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Author Topic: Fridge cover equal more power consumption  (Read 453 times)

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Offline crabby1

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Fridge cover equal more power consumption
« on: Sun 27 Aug 17:37 2017 »
Been running factory cover on my Waeco 65L DZ fridge for about 10days now. Gone from 220-250watts to 320-360watts/24hrs.
Temp is set -10'c

Very interesting result.
Wonder if summer will have same results.
Will have wait and see.

Offline Taylyn it

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Re: Fridge cover equal more power consumption
« Reply #1 on: Mon 28 Aug 21:00 2017 »
That is an interesting result Crabby that's for sure, will be good to hear
how you go in summer.

Cheers Jason
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    Jason

    Offline crabby1

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    Re: Fridge cover equal more power consumption
    « Reply #2 on: Tue 29 Aug 04:47 2017 »
    Been a few suggestion from mesh of cover restricting air flow and that my mppt not recording usage now but tesult same on both units.


    Been wonder if cover is holding heat from direct sunshine of 2hrs per day and transferring that heat for longer to either inside inside via walls of fridge,  to temp sender for fridge or compressor unit so it not cooling like it should when it is running :-\

    Offline Taylyn it

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    Re: Fridge cover equal more power consumption
    « Reply #3 on: Tue 29 Aug 20:16 2017 »
    I was thinking about an air restriction being the cause, I might now do the
    same for mine to see if I get a similar result.

    Cheers Jason
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    Offline Muzza

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    Re: Fridge cover equal more power consumption
    « Reply #4 on: Tue 19 Sep 16:37 2017 »
    Air movement is key to these fridge/freezers working to optimum efficiency.

    My first fridge was just that, a 45l Chescold 3 way fridge that would not be termed a freezer by any stretch. We headed off around Oz back in the 80's and I wacked the back of the fridge hard up against the side wall of the old Hilux ute and slide the rear sliding window open half way to let in some ventilation. It wouldn't keep anything very cold.

    The next day for some reason I packed the truck with the fridge about 3 inches away from the side wall and with the breeze coming in through the window, it froze the tomatoes and eggs during the one days travel. I then installed 2 strips of foam on the back of the fridge to keep it clear and could turn it right down to maintain the required temp.

    Fridges seem to work better with cross flow, so if that cover is blocking off the heat exchange coils, that would be your problem.
    Muzz

    Offline crabby1

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    Re: Fridge cover equal more power consumption
    « Reply #5 on: Tue 19 Sep 18:16 2017 »
    Still installed same place but with cover was only change.

    Seems to have dropped consumption close to before.
    Thinking getting advantage against sun now verse past cooler nights of few weeks ago with now cover. The cover stopped the cool of the night cooling down the outside of fridge  :-\
    Spent bit time away last couple of nights and must say first time have heard it running at night ???

    But now keeps the sun off during day as advantage compared to no cover.

    Anyway its only first world problem,  would take 3-4days of clouds and rains before my batteries got down to concerning stage of charge.


    Interesting with last hind it was warmer night so stacked fridge with meat that night. Draw was around 450watts for the day including overnight run. Thats with temp set at 0.0'c.
    Swapped fridge to 2nd battery and mppt drew up to 145w out of my 165w panels.

    Discharge battery panel was producing 145w and battery that start day at full charge maxed out at 60w draw as fridge draws close to 3.0amps.

    Easier to explain around campfire or in bush somewhere rather than on here.

    Monitoring both batteries is interesting to myself more than a problem.