3 WAY FRIDGE GAS USAGE.
Submitted: Monday, Jan 13, 2003 at 15:48
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Rob
I have a 3 way 90L fridge in my Jayco wind up camper. The gas bottle is a 9kg bottle. How long will a full bottle last whilst running the fridge on gas. I imagine there are many variables, such as ambient temp and thermostat setting.
Lets say 25 - 30 deg ambient and thermostat set at half way.
I have no idea how long it will last, 3 days or 3 weeks. A rough idea will be very helpfull
Thanks for any helpfull comments
Rob.
Reply By: OziExplorer - Monday, Jan 13, 2003 at 16:56
Monday, Jan 13, 2003 at 16:56
Rob that fridge will use 350g/24 h approximately in summer, and as low as 250g/24 h in winter.
I would suggest you get a digital thermometer from Dick Smith Electronics like part no: Y5007 $29.88 www.dse.com.au
This will allow you to keep your fridge between 4°C and 6°C and not waste gas having it to cold or spoil food having it to warm. If you are filling it up with drinks/cold water/UHT milk etc. always try to do it at night.
I don't know if you realise the importance of having that fridge as close to level as possible. For an absorbtion fridge to work efficiently it is imperitive it is level. A small round bubble level can be purchased at most hardware stores, and can be placed just inside the camper door to allow you to set the camper up level. Some pieces of 17mm formply 300 x 180 are always useful to have to level the camper up properly.
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Reply By: rodeoowner - Monday, Jan 13, 2003 at 19:23
Monday, Jan 13, 2003 at 19:23
Hopefully you still have the fridge instruction manual. If not there will be a compliance plate on the rear of the fridge. There will be a gas usage figure in MJ/h. Depending on the size of the fridge it will probably be 2-3 MJ/h. For example, most of the 40-60 litre Chescold 'eski' fridges run at 0.85-1.05 MJ/h. Take the kg rating of your gas bottle and multiply it by 50. This will give you the Mj/h capacity of your bottle. Then divide this figure by the Mj/h rating of your fridge. This figure is your run time in hours.
ie. 9kg x 50 = 450
450/3 = 150 hours run time.
This figure will give you an indication of the run time you can expect. Whilst the fridge does work on a thermostat, the difference in Mj/h from high to low will be minimal.
Hope this helps (and doesn't sound too complicated).
Cheers.
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