Compressor fridges

Discussion in 'Tech/Mech General' started by Douglas, Oct 1, 2009.

  1. Douglas

    Douglas Read Only Funster

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    When we had a boat we had a compressor fridge, I built the fridge box and fitted the Italian unit to it, the box had 4" plus insulation and it worked very well.

    The gas fridge we have in the van is not realy coping very well with the heat down here and I am starting to think about a compressor model as a replacement. the only thing that is bothering me is pityfull lack of insulation in a commercial unit.

    Also I was thinking that I could convert a gas fridge to compressor as thay seem to have a space for the unit under the back of he cabinet.

    Any one got any comments? Jim?


    Doug...
     
  2. vwalan

    vwalan Funster

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    its an on going problem .normal three way fridges stop working at about 32c . i use a 240 household with inverter .alot use either weaco or engel 12volt .but they are expensive. you can buy a danfoss 12v compressor bit n buld your own . keep thinking about it myself. would like fridge /freezer . good for making lolly pops in the desert. tyed making icecream but never quite get it right. are you still near seville.cheers alan
     
  3. pappajohn

    pappajohn Funster Life Member

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    do you have a cooling fan in the top fridge vent, gets the heated air out quicker so gives the fridge a fighting chance......never tried it but it is supposed to make a diffence
     
  4. Neckender

    Neckender Funster

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    My van was fitted with a cooling fan in the top vent area by the manufactures, works great , but we havn't been abroad with this van yet. I thought that they fitted it because our sliding door covers the vents when open. your winter vent covers are not still fitted by any chance, I see a lot of motorhomes with covers still fitted and when you tell the owners they are amazed, as they had never had it explained to them.

    John.
     
  5. vwalan

    vwalan Funster

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    i,msure it will be just the hot weather in spain. i used to get the same trouble .when youget home it works fine. if i left here late i have light it here n except for changing gas bottles never had to relight it allthrough my winter trips. not so good if going through mauritainia n senegal was to hot again. compressor is the way forward.
     
  6. Tony Lee

    Tony Lee Read Only Funster

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    Installing a compressor fridge is the way to go, but only if you are prepared to find the power to run it. No problem if most of your time is on hook-up, but if you are a dedicated free camper, it means a considerable investment in solar panels and batteries. No more worrying that the van is level or switching it off gas when travelling or on ferries.

    Here in Oz, three-way fridges with a tropical rating are available and they will work at a higher temperature than standard.
    One major problem - that may be even worse in UK where high temperatures are uncommon - is that van builders are very slack about installing three-ways properly. Common errors are to have a large space at the rear of the cooling fins so the fix is to install baffles on the wall coming to within 1/2" of the fins so as to force the rising air through the fins rather than just bypass them. The other problem is a dead air space at the top of the fridge instead of having a smooth duct out the top vent.
    Adding a fan blowing in the bottom is also often counterproductive. Sucking out the top is usually better
     
    Last edited: Oct 1, 2009
  7. Douglas

    Douglas Read Only Funster

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    Yes, and to be honest it does not seem to make much difference after the mercury goes above 28/30

    Doug...
     
  8. Douglas

    Douglas Read Only Funster

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    http://www.marinesuperstore.com/posit/shop/index.php?selectedpartno=99176969

    All noted, power not a problem, 200 watt panel with 300 amp batt, fully charged by mid day, but compressor may eat into my computer/TV time.

    My fan is fastend to the bottom of the fins, might try it on the outlet grill!

    ...................... I am thinking, if I make my own convertion with fridge kit I can mount the compressor and cooling under the van and just bring in the evaporator lines through the floor, the Italian kit I used in the boat was arranged with sealing joints on the connections.

    Doug....
     
    Last edited: Oct 2, 2009
  9. johnsandywhite

    johnsandywhite Read Only Funster

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    :Sad: We found the same problem with our 630G as soon as we got to France and further south into Spain. I first thought it was because it was the cover vents that was not allowing it to cool. So I took them off. Made no difference what so ever. Rather annoying when our 1989 Kontiki worked brilliant in ALL weathers. :Angry:
     
  10. scotjimland

    scotjimland Funster Life Member

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    Hi Doug

    In our last euro van I had the same problem, so I fitted twin 12v computer fans exhausting on the top vent, which made a vast improvement ..

    I've never had a problem with the RV fridge, I guess it's designed to work in extreme temperatures and the top vent is on the roof. When I get my next euro van I will seriously consider fitting a compressor unit ..

    jim
     
  11. Douglas

    Douglas Read Only Funster

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    Just completed moving the fan from the bottom of the fins to the top vent and it seems to be making a difference, the fridge temp has dropped from 9.1 to 8.7 in half an hour and that is with the sun rising on the fridge side of the van. fingers crossed!!!

    Doug...
     
  12. scotjimland

    scotjimland Funster Life Member

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    Hi

    can you not turn the van round so the vents are in the shade .. ?

    jim
     
  13. Douglas

    Douglas Read Only Funster

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    We are parked in an internal road of a marina and to step out away from the road I need to fasing the East.

    Doug...
     
  14. vwalan

    vwalan Funster

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    when i built my trucj i deliberately put the fridge on the otherside to the door . as i like to be by the sea and prefer atlantic for surfing .i can now back up to the sea have the door in the sun ,but keep the fridge on the shadyside. makes me laugh when top proffesional concerters block the vents with the doors. i would just have to walk away . if they get a thing like that wrong makes me wonder about the rest of their design knowledge. have fun doug your making us all jealous.
     
  15. Douglas

    Douglas Read Only Funster

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    In one work, CRAP.

    Doug...
     
  16. McG

    McG Read Only Funster

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    Agree withat!!:Cool:

    I bought a Novakool compressor fridge/freezer from Canada. Thought they make good stuff. I am now planning to redo their insulation stuffup. Has anyone used C-foam on a fridge yet?
    Is there anything better to use as insulation?
     
  17. derekfaeberwick

    derekfaeberwick Read Only Funster

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    :coolthumb: Interesting van. (MH Model: 9m Nissan RM210 )

    How long before they hit our shores I wonder? Sorry, off topic.:Blush::welcome:
     
  18. vwalan

    vwalan Funster

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    hi derek. they have landed here .about 18mts ago they are called nissan civilians .some are diesel ,some compressednatural gas .they get converted to lpg here. wellhouse leisure have had one for sale and i know of 3 others a silver one redone and another white one. aug mmm2009 as one one their advert. 2003 converted for 23,000..make ideal base vehicles there will be lots more of this type of vehicles coming over soon . cheers alan.
     
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