Home » Public Forums » GMCnet » [GMCnet] Replacement refrigerator
| [GMCnet] Replacement refrigerator [message #155362] |
Wed, 04 January 2012 09:59  |
Peter Garry
Messages: 138
Registered: July 2011
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I appreciate the comments proffered. The decision to go "all electric" is not necessarily an economic one, although $ do play an important role. I am an architect and have an interest in designing living spaces that could be "off line". A refrigerator is a major energy user, so a 12v frig needs to be as efficient as possible, so I'm looking at all options. One being to use a 12v Danfoss compressor hooked up to a SOB refrigerator.
PeterG
TZE033V100713
'73 23' (Once a painted Desert)
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| Re: [GMCnet] Replacement refrigerator [message #155366 is a reply to message #155365] |
Wed, 04 January 2012 10:32  |
eljefeweizen
Messages: 9
Registered: January 2012
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Truckfridge has some options:
http://www.truckfridge.com
On Jan 4, 2012, at 10:20 AM, D C *Mac* Macdonald wrote:
>
> Vitrifrigo makes an 8 or 8.5 cu. ft. model
> with the Danfoss compressor that runs on
> 12 or 24 Volt DC and 120 Volt AC.
>
> I have one of those I put on my boat and
> then removed after the boat was destroyed
> in a weather incident. It now sits in my
> garage as a spare fridge awaiting install
> in my GMC coach.
>
> I bought it from Defender Marine. Not cheap
> but does pretty well.
>
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
>
>
>
>
>> From: petergarry@me.com
>> Date: Wed, 4 Jan 2012 08:59:03 -0700
>> To: gmclist@temp.gmcnet.org
>> Subject: [GMCnet] Replacement refrigerator
>>
>> I appreciate the comments proffered. The decision to go "all electric" is not necessarily an economic one, although $ do play an important role. I am an architect and have an interest in designing living spaces that could be "off line". A refrigerator is a major energy user, so a 12v frig needs to be as efficient as possible, so I'm looking at all options. One being to use a 12v Danfoss compressor hooked up to a SOB refrigerator.
>>
>> PeterG
>> TZE033V100713
>> '73 23' (Once a painted Desert)
>
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| Re: [GMCnet] Replacement refrigerator [message #155400 is a reply to message #155362] |
Wed, 04 January 2012 15:32 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
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I was with you until you said OFF LINE.
There is NO ELECTRIC that will survive off line.
THE MOST EFFICIENT frig is the propane fueled unit. If it requires 12vdc, it is minimal and even a solar panel can keep up with the power use.
If you are off line, you will be talking a lot of solar panels and batteries to try to keep the frig going.
I read here from someone...
one 12vdc battery which stores 100AH will supply 5 AMP for 20 hours
I have not tested that theory but for the time being I use that as a guide to try to figure solar power use trends.
It might be helpful to you.
JAN 4
Never assume a person of authority is "into levity." Ask your doctor if he saw the cartoon of the nurse who announced to the patient, "The doctor will bill you now," and he will stare at you for a long time and say, "How long hae you had these headaches?"
Erma Bombeck
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Replacement refrigerator [message #155456 is a reply to message #155362] |
Wed, 04 January 2012 21:33 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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| Peter Garry wrote on Wed, 04 January 2012 10:59 |
I appreciate the comments proffered. The decision to go "all electric" is not necessarily an economic one, although $ do play an important role. I am an architect and have an interest in designing living spaces that could be "off line". A refrigerator is a major energy user, so a 12v frig needs to be as efficient as possible, so I'm looking at all options. One being to use a 12v Danfoss compressor hooked up to a SOB refrigerator.
PeterG
TZE033V100713
'73 23' (Once a painted Desert)
|
Peter,
Before you get too far, Danfoss is a compressor only manufacturer. The supply specialty compressors to Adler/Barbour that puts together kits and complete units. From what I heard last, Adler/Barbour had been acquired by Dometic.
Also, if you have what once was a GMC 23'. There is not a lot of room for a refrigerator in the place where the original was installed.
Good Luck Guy
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Replacement refrigerator [message #155554 is a reply to message #155400] |
Thu, 05 January 2012 13:50 |
Greg and April
Messages: 263
Registered: December 2011
Karma: 0
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Senior Member |
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The most efferent fridge may be a propane unit, but are not propane units
basically absorption based, which require fairly level conditions in order
to work properly?
