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07-19-2015, 12:29 PM
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#1
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Senior Member
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,868
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Fridge question.
Apart from the led lights that glow when my 3.5 cubic foot fridge is on propane power, is there any other battery 'draw' to the fridge? In other words, do I need any battery power to my fridge once the propane is lit and working?
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07-19-2015, 01:27 PM
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#2
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Senior Member
Join Date: Nov 2008
Location: Southern Alberta, Alberta
Trailer: 2015 Escape 5.0TA
Posts: 1,734
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Quote:
Originally Posted by J Mac
Apart from the led lights that glow when my 3.5 cubic foot fridge is on propane power, is there any other battery 'draw' to the fridge? In other words, do I need any battery power to my fridge once the propane is lit and working?
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Yes.
Cheers
Doug
__________________
Cheers
Doug
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07-19-2015, 02:09 PM
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#3
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Senior Member
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,868
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Quote:
Originally Posted by PGDriver
Yes.
Cheers
Doug
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What is the battery powering when the fridge is on propane power?
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07-19-2015, 02:27 PM
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#4
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Senior Member
Join Date: Oct 2013
Location: Parksville, British Columbia
Trailer: 2014 Escape 17B
Posts: 148
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Quote:
Originally Posted by J Mac
What is the battery powering when the fridge is on propane power?
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Its also powering the electronic control board and the valve solenoid which allows gas flow.
__________________
David
2016 VW Touareg TDI
2014 Escape 17B "Glass Cabin"
2019 KC the Beagle
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07-19-2015, 02:38 PM
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#5
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Senior Member
Join Date: Mar 2014
Location: Mesa, Arizona
Trailer: '15 Escape 5.0 TA
Posts: 188
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The 2 door fridge in out 5.0 also has a fan. It doesn't run all the time, however. It is automatic and seems to kick on when the weather is hot and the fridge is struggling to maintain temp. I assume it is DC powered and will run when off grid.
__________________
2013 GMC Sierra CC Max Tow
2011 Casita 17 SD-sold
2015 Escape 5.0TA-sold
"How can I be lost, if I have no place to go"
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07-19-2015, 03:38 PM
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#6
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Senior Member
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,868
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Quote:
Originally Posted by t-twnbob
The 2 door fridge in out 5.0 also has a fan. It doesn't run all the time, however. It is automatic and seems to kick on when the weather is hot and the fridge is struggling to maintain temp. I assume it is DC powered and will run when off grid.
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Thanks. I was only curious about the 3.5 cubic foot fridge.
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07-19-2015, 05:40 PM
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#7
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Senior Member
Join Date: Apr 2014
Location: Arvada, Colorado
Trailer: 2015 E'21 - 'Velocity'. Tow: Toyota Tacoma V6, 4X4, manual.
Posts: 1,692
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Quote:
Originally Posted by J Mac
What is the battery powering when the fridge is on propane power?
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I know you didn't ask about the 6 cu ft model, but I'm willing to bet they are in the same ballpark with respect to the controller and solenoid.
Ours draws 225 ma (about 1/4 amp) when on propane - extra fan not running.
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Alan
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07-19-2015, 05:47 PM
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#8
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Senior Member
Join Date: Sep 2010
Location: Kelowna, British Columbia
Trailer: 2008 Escape 17b
Posts: 1,868
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thanks alanmalk. The reason I inquired in the first place was because I have see propane fridges on fishing boats that are said to run entirely on propane with no electric current. BTW they are match lit.
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07-19-2015, 07:37 PM
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#9
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Senior Member
Join Date: Nov 2008
Location: Shawnigan Lake, British Columbia
Trailer: 2013 19ft Escape "Eggy Sue"
Posts: 188
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Hope this topic is ok on this thread. My question is can I drive all day in the sunshine using solar power( 95watts) with my fridge on or will it drastically reduce my batteries. Assuming there is nothing in the fridge that starts with P.Thanks in advance. Peter
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07-19-2015, 08:45 PM
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#10
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Senior Member
Join Date: Jun 2010
Location: Central, Pennsylvania
Trailer: Escape#5 2022 E19
Posts: 26,268
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Pete, depends on your tow vehicle electrical output, simple math problem, add up your input with the solar and your tug minus the refer draw= amount of battery usage and compare to your battery storage.
__________________
Jim
Sometime life gets in the way of living.......
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07-19-2015, 10:03 PM
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#11
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Senior Member
Join Date: Apr 2014
Location: Arvada, Colorado
Trailer: 2015 E'21 - 'Velocity'. Tow: Toyota Tacoma V6, 4X4, manual.
Posts: 1,692
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Quote:
Originally Posted by peter
Hope this topic is ok on this thread. My question is can I drive all day in the sunshine using solar power( 95watts) with my fridge on or will it drastically reduce my batteries. Assuming there is nothing in the fridge that starts with P.Thanks in advance. Peter
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That is actually a difficult question to answer. Some variables are: the size of your fridge, the air temperature, the efficiency of the circuit all the way from the alternator to the fridge, the capacity of your batteries, etc. Lots of hard to measure variables.
Starting at the fridge, using 12v option (as opposed to the propane option) will require somewhere around 200 to 300 watts. I don't have my manual handy but regardless, the fridge takes more than solar can provide. In theory, a running vehicle can make up the shortfall. But from reading reports on this forum, a number of folks say they end up with flat batteries after towing all day. So, what could be going wrong?
One problem, it is the long distance from the source to the drain (alternator to fridge). Skinny wire can cause a significant voltage drop. A bit of tarnish on the trailer connection can cause voltage drop (which is exacerbated at higher amperage). The trailer voltage regulator may be confused by the alternator voltage regulator. And the list goes on...
