Reply
 
Thread Tools Display Modes
 
Old 06-08-2011, 09:23 AM   #1
Senior Member
 
Join Date: Mar 2009
Posts: 351
Solar direct air conditioner

Jage's purchase of the Kyocera 185 watt panel got me thinking about options for solar air conditioning.

It gets a little warm in these parts. It would be nice to be able to escape the heat from about 11 an to 4 pm.

Even a small portable ac requires too many panels.

I wonder if a small freezer like the SunDanzer could double as a van ac? Put refletix in all the windows, crank it to full power and blow a small fan into the open door.

I guess the way to see if this setup has any chance of lowering the temp is to set up a cheap 120v refridge or freezer and see how much it lowers the temp on a 100 F sunny day.
Just thinking out loud.

Tom
__________________

__________________
Tom
Austin, Texas
1995 SMB E250
bluedog225 is offline   Reply With Quote
Old 06-08-2011, 10:04 AM   #2
Senior Member
 
rockbender's Avatar
 
Join Date: Sep 2010
Location: Bend, OR
Posts: 799
Re: Solar direct air conditioner

You'd have to do a good job of isolating the compressor system to the outside so that the hot air off of that isn't heating your van. I can feel my fridge put off a fair amount of heat when its working.
__________________

__________________
Josh
2009 Express AWD, CCV Top & 50-ish home build. Daily driver/camper/kid hauler
rockbender is offline   Reply With Quote
Old 06-08-2011, 04:17 PM   #3
Senior Member
 
Tapatio's Avatar
 
Join Date: Nov 2010
Location: California
Posts: 999
Garage
Re: Solar direct air conditioner

How about an evaporative cooler like this one? Solar panel would easily power it, 4.6amps on high. One of the comments said it consumes 5 gallons of water per day.

http://www.amazon.com/Turbo-Cool-RV-...7570643&sr=8-1

__________________
2006 E350 6.0PSD 5R110, SMB 4X4, RB-50, ARB lockers front/rear, Aluminess galore, AMP steps.
Callsign KK6GIY
Tapatio is offline   Reply With Quote
Old 06-08-2011, 11:38 PM   #4
Site Team
 
daveb's Avatar
 
Join Date: May 2007
Location: Turlock Ca
Posts: 9,806
Garage
Re: Solar direct air conditioner

Quote:
Originally Posted by bluedog225
I wonder if a small freezer like the SunDanzer could double as a van ac? Put refletix in all the windows, crank it to full power and blow a small fan into the open door.


Tom
I'm not sure but I doubt it Tom. Besides the BTU factor, running the refrigerator at 100% might take a toll on it. I'm more incline to look into the tech junk out there that cools vehicle seats and incorporate that into the bed. A nice cool slab to lay on. Coupled with a fan, I figure most would feel somewhat comfortable.

Myself, I'm waithing for the day to find a power source small and compact enough to run a real air conditionar...

Dave
__________________
2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer

Sportsmobile 4X4 Adventures..........On and off road adventures
daveb is offline   Reply With Quote
Old 06-09-2011, 07:20 AM   #5
Senior Member
 
LenS's Avatar
 
Join Date: Jan 2009
Posts: 1,176
Re: Solar direct air conditioner

How much cooler do you want it?

I figure the swamp cooler shown above that consumes 5 gallons of water per day would lower then temperature in a low humidity area by about 11F.

If it is 100F outside and a sunny Texas day the van inside temp could get up to 120F very easily. My experience is that one of the small A/C 5200 btu units will drop the temp in my van about 30F. So even one of those would only get you down to about 90F. Even an Energy Star 5200 btu unit will consume about 400-450 watts. I would guess that a small refrig or freezer that consumes say 100 watts would only put out 1000 btu's and that would translate into lowering the van temperature by 6F. Not much. Think you need a 10,000 btu a/c unit and a very long extension cord for Texas summers.
__________________
Len & Joanne

The Green TARDIS
LenS is offline   Reply With Quote
Old 06-11-2011, 10:40 AM   #6
Senior Member
 
Join Date: Mar 2009
Posts: 351
Re: Solar direct air conditioner

Thanks for the suggestions. I don't think evap coolers work well around here because the humidity is usually pretty high.

The numbers help clear up my fuzzy thinking. I have always thought that a 9000 btu ac would freeze out a smb on a hot sunny day. I guess I need to check that out. It still would be nice to have a variable input dc cooling system to hook up to whatever solar or wind power that was available.

I appreciate the input.

Tom
__________________
Tom
Austin, Texas
1995 SMB E250
bluedog225 is offline   Reply With Quote
Old 06-11-2011, 05:18 PM   #7
Member
 
Join Date: Jul 2010
Posts: 40
Re: Solar direct air conditioner

Since we're thinking out loud, I was thinking the other day about a 12 volt motor that attaches to the factory ac compressor. No idea how much power it would require to run or the rpm's needed. Too much coffee and the south Texas heat combined with a little ADD don't let me run the details to ground, but could be possible if power Needs aren't too high. Flash. How about wind power? Either dc wind generator or shaft/ gear drive. I usually want to camp and windsurf at the same time so have that other source of energy. How's that for fuzzy thinking?
Bigduke6 is offline   Reply With Quote
Old 06-11-2011, 08:22 PM   #8
Site Team
 
daveb's Avatar
 
Join Date: May 2007
Location: Turlock Ca
Posts: 9,806
Garage
Re: Solar direct air conditioner

I do not know how well the Danhard AC system SMB installs works without the engine running. I've been told it's not bad, but nobody (as far as I know) has offered up any numbers showing what it does on shore power. I'd like to hear from them.


My starcool will freeze me out with the factory and the DC portion of the Starcool operating while in motion, but my starcool is basically worthless on shore power alone and just can't keep up with the sun baking down on the vehicle. Parking in shade makes a big difference but I'm still lucky to get 15 degrees lower than outside temps. I've yet to see something that doesn't pull huge amounts of energy and agree with Lens.

For what its worth, Danhard (who made Starcool) has a huge selection of add on air conditioners and I might look at seeing if it possible to do a switch.
http://www.danhard.com/evap2.htm
http://www.danhard.com/revised%20catalo ... atalog.pdf
It's a huge cost though.
__________________
2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer

Sportsmobile 4X4 Adventures..........On and off road adventures
daveb is offline   Reply With Quote
Old 06-12-2011, 05:27 PM   #9
Senior Member
 
Join Date: Nov 2010
Posts: 533
Re: Solar direct air conditioner

Look up Marine AC. There are units that are designed to be run independently. I don't think you can generate enough power with a full rooftop of PV's or a wind gen but you can do it with a small generator. A brief look at some of the sites will give you the power requirements.
witoke is offline   Reply With Quote
Old 06-14-2011, 05:53 PM   #10
Senior Member
 
Join Date: Oct 2007
Posts: 161
Re: Solar direct air conditioner

swampy.net has a/c that work with ice
__________________

__________________
gerry
gerrym51 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 07:30 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.