enough
and and ...
regards
gmd
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Follow Up By: nissnut - Monday, Oct 23, 2006 at 00:47

Monday, Oct 23, 2006 at 00:47
You asked for feedback on the efficency of these units. Teabags gave you a short, precise and correct answer.
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Follow Up By: techo2oz - Monday, Oct 23, 2006 at 06:51

Monday, Oct 23, 2006 at 06:51
With an 8 Amp draw as well, water would not be the only precious resource. That is unless you are running a genset or a relatively large solar array and huge amp hour rated batteries.

My experience with evaporative coolers while camping has been limited to the little portable jobs available through JayCar etc. A personal unit which measures around 6 inches square. Runs off 12 volts and is sufficient to provide a bit of relief on those very warm still nights. However even these can be thirsty on days/nights with very low humidity.

Peter
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Reply By: Jimbo - Monday, Oct 23, 2006 at 07:27

Monday, Oct 23, 2006 at 07:27
With such an obnoxiuos attitude, do really expect any help?
AnswerID: 200430

Follow Up By: Mike Harding - Monday, Oct 23, 2006 at 07:56

Monday, Oct 23, 2006 at 07:56
Also originators of questions need to realise that, once posted, questions no longer “belong” to them. It is quite appropriate for others to make responses which may be oblique to the question because the thread will be read by many people who may not seek exactly the same information as the OP.

Questions and answers on this forum have grown to become an extensive knowledge base available to the whole internet community and much of their value lies in the diverse nature of many answers which, in turn, have spawned sub-questions and produced a broad response to the original post – this is why we are always telling people to “do a search of the archives”. If every question had a simple “one-post” answer the knowledge base would be far less useful.

Mike Harding
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Follow Up By: Member No 1- Monday, Oct 23, 2006 at 08:03

Monday, Oct 23, 2006 at 08:03
maybe his signature should have been "gmd_with_pms"
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Follow Up By: garrycol - Monday, Oct 23, 2006 at 11:18

Monday, Oct 23, 2006 at 11:18
Bitchy
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Follow Up By: Shane (QLD) - Monday, Oct 23, 2006 at 12:40

Monday, Oct 23, 2006 at 12:40
I'm with Jimbo, ( & a former Terracan Owner) with such an attitude I wouldn't even bother to answer the bloke.
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Reply By: Member - Oldplodder (QLD) - Monday, Oct 23, 2006 at 08:18

Monday, Oct 23, 2006 at 08:18
As Mike said communication is not a one way street.
After initiating a question, and a posting of an oblique reply, and the subsequent response from the question originator, helps all of us in understanding the intent of the original question.
_gmd_pps it seems definitely only wants a first hand response from a user of such a system in a caravan, so the rest of us had better keep away. If no answer gets posted so be it. No conjecture allowed.
AnswerID: 200438

Follow Up By: _gmd_pps - Monday, Oct 23, 2006 at 18:22

Monday, Oct 23, 2006 at 18:22
thank you at least one person with brains..
regards
gmd
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Follow Up By: Jimbo - Monday, Oct 23, 2006 at 20:36

Monday, Oct 23, 2006 at 20:36
Hey pms,

You're about as sharp as a crayon.

Oldplodder was mocking you, and you couldn't see it.
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Follow Up By: Mike Harding - Monday, Oct 23, 2006 at 20:46

Monday, Oct 23, 2006 at 20:46
_gmd_pps: you really are your own worst enemy.
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Reply By: Member - Davoe (Nullagine) - Monday, Oct 23, 2006 at 20:30

Monday, Oct 23, 2006 at 20:30
They might be diffeerent now but i would be more concerned about the water efficiency of it than power. We had one in a camper van and it would chew through a 20l jerry can in no time
AnswerID: 200554

Follow Up By: _gmd_pps - Monday, Oct 23, 2006 at 21:15

Monday, Oct 23, 2006 at 21:15
what type ? what brand ?
do you know the surface area of the evaporator ?
thanks
gmd
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FollowupID: 459665

Follow Up By: Member - Davoe (Nullagine) - Tuesday, Oct 24, 2006 at 09:58

Tuesday, Oct 24, 2006 at 09:58
about 20 years ago - i was just a kid but still remember the hassell of filling the jerrys
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Follow Up By: _gmd_pps - Tuesday, Oct 24, 2006 at 11:26

Tuesday, Oct 24, 2006 at 11:26
:)) .. well times have changed ... no jerry cans with the system I am looking at ..
thanks
gmd
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FollowupID: 459769

Follow Up By: Member - Davoe (Nullagine) - Tuesday, Oct 24, 2006 at 11:31

Tuesday, Oct 24, 2006 at 11:31
it will still require water - water use is still a factor to look into if you intend on using it in areas where you need to be self sufficient
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Follow Up By: _gmd_pps - Tuesday, Oct 24, 2006 at 11:37

Tuesday, Oct 24, 2006 at 11:37
It is not a factor for me where I want to use it primarily .. I have large enough tanks and when I really go to places where I need the water I just don't run it and that would be only a few occasions ... My Boat has a deslinator which makes enough water when I am at the beach and I mostly am at the beach ..
thanks
gmd
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FollowupID: 459772

Reply By: Dave198 - Monday, Oct 23, 2006 at 21:28

Monday, Oct 23, 2006 at 21:28
I think some of the trucks now have evaporative a/c in the sleeper cabs.
Might be worth checking out the truck accessories.
Dave
AnswerID: 200581

Follow Up By: _gmd_pps - Monday, Oct 23, 2006 at 21:51

Monday, Oct 23, 2006 at 21:51
Dave,
thanks yes I know actually ... that was one of the reasons I came accross
the Webasto .. down the track when we travel more to the tropics I will include a Dometic (non roof) refrigerative but for now an evaporative looks ok because
the power consumption is close to nothing (yes I call 8 amp max nothing ) over
2KV for a refrig unit ... water is not an issue really .. not for the purpose we need
it for ...

thanks
gmd
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FollowupID: 459675

Follow Up By: Dave(NSW) - Tuesday, Oct 24, 2006 at 10:26

Tuesday, Oct 24, 2006 at 10:26
I have a Viesta unit on my sleeper cab. It can run about 6hrs before filling with water You also need to use a conditioner in water. in high condensation areas just add party ice to water
Dave
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Follow Up By: _gmd_pps - Tuesday, Oct 24, 2006 at 11:30

Tuesday, Oct 24, 2006 at 11:30
Thanks,
the webasto unit I was looking at has a continuous supply when hooked up to a larger tank, and I have several watertanks on board..
regards
gmd
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FollowupID: 459770

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