I plan to try the following some day. With a blanket over the solar panel and the fridge running on 12v with the door open (so you know beyond a shadow of doubt that the boiler is heating), measure the voltage at the dedicated fuse that goes to the fridge. Then, hook up the tow and and trailer plug and have a volunteer run the engine at 2000 rpm (for a solid output from the alternator). Measure the voltage again. If all is well, the voltage should go up around 1 volt - say from 12 to 13, or better. If you are not seeing a solid gain from the alternator, then you know that you will arrive at your campsite in the evening with drained batteries.
If you try this, please report back.
(And never, ever, put that "P" word in your fridge).
--
Alan
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07-19-2015, 10:41 PM
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#12
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Senior Member
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 14,935
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Quote:
Originally Posted by J Mac
... I have see propane fridges on fishing boats that are said to run entirely on propane with no electric current. BTW they are match lit.
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Older RV refrigerators have no electronic controls and can operate on propane without electricity (and on 120V AC without 12V DC power). Many are piezo-ignited, so they don't need a match. To work, they need to use a similar valve to that in a pilot-equipped furnace or water heater: as long as the flame is going a thermocouple provides enough power to keep the valve open, and a manual button holds it open during lighting. To control the amount of cooling, a mechanical thermostat switches the gas valve between low and high burn rates, so the low rate acts like a pilot flame.
I don't know if this style is still available.
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07-19-2015, 11:16 PM
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#13
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Senior Member
Join Date: Feb 2013
Location: Santa Rosa County, Florida
Trailer: 2014 Escape 21 Tow: 2024 Toyota Tundra
Posts: 3,105
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Quote:
Originally Posted by peter
Hope this topic is ok on this thread. My question is can I drive all day in the sunshine using solar power( 95watts) with my fridge on or will it drastically reduce my batteries. Assuming there is nothing in the fridge that starts with P.Thanks in advance. Peter
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From my experience you will still drain your batteries somewhat. In an Escape 21 with two solar panels totaling 195W, my two six-volt batteries would lose up to 10% of their charge after a five-hour drive with the fridge set to 12V. Maybe more; I don't remember. The truck's alternator didn't seem to contribute much, presumably due to the length of wiring between the alternator and the trailer's batteries. I finally gave up and started putting the fridge on propane when traveling.
__________________
Mike Lewis
She don't lie, she don't lie, she don't lie-- propane
Photos and travelogues here: mikelewisimages.com
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07-19-2015, 11:51 PM
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#14
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Commercial Member
Join Date: Apr 2014
Location: Hillsboro, Oregon
Trailer: 2014 Escape 21 - "Felicity"
Posts: 2,945
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Quote:
Originally Posted by peter
Hope this topic is ok on this thread. My question is can I drive all day in the sunshine using solar power( 95watts) with my fridge on or will it drastically reduce my batteries. Assuming there is nothing in the fridge that starts with P.Thanks in advance. Peter
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95 watts divided by 12 volts is about 8 amps. I don't know of any solar panel that will fit on a trailer that will deliver a constant 8 amps minimum.
__________________
Charlie Y
Need custom storage to your design? Don't drill holes!
www.RVWidgetWorks.com
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07-20-2015, 12:29 AM
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#15
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Senior Member
Join Date: Nov 2008
Location: Shawnigan Lake, British Columbia
Trailer: 2013 19ft Escape "Eggy Sue"
Posts: 188
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Thank you everyone for the info. Appreciated muchly. Peter
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07-20-2015, 02:05 AM
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#16
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Senior Member
Join Date: Apr 2014
Location: Olympia wa, Washington
Trailer: 5.0TA 2017
Posts: 2,255
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My fridge started working on pro pain on the way home from my trip I was plugged in to elect the whole time and it didn't work but suddenly started on my way home .
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07-20-2015, 05:00 AM
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#17
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Site Team
Join Date: Jun 2014
Location: Canyon Lake, Texas
Trailer: 2015 19 "Past Tents", 2021 F150 Lariat 2.7L EB
Posts: 10,222
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Quote:
Originally Posted by Fox hunt
My fridge started working on pro pain on the way home from my trip I was plugged in to elect the whole time and it didn't work but suddenly started on my way home .
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Sounds like the fridge was set to Automatic. With AES it will pick the best fuel source. When it was connected to shore power, AES ran it on electric.
If you manually selected gas while camped and it didn't run on gas, there's another problem.
__________________
"You can't buy happiness, but you can buy an RV. And that is pretty close."
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07-20-2015, 06:09 AM
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#18
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Senior Member
Join Date: Sep 2009
Location: Southwick, Massachusetts
Trailer: None, sold my 2014 5.0TA
Posts: 7,124
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Quote:
Originally Posted by peter
Hope this topic is ok on this thread. My question is can I drive all day in the sunshine using solar power( 95watts) with my fridge on or will it drastically reduce my batteries. Assuming there is nothing in the fridge that starts with P.Thanks in advance. Peter
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You don't mention what size the fridge is.
I can travel with my 6.7cf fridge and my vehicle without draining the batteries if I only travel in the middle of a sunny day and don't turn off the vehicle.
In practice, on an 9 hour drive last Sept I dropped 20 Ah by the time I pulled over, 6 am start.
Fridge 14-15 Ah
Alternator feed 10-12 Ah
160w Solar 8-9 Ah max
(Readings per Trimetrics Monitor)
The solar panel output varies as the sun rises and falls, the 160 goes from around 0 Ah at 8am to 7-9 Ah at around noon. I get 4-5 hours of fairly high output a day here in New England. I would expect this to vary depending on where you are, latitude, altitude, obstructions, etc.
__________________
Happy Motoring
Bob
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