Danfoss type refrigerator questions....
Danfoss type refrigerator questions.... We are thinking of replacing our still working ten year old Dometic 2662 with a Vitrifrigo dp2600iAc. Our trailer has 400 watts of solar and two group 24 ...
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What i really like about the danfoss/secop units is that one can easily run 0.5 amps of fans that cycle on and off with the compressor. Another fan to exhaust the heat generated by the cooling unit will greatly improve performance, compared to the cooling unit having only passive vents.
I upgraded my 120Mm compressor fan to a Noctua NF-f12 and moved it to the other side of condenser so it pushes air through it.
Duty cycle dropped instantly, along with noise and amp draw consumed by the fan.(The noctua is ~53cfm for 0.05amps)
The danfoss's compressor speed ( 2000 to 3500rpm) is controlled by the thermostat circuit. Add more resistance and the faster is spins and more amp draw is has.
My VF c51is came with a 270 ohm resistor to run it at ~2500 rpm. I removed it to run it at 2000 rpm. Extra insulation, and a 40MM low cfm low amp draw interior fan and the Noctua fan pushing air through condenser, once, with no chance of recycling preheated air, well this fridge performs awesome, cools stuff quickly, and rarely consumes more than 1Ah per hour.
This is only a 1.8 cubic foot fridge. I can't estimate battery draw on a larger fridge in another application/ installation.
I can say one can improve its efficiency greatly with a a little foresight regarding insulation and cooling unit ventilation, as opposed to just stuffing it in the cabinet as is.
I upgraded my 120Mm compressor fan to a Noctua NF-f12 and moved it to the other side of condenser so it pushes air through it.
Duty cycle dropped instantly, along with noise and amp draw consumed by the fan.(The noctua is ~53cfm for 0.05amps)
The danfoss's compressor speed ( 2000 to 3500rpm) is controlled by the thermostat circuit. Add more resistance and the faster is spins and more amp draw is has.
My VF c51is came with a 270 ohm resistor to run it at ~2500 rpm. I removed it to run it at 2000 rpm. Extra insulation, and a 40MM low cfm low amp draw interior fan and the Noctua fan pushing air through condenser, once, with no chance of recycling preheated air, well this fridge performs awesome, cools stuff quickly, and rarely consumes more than 1Ah per hour.
This is only a 1.8 cubic foot fridge. I can't estimate battery draw on a larger fridge in another application/ installation.
I can say one can improve its efficiency greatly with a a little foresight regarding insulation and cooling unit ventilation, as opposed to just stuffing it in the cabinet as is.
