Friday, Aug 20, 2004 at 15:17
ADI test
Question;
The test was conducted before Reefer was involved in
portable fridges, so how is the name Reefer involved in the test report results, who and more importantly, why, has someone changed the original test report?
Fact;
Due to the number of fridges tested they actually ran out of amp accumulators, so the test numbers were averaged out, (refer table below)
Fact;
They took the highest power load and lowest and used the half way point as the average.
Fact;
the Liemack fridge uses an initial power surge for approximately 2 seconds at start up, the method of averaging the power figures is not an accurate method of collecting power consumption data when the results are then going to be averaged out to get a test result for any fridge.
Fact;
The Liemack with its 300 watt inverter is considerably worse off than the others simply because the initial inverter power surge is also calculated by the amp accumulator as a number, eg; 27 amps, for only 2 seconds, then the running of the fridge at ~6 amps for only 20 minutes per hour, gives an unreasonably high number when it is averaged out. You do the maths.
This can be confirmed by comparing the test result numbers with any of the power numbers stated by the fridge manufacturers and you will see the numbers are different, simply because the averaging method used in the test is not an accurate method of testing fridge power consumption.
Everkool claim: 3.80 amp not 1.90 amp as averaged tested
Waeco claim: 3.75 amp not 2.00 amp as averaged tested
Engel claim: 2.70 amp not 1.60 amp as averaged tested
ARB claim: 2.70 amp not 1.60 amp as averaged tested
Explorer claim: 3.00 amp not 2.40 amp as averaged tested
Autofridge claim: 24.00 amp not 16.25 amp as averaged tested
Are the ADI averaging test methods .... wrong?
or
are all the fridge Manufacturers .... wrong?
How can any test result be considered true, when it differs so drasticly from the recognised manufacturers own power consumption figures?
AnswerID:
73407
Follow Up By: Member - Brett H (QLD) - Tuesday, Sep 14, 2004 at 21:30
Tuesday, Sep 14, 2004 at 21:30
Read it thoroughly
Danfoss Compressor info direct fron Danfoss to you
FollowupID:
336193
Follow Up By: Mainey... - Thursday, Sep 16, 2004 at 22:28
Thursday, Sep 16, 2004 at 22:28
Brett H,
I have printed it, and yes read it, and because it was only relevant to the small fridges with the BD35F compressor, I would expect the power consumption to be higher on the models with the larger compressor....
in the graph "Current consumption" at 'zero' they appear to use between 4.0 and 6.2 A, depending on motor speed.
(if I read it wrong, please tell me)
*******************************************
Under "WIRE DIMENTIONS"
Danfoss recomends the following wire size's from the battery to the fridge compressor...
Maxium lengthWire size (Cross section MM2)
8 foot/2.5 mtr2.5mm square
13 foot/4.o mtr4.o mm square
19.5 foot/6.o mtr6.o mm square
32.8 foot/10.o mtr10.o mm square
.
FollowupID:
336490
Follow Up By: Member - Brett H (QLD) - Thursday, Sep 16, 2004 at 23:23
Follow Up By: Member - Brett H (QLD) - Thursday, Sep 16, 2004 at 23:30
Thursday, Sep 16, 2004 at 23:30
Mainey,
I don't understand how the data is to be interpreted or under what standard or conditions of test the figures regarding current use are defined. I guess the figures can be used as an indicator/ ratio between a heavily loaded compressor and anlightly loaded compressor.
It is good to note the difference the speed of the compressor makes.
Sorry couldn't be of more help.
FollowupID:
336497