I am pulling up roots and heading west and have some questions about how to power my c-pap machine all/every night and recharge all day. How do I determine wattage needed and what type of equipment do I need. It can operate in DC mode if that will help. thanks
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hi and welcome
Someone here has that exact same problem and will be along to help.NABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL] -
here's a thread about CPAP
If you are a homeowner who is about to put a solar panel system on your home or you are a newbie to the solar market, get started here! A non-technical forum to help you understand the in's and out's of solar.
What I do for 1 overnight, is I have a automotive battery jumper pack, that has a 12V outlet, and 2x the watt hour capacity I need for 1 night.
I have a couple posts in that thread that cover what I did
MikePowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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overnight
I am also considering running a fan with the c-pap machine. How do I calculate the wattage of solar panels. If that is an equipment list I'd appreciate it written in a more understandable format as I rode the little bus.
thank you, PaulComment
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Write down the Watt Hours Divide by 7 = WH needed for 1 day.
Give us that daily number, and then we can calculate the battery and inverter needed.
Unless storms take out your power on sunny days, PV won't help a lot, a regular battery charger is better.Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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PV
Explain PV. Also, where would I get a killawatt meter and are they expensive? Also isn't DC power created by solar panels? Why would I need an inverter - my c-pap is AC or DC with a different cord and I believe I can purchase a DC powered fan?
thanksComment
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another question please
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Kill-a-watt meter
You will have to research for yourself, if you obtain better efficiency, or better performance, with a DC or AC fan. YOU need to measure the draw both ways, and decide what You want.Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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