12v Air Conditioner for wilderness camping - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-23-2015, 12:34 PM   #1
Senior Member
 
Borden's Avatar
 
Name: Borden and Carole
Trailer: Boler 1978 17' 4" Earlton Ont Model
Ontario
Posts: 1,003
Registry
Smile 12v Air Conditioner for wilderness camping

Our roof will not support a traditional air unit, they do make an RV side wall unit made to take the shaking of a trailer ride. Problem is you need 120v and lot of it.

Thinking of getting a HD locking boat cooler mount a little rad (heater core) on top of wall inside seat area with low amp 12v fan on one side to blow into trailer, add intake air piping to back of fan, plus a 12v pump at floor below. Connect pump through lid into cooler full of water and ice block in cooler, piping up out through pump to rad out back into cooler to cool trailer. With grills and have tubing to cooler and pump use quick connects it would be easier to fill cooler. Pump could be on floor of trailer like the water pump under sink.

Extra battery to run this would work at a wilderness site. Block ice, cubes or crushed would work in cooler. Also could have a bypass water hookups for connecting to a cold stream with an input water filter. Quick connects would help in this optional stream hookup.

12v AC sounds good, any ideas for possible improvements?
project will be a go just want to get ideas to refine and avoid possible problems in advance.
__________________

__________________
1978 Ontario made Boler
Borden is offline   Reply With Quote
Old 02-23-2015, 12:50 PM   #2
Senior Member
 
Borden's Avatar
 
Name: Borden and Carole
Trailer: Boler 1978 17' 4" Earlton Ont Model
Ontario
Posts: 1,003
Registry
Spring fed stream would probably work best they can be quite cold, ice just to take the edge of the heat and may not last long. Time will tell. Problem is power requirements of traditional AC. Propane unit would be great but any found are only for transport trucks very large and very heavy.
__________________

__________________
1978 Ontario made Boler
Borden is offline   Reply With Quote
Old 02-23-2015, 01:23 PM   #3
Senior Member
 
Name: Steve
Trailer: Casita 17 ft DLX SD
NW Wisconsin
Posts: 3,080
It takes approx 140 btu' s to melt one lb of ice , If you need 5000 btu' s to cool your trailer to an acceptable level , you would consume approx 36 Lbs of ice / hour ( Assuming 100% heat transfer) . Not very practical in my book . If you could park by a cool stream and use a single pass system with a large enough heat exchanger you may get sufficient cooling . I worked on an older bldg that used well water to cool the space at a rate of 60,000 gallons / hour . They used a single pass system and just dumped the waste water down the sewer . That type of system is not allowed any more in most jurisdictions.
steve dunham is offline   Reply With Quote
Old 02-24-2015, 12:53 AM   #4
Senior Member
 
cpaharley2008's Avatar
 
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,407
Registry
Here you go Evaporative | 12volt Air Conditioning | Swamp | 12v AC Coolers
I have used one and they work great, in fact I'll sell you mine.
__________________
Jim
Never in doubt, often wrong
cpaharley2008 is offline   Reply With Quote
Old 02-24-2015, 09:18 AM   #5
Member
 
Rob V's Avatar
 
Name: Rob
Trailer: New 1973 Compact II
California
Posts: 30
Evaporation is an efficient way to cool a surface. So drink water, perspire, and sit in front of a fan.

Cools you, not the air around you.
Rob V is offline   Reply With Quote
Old 02-24-2015, 10:29 AM   #6
Senior Member
 
Borden's Avatar
 
Name: Borden and Carole
Trailer: Boler 1978 17' 4" Earlton Ont Model
Ontario
Posts: 1,003
Registry
Part of the fun will be in design and building it, single pass from stream back to stream sounds like best case scenario. With maybe two heater cores and a low voltage fan maybe stack the rads to use one fan or side by side with ducting to aim fanned air through both. Will start with one rad as it is easy to add a second just a little tin work for the change will not need a lot of air movement. Just want to take the edge off not like a house air system. Up high may work best as cold air falls maybe over closet would work better than under sweat? Will have to do some more planning. Thanks for the link will check it out.
__________________
1978 Ontario made Boler
Borden is offline   Reply With Quote
Old 02-24-2015, 10:57 AM   #7
Senior Member
 
Name: Steve
Trailer: Casita 17 ft DLX SD
NW Wisconsin
Posts: 3,080
I would also check on the legality of diverting water from a stream and then reintroducing the same heated water back into the stream . People in our area were placing coils in lakes to capture the latent heat to use with their heat pumps. This caused ice levels to change ,and fish and fish habitat was damaged . The state eventually forced them to remove the coils due to environmental problems .What you are considering will work but I am just pointing out something to ponder.
steve dunham is offline   Reply With Quote
Old 02-25-2015, 07:56 PM   #8
Senior Member
 
MCDenny's Avatar
 
Name: Denny
Trailer: Lil Snoozy
Michigan
Posts: 551
Quote:
Originally Posted by steve dunham View Post
It takes approx 140 btu' s to melt one lb of ice , If you need 5000 btu' s to cool your trailer to an acceptable level , you would consume approx 36 Lbs of ice / hour ( Assuming 100% heat transfer) . Not very practical in my book . If you could park by a cool stream and use a single pass system with a large enough heat exchanger you may get sufficient cooling . I worked on an older bldg that used well water to cool the space at a rate of 60,000 gallons / hour . They used a single pass system and just dumped the waste water down the sewer . That type of system is not allowed any more in most jurisdictions.

As always, ya just gotta do the math.


Denny Wolfe
Wanderingourway.wordpress.com
__________________

MCDenny is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
First automobile air conditioner. Rick kl Jokes, Stories & Tall Tales 1 05-29-2009 09:36 PM
Air Conditioner on a Generator Parker Buckley Problem Solving | Owners Helping Owners 13 05-06-2009 05:15 PM
removing air conditioner, installing skylight scamp Chuck n Julie Problem Solving | Owners Helping Owners 10 03-27-2009 10:34 AM
AIR CONDITIONER georgia g Problem Solving | Owners Helping Owners 19 01-01-2009 06:09 PM
air conditioner question Jason R Problem Solving | Owners Helping Owners 2 07-20-2008 11:19 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:50 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.