The problem I see, is that if this is true, a single day of driving I-70 in
Colorado, is little more than up and down mountain driving with grades that
can exceed the angle at which absorption units require for proper working
conditions.
.
Greg H.
Yeah, I'm odd that way.
.
----- Original Message -----
From: "Larry C" <slawrence111@yahoo.com>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, January 04, 2012 14:32
Subject: Re: [GMCnet] Replacement refrigerator
>
>
> I was with you until you said OFF LINE.
>
> There is NO ELECTRIC that will survive off line.
>
> THE MOST EFFICIENT frig is the propane fueled unit. If it requires 12vdc,
> it is minimal and even a solar panel can keep up with the power use.
>
> If you are off line, you will be talking a lot of solar panels and
> batteries to try to keep the frig going.
>
> I read here from someone...
>
> one 12vdc battery which stores 100AH will supply 5 AMP for 20 hours
>
> I have not tested that theory but for the time being I use that as a guide
> to try to figure solar power use trends.
>
> It might be helpful to you.
>
>
> JAN 4
>
> Never assume a person of authority is "into levity." Ask your doctor if
> he saw the cartoon of the nurse who announced to the patient, "The doctor
> will bill you now," and he will stare at you for a long time and say,
> "How long hae you had these headaches?"
>
> Erma Bombeck
> --
> Gatsbys' CRUISER :d 08-18-04
> 74 GLACIER X, 260/455-APC-4 Bagg'r
> Remflex Manifold gaskets
>
> CampGrounds needed, Add yours to "PLACES" />
> http://www.gmceast.com/travel
>
> _
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Replacement refrigerator [message #155560 is a reply to message #155554] |
Thu, 05 January 2012 15:15 |
tmaki
Messages: 200
Registered: September 2005
Karma: 0
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Senior Member |
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On 1/5/2012 11:50 AM, Greg and April wrote:
> The most efferent fridge may be a propane unit, but are not propane units
> basically absorption based, which require fairly level conditions in order
> to work properly?
>
> The problem I see, is that if this is true, a single day of driving I-70 in
> Colorado, is little more than up and down mountain driving with grades that
> can exceed the angle at which absorption units require for proper working
> conditions.
Interstate highway specifications state up to 6% grade in
mountainous areas. That's what - +/- three and a half
degrees or so? This from Thetford (probably something
similar from any manufacturer you might be considering):
"How level must the refrigerator be?
If you have a gas absorption refrigerator, normal leveling
of the vehicle is sufficient. The refrigerator is made to
operate within 3 degrees off level side-to-side and 6
degrees off level front-to-back (looking at the front of the
refrigerator)."
Besides, considering how many hundreds of thousands, if not
millions of RVs with operating refrigerators have driven
I-70, there has to be a big pile of steaming, disappointed
RV'ers out there somewhere when they found their fridges
done in.
I've always figured that no matter how much "up" angle
you're encountering, there's a corresponding "down" angle.
Over time and distance, it all comes out level. The
refrigerant never really gets a chance to pool up anywhere.
My guess would be that the manufacturers of RV refrigerators
anticipate how and where the appliance will be used and have
factored that into the design. They've been doing it a long
time. Gas refrigerators are one of the most reliable and
long-lived RV components out there.
Can't think of any reason to over-think it.
Toby Maki
'73 Glacier 230
Riverside, CA
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| Re: [GMCnet] Replacement refrigerator [message #155564 is a reply to message #155554] |
Thu, 05 January 2012 15:22 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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All of the propane refers I have had have not been that picky of being
level and I leave them on while driving without problem.
Sully
77 Royale
On Thu, Jan 5, 2012 at 11:50 AM, Greg and April
<gregandapril@earthlink.net>wrote:
> The most efferent fridge may be a propane unit, but are not propane units
> basically absorption based, which require fairly level conditions in order
> to work properly?
>
> The problem I see, is that if this is true, a single day of driving I-70 in
> Colorado, is little more than up and down mountain driving with grades that
> can exceed the angle at which absorption units require for proper working
> conditions.
> .
>
> Greg H.
>
> Yeah, I'm odd that way.
