db50 danfoss compressor power consumption

have a look at this site, their Tech Help may be able to help out.

www.rparts.com/index.asp

Mentioned elsewhere on a fridge comparison thread here recently, 75 watts at 100% duty cycle. At 24 volts near enough to 3 amps.

The fridge has no freezer compartment its just a big fridge made by kelvinater I dont know if they convert standard fridge over or wether they manufacture them like this. I'm guessing were looking at a 70% duty cycle for queensland weather? am I correct in thinking this the fridge will only be getting opened in the mornings at lunch and at night times for cooking dinner.

Hi Sam,

Found this pdf on www.danfos.com, it lists all the power consmption combinations of the 12/24V DB50.

BD50F_R134a_12-24VDC_04-04_Cd46b602.pdf

Driv'n Ivan

Some random thoughts from my disorganised mind!

I have a place at Moreton where we are all on solar power and with some serious party goers refrigeration attracts a lot of attention.

In fact at the time I went solar I was the first to go 240V AC thru a sine wave inverter - mainly because of the lower cost.

But a lot have regular Kelvinators/Westinghouse/Fisher & Paylel units converted 24V DC and all the solar electrical guys say they are much more efficient than a 240 thru the inverter - both the DC motor and the losses thru inversion etc.

But generally the biggest I have seen converted to the bd 50 have been around the 220 litre but with freezer and these seem to work OK. ie reasonable cycle times but it is very dependent on the type of use or in simple terms how often it is opened.

The only larger size I'm can recall is a 290 litre Kelvinator (with freezer) owned by the neighbour but it had some Italian unit in it because the fridgee said the bd50 did not have the capacity to run the larger size. Now with the family on holidays (ie opened fairly often) this unit went 24/7 and danced around the floor from working that hard. And it cost a poultice.

So how does that help.

Well if you put it in a van as a mobile you will need around 6X80W panels just to run it and it will need top up on dull days. Being able to rotate panels if possible does greatly increase yield.

If it is in a stationary position I would probably recommend 240V and the inverter - cheaper and less drama - that size 1.8-2 kWh per day would cover fairly hard use.

Mate enough from me. I'm not a techo but I & my mates have a lot of ownership experience with this stuff and feel free to ask any questions - you won't get a technical answer but I can tell you waht happens in real life.

Hi Gerard
I am assuming he means tracking the suns orbit from east to west.
I am currently building an automatic tracker for my house lights.
Wheeley

Hi RobEG
Im up to the wiring stage and Ive run my trenches and conduits.
The unit is a small battery powered unit designed and successfully installed in WA.
You only need to manually adjust it three times a year to suit the orbit as the day to day work is all automatic.
It sits flat at night find the sun at morning and follows all day then returns to flat after sundown.
It you have a grinder,drill and welder you make the frame yourself and attach the kit.
The kit retails for $599 inc GST & Freight.
You should have it complete for under $1200.
If you like you can email me at nitramir@bigpond.net.au and Ill send you some photos.
BTW one kit has the capacity to run two arrays of over 4sqM each.
The designer used 4x64W= 256W Unisol that produced around 14A and I started with 6x66W= 396W Monos that produces 22A but now ive taken 2x66W out and included a 165W 24V Sharp in the middle and I should get 25A at 12V.
Wheeley.