Solar panels and CPAP machines? - Escape Trailer Owners Community

Go Back   Escape Trailer Owners Community > Escape Tech > Escape Systems | Water, Waste, Charging & Propane
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 05-02-2014, 07:16 PM   #1
Senior Member
 
FMLNM's Avatar
 
Join Date: Mar 2013
Location: Sandia Park, New Mexico
Trailer: 2008 Escape 5.0
Posts: 697
Solar panels and CPAP machines?

I have tried finding the answer by searching the forums but have not had much luck. We have the 90w solar panels plus 2 6v batteries installed by Escape. We find ourselves needing to run 2 CPAP machines (5amp each) and are wondering if we can do that on just battery power....no hookup available. We figure to run the machines about 7 hours a night. So I guess that would be 35amp hours per machine (7 hours times 5 amps).
We are in NM and will be camping in Utah and the weather is expected to be good so sunshine is not going to be an issue.

Can anyone help me figure out if that is feasible? If necessary we could run just 1 machine.

Thanks!

PS - We have the 1500w inverter.
__________________

__________________
Fran & Dave
2008 Escape 5.0
2011 Frontier Crew Cab Short Bed Pro4x
Sandia Park, New Mexico
FMLNM is offline   Reply With Quote
Old 05-02-2014, 07:35 PM   #2
Senior Member
 
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,874
What is a CPAP machine?
__________________

J Mac is offline   Reply With Quote
Old 05-02-2014, 07:42 PM   #3
Senior Member
 
Sandra L's Avatar
 
Join Date: Oct 2008
Location: Antelope, California
Trailer: 2009 17B "Suite Escape" pulled by a 2005 Toyota Sienna
Posts: 1,513
Continuous Positive Airway Pressure is what CPAP stands for. It is used to help those with sleep apnea.
__________________
Peace and Sunshine
Sandra L is offline   Reply With Quote
Old 05-02-2014, 08:13 PM   #4
Senior Member
 
Join Date: Feb 2010
Location: ?, Arizona
Trailer: ?
Posts: 736
You have 232 amp hours if the batteries are fully charged. And they should not be run below 50%.

Assuming your 5 amp figure is for a 12V DC plug then you will use 2*5*7 = 70 amp hours. IF your 5 amp figure is for 120V there is no way you can run them.

If you have a 90 Watt panel you get at most 7+ amps, and much less when it is shaded or the sun is low, or it is cloudy, etc. Say you average 5 amps for 10 hours a day (which is probably optimistic).

Assuming no other power use (water pump, fridge control, smoke/LP detector, lights - an unrealistic assumption) you will be losing 20 amp hours per day and so you will need some additional power source. Another solar panel, a generator, ... And if you crank up the inverter you will really run down the batteries.

Day 1 end batteries = 232
Day 2 start batteries = 232-70=162
Day 2 end batteries = 162+50=212
Day 3 start batteries = 212-70=132
Day 3 end batteries = 132+50=182
Day 4 start batteries = 182-70=112 *** below 50%, not good
jamman is offline   Reply With Quote
Old 05-02-2014, 08:18 PM   #5
Senior Member
 
Join Date: Feb 2010
Location: ?, Arizona
Trailer: ?
Posts: 736
If you can get by with only 1 machine you are in MUCH better shape (power wise - don't know about health.) You can probably sustain that with 1 solar panel and some careful use of power. LED lights, water pump OK, NO inverter use, etc.
jamman is offline   Reply With Quote
Old 05-02-2014, 08:34 PM   #6
Site Team
 
Donna D.'s Avatar
 
Join Date: Nov 2008
Location: Portland, Oregon
Trailer: 2014 Escape 5.0 TA
Posts: 6,831
AND, like all technology... older CPAP machines require more power than the "newer" models. Be safe. But still, think how long you have owned the machine and it MAY be time to check out a newer model...
Donna D. is offline   Reply With Quote
Old 05-02-2014, 09:18 PM   #7
Senior Member
 
Join Date: Jun 2012
Location: Brentwood Bay, British Columbia
Trailer: 2012 15-A
Posts: 113
In relation to one CPAP machine only, you will be fine as the CPAP machine by itself, does not draw much power. I can't speak on two machines. But I recommend you do not use the humidifier attachment as that increase the draw significantly and you will drain the batteries down below true acceptable level overnight. The only time I use the humidifier is when we are hooked into shore power.

Regards

Scott
Kærnehuset is offline   Reply With Quote
Old 05-02-2014, 11:55 PM   #8
Senior Member
 
Join Date: Aug 2012
Location: Escondido, California
Trailer: 2012 Escape 19'
Posts: 875
You may be able to plug directly into a 12 volt supply from the trailer. Draw power directly from the batteries at night which is most efficiant then let the solar re-charge the batteries during the day.

Read this:
http://www.resmed.com/assets/documen...de_glo_eng.pdf
__________________
480 Amps 12VDC Battery Capacity,
350 Watts Adjustable Solar Panels,
2500 Watt Inverter;
"Want Some Ice Cubes?, "Want a Frozen Margarita?", Want a Jump?"
hotfishtacos is offline   Reply With Quote
Old 05-03-2014, 12:52 AM   #9
Senior Member
 
Devil Dog's Avatar
 
Join Date: Feb 2012
Location: Steveston B.C., British Columbia
Trailer: 2012- 17'B.... 2016 Tacoma SR5 TRD
Posts: 455
You may cosider a wind turbine they run day and night. They can be a little noisy at hi speeds. But very effective.
__________________
I've almost been everywhere man.
Almost been everywhere.....
Devil Dog is offline   Reply With Quote
Old 05-03-2014, 01:05 AM   #10
Senior Member
 
Join Date: Jun 2012
Location: Brentwood Bay, British Columbia
Trailer: 2012 15-A
Posts: 113
Yes, I forgot to add that you do need to get the proper 12 volt inverter for your specific CPAP machine that will plug into the 12 volt system in the trailer. It has a cigarette lighter style plug on it which can plug directly into the socket in your trailer.

Scott
__________________

Kærnehuset 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






» Virginia Campgrounds

Reviews provided by



All times are GMT -5. The time now is 03:49 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.