>
> .
> ----- Original Message -----
> From: "Larry C" <slawrence111@yahoo.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Wednesday, January 04, 2012 14:32
> Subject: Re: [GMCnet] Replacement refrigerator
>
>
> >
> >
> > I was with you until you said OFF LINE.
> >
> > There is NO ELECTRIC that will survive off line.
> >
> > THE MOST EFFICIENT frig is the propane fueled unit. If it requires
> 12vdc,
> > it is minimal and even a solar panel can keep up with the power use.
> >
> > If you are off line, you will be talking a lot of solar panels and
> > batteries to try to keep the frig going.
> >
> > I read here from someone...
> >
> > one 12vdc battery which stores 100AH will supply 5 AMP for 20 hours
> >
> > I have not tested that theory but for the time being I use that as a
> guide
> > to try to figure solar power use trends.
> >
> > It might be helpful to you.
> >
> >
> > JAN 4
> >
> > Never assume a person of authority is "into levity." Ask your doctor
> if
> > he saw the cartoon of the nurse who announced to the patient, "The doctor
> > will bill you now," and he will stare at you for a long time and say,
> > "How long hae you had these headaches?"
> >
> > Erma Bombeck
> > --
> > Gatsbys' CRUISER :d 08-18-04
> > 74 GLACIER X, 260/455-APC-4 Bagg'r
> > Remflex Manifold gaskets
> >
> > CampGrounds needed, Add yours to "PLACES" />
> > http://www.gmceast.com/travel
> >
> > _
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Replacement refrigerator [message #155569 is a reply to message #155554] |
Thu, 05 January 2012 15:58 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Why would Dometic and Norcold manufacture propane powered fridges if there was a problem with this?
Regards,
Rob M.
-----Original Message-----
From: Greg and April
The most efferent fridge may be a propane unit, but are not propane units
basically absorption based, which require fairly level conditions in order
to work properly?
The problem I see, is that if this is true, a single day of driving I-70 in
Colorado, is little more than up and down mountain driving with grades that
can exceed the angle at which absorption units require for proper working
conditions.
Greg H.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Replacement refrigerator [message #155586 is a reply to message #155400] |
Thu, 05 January 2012 17:46 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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I have had some thought about your "off line" theory.
Since I was in a 7 day outage this past Summer, I can tell you how fast the cold falls out when the door is open, its a matter of seconds.
If you are bound and determined to go electric here are MY suggestiions....
1....The frig must be top loaded, no side door ways.
2....The frig will need to run at least once a day to cool the inside commodities
3....You can only open, take what you want and close the top door quickly. Yes cold does stay low but any room current will invade the frig spaces.
4....Think strongly about filling some plastic bottles 3/4 with water and freeze them to help keep the cold in the frig.
I use the bottle technique in the NorCold in the GMC when I travel. I don't have to turn on the frig at rest areas or if we nap for a few hours because the ICE keeps the frig cold.
If you are dead against the top-loading frig, you should think Propane.
Just my thoughts
Gatsbys' CRUISER 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Replacement refrigerator [message #155588 is a reply to message #155560] |
Thu, 05 January 2012 18:05 |
Greg and April
Messages: 263
Registered: December 2011
Karma: 0
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Senior Member |
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Ok, while specifications say 'up to 6%', we all know that in plenty of cases
the grade can reach 7% on the interstate - Vail pass and the run to
Eisenhower tunnel to name a couple on I-70, Sandstone ( eastbound ) on I-64
to name another. Now even a 6% grade translates to a 3.4 - 3.5* angle and
a 7% grade is 4* side to side, fair enough?
Even considering all of the absorbtion refegerators, being used, I am asking
because I do not know one way or the other.
Finally, there is a final issue that I must consider, and that is the fact
that as I mentioned in another thread, my driveway sits at a 6.7% slope (
and the street in front of my house is not much better ), so while in theory
"no matter how much "up" angle you're encountering, there's a corresponding
"down" angle", is true, in practice it may be a different matter, if the RV
is parked on the slope for days or weeks between use, or for
maintenance/repairs. The question that I face is one of whether or not an
absorbtion refrigerator would survive just being parked in my driveway.
.
Greg H.
Yeah, I'm odd that way.
.
----- Original Message -----
From: "tmaki" <tmaki@earthlink.net>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, January 05, 2012 14:15
Subject: Re: [GMCnet] Replacement refrigerator
>
>
> Interstate highway specifications state up to 6% grade in
> mountainous areas. That's what - +/- three and a half
> degrees or so? This from Thetford (probably something
> similar from any manufacturer you might be considering):
>
> "How level must the refrigerator be?
>
> If you have a gas absorption refrigerator, normal leveling
> of the vehicle is sufficient. The refrigerator is made to
> operate within 3 degrees off level side-to-side and 6
> degrees off level front-to-back (looking at the front of the
> refrigerator)."
>
> Besides, considering how many hundreds of thousands, if not
> millions of RVs with operating refrigerators have driven
> I-70, there has to be a big pile of steaming, disappointed
> RV'ers out there somewhere when they found their fridges
> done in.
>
> I've always figured that no matter how much "up" angle
> you're encountering, there's a corresponding "down" angle.
> Over time and distance, it all comes out level. The
> refrigerant never really gets a chance to pool up anywhere.
> My guess would be that the manufacturers of RV refrigerators
> anticipate how and where the appliance will be used and have
> factored that into the design. They've been doing it a long
> time. Gas refrigerators are one of the most reliable and
> long-lived RV components out there.
>
> Can't think of any reason to over-think it.
>
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| Re: [GMCnet] Replacement refrigerator [message #155592 is a reply to message #155588] |
Thu, 05 January 2012 18:31 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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I live in Colorado and dry camp all the time in the mountains. If you are
MOVING (that is the key)have the frig works. I also live on a hill and my
driveway is steep, therefore I have to use 120v to get the frig to
initially get cold and than switch over to propane when we start on our
trip.
On Thu, Jan 5, 2012 at 5:05 PM, Greg and April
<gregandapril@earthlink.net>wrote:
> Ok, while specifications say 'up to 6%', we all know that in plenty of
> cases
> the grade can reach 7% on the interstate - Vail pass and the run to
> Eisenhower tunnel to name a couple on I-70, Sandstone ( eastbound ) on I-64
> to name another. Now even a 6% grade translates to a 3.4 - 3.5* angle
> and
> a 7% grade is 4* side to side, fair enough?
>
> Even considering all of the absorbtion refegerators, being used, I am
> asking
> because I do not know one way or the other.
>
> Finally, there is a final issue that I must consider, and that is the fact
> that as I mentioned in another thread, my driveway sits at a 6.7% slope (
> and the street in front of my house is not much better ), so while in
> theory
> "no matter how much "up" angle you're encountering, there's a corresponding
> "down" angle", is true, in practice it may be a different matter, if the RV
> is parked on the slope for days or weeks between use, or for
> maintenance/repairs. The question that I face is one of whether or not
> an
> absorbtion refrigerator would survive just being parked in my driveway.
>
> .
>
> Greg H.
>
> Yeah, I'm odd that way.
>
> .
> ----- Original Message -----
> From: "tmaki" <tmaki@earthlink.net>
> To: <gmclist@temp.gmcnet.org>
> Sent: Thursday, January 05, 2012 14:15
> Subject: Re: [GMCnet] Replacement refrigerator
>
>
> >
> >
> > Interstate highway specifications state up to 6% grade in
> > mountainous areas. That's what - +/- three and a half
> > degrees or so? This from Thetford (probably something
> > similar from any manufacturer you might be considering):
> >
> > "How level must the refrigerator be?
> >
> > If you have a gas absorption refrigerator, normal leveling
> > of the vehicle is sufficient. The refrigerator is made to
> > operate within 3 degrees off level side-to-side and 6
> > degrees off level front-to-back (looking at the front of the
> > refrigerator)."
> >
> > Besides, considering how many hundreds of thousands, if not
> > millions of RVs with operating refrigerators have driven
> > I-70, there has to be a big pile of steaming, disappointed
> > RV'ers out there somewhere when they found their fridges
> > done in.
> >
> > I've always figured that no matter how much "up" angle
> > you're encountering, there's a corresponding "down" angle.
> > Over time and distance, it all comes out level. The
> > refrigerant never really gets a chance to pool up anywhere.
> > My guess would be that the manufacturers of RV refrigerators
> > anticipate how and where the appliance will be used and have
> > factored that into the design. They've been doing it a long
> > time. Gas refrigerators are one of the most reliable and
> > long-lived RV components out there.
> >
> > Can't think of any reason to over-think it.
> >
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Bruce Hart
GMC Wannabe
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Replacement refrigerator [message #155599 is a reply to message #155592] |
Thu, 05 January 2012 19:09 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Using 120 v or propane is not going to make a difference if the
refrigerator is off level. The electric just is a heating element.
Actually I have found that propane cools faster than the electric.
If you are parked on a steep slope you should not use either propane
or electric as the ammonia / water mixture will become trapped in the
system and will crystalize as ammonia salts and permanentslly plug the
tubes thus ruining the refrigerator.
Emery Stora
On Jan 5, 2012, at 5:31 PM, Bruce Hart <hartsgmc@gmail.com> wrote:
> I live in Colorado and dry camp all the time in the mountains. If
> you are
> MOVING (that is the key)have the frig works. I also live on a hill
> and my
> driveway is steep, therefore I have to use 120v to get the frig to
> initially get cold and than switch over to propane when we start on
> our
> trip.
>
> On Thu, Jan 5, 2012 at 5:05 PM, Greg and April
> <gregandapril@earthlink.net>wrote:
>
>> Ok, while specifications say 'up to 6%', we all know that in plenty
>> of
>> cases
>> the grade can reach 7% on the interstate - Vail pass and the run to
>> Eisenhower tunnel to name a couple on I-70, Sandstone ( eastbound )
>> on I-64
>> to name another. Now even a 6% grade translates to a 3.4 - 3.5*
>> angle
>> and
>> a 7% grade is 4* side to side, fair enough?
>>
>> Even considering all of the absorbtion refegerators, being used, I am
>> asking
>> because I do not know one way or the other.
>>
>> Finally, there is a final issue that I must consider, and that is
>> the fact
>> that as I mentioned in another thread, my driveway sits at a 6.7%
>> slope (
>> and the street in front of my house is not much better ), so while in
>> theory
>> "no matter how much "up" angle you're encountering, there's a
>> corresponding
>> "down" angle", is true, in practice it may be a different matter,
>> if the RV
>> is parked on the slope for days or weeks between use, or for
>> maintenance/repairs. The question that I face is one of whether
>> or not
>> an
>> absorbtion refrigerator would survive just being parked in my
>> driveway.
>>
>> .
>>
>> Greg H.
>>
>> Yeah, I'm odd that way.
>>
>> .
>> ----- Original Message -----
>> From: "tmaki" <tmaki@earthlink.net>
>> To: <gmclist@temp.gmcnet.org>
>> Sent: Thursday, January 05, 2012 14:15
>> Subject: Re: [GMCnet] Replacement refrigerator
>>
>>
>>>
>>>
>>> Interstate highway specifications state up to 6% grade in
>>> mountainous areas. That's what - +/- three and a half
>>> degrees or so? This from Thetford (probably something
>>> similar from any manufacturer you might be considering):
>>>
>>> "How level must the refrigerator be?
>>>
>>> If you have a gas absorption refrigerator, normal leveling
>>> of the vehicle is sufficient. The refrigerator is made to
>>> operate within 3 degrees off level side-to-side and 6
>>> degrees off level front-to-back (looking at the front of the
>>> refrigerator)."
>>>
>>> Besides, considering how many hundreds of thousands, if not
>>> millions of RVs with operating refrigerators have driven
>>> I-70, there has to be a big pile of steaming, disappointed
>>> RV'ers out there somewhere when they found their fridges
>>> done in.
>>>
>>> I've always figured that no matter how much "up" angle
>>> you're encountering, there's a corresponding "down" angle.
>>> Over time and distance, it all comes out level. The
>>> refrigerant never really gets a chance to pool up anywhere.
>>> My guess would be that the manufacturers of RV refrigerators
>>> anticipate how and where the appliance will be used and have
>>> factored that into the design. They've been doing it a long
>>> time. Gas refrigerators are one of the most reliable and
>>> long-lived RV components out there.
>>>
>>> Can't think of any reason to over-think it.
>>>
>>
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>
>
>
> --
> Bruce Hart
> GMC Wannabe
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