Increasing Airflow through Condenser.
The new DC only compressor fridge I will soon have in my possession has a 92 mm computer muffin fan pulling air through only a portion(~85%) of the ~120mm tall condenser. It then blows this warmed a...
Forum Discussion
I've been scouring the web for all the info I can find, and basically the consensus is that The Danfoss compressors are extremely reliable. Their electronic controllers, much less so.
Adding resistors in the thermostat circuit can change the compressor rpm, and amp draw, but slowest is most efficient.
They say the control modules fail due to excessive heat, because the compartment is not ventilated properly, and the same heated air gets recycled again and through the condenser, reducing it's efficiency with each pass.
The best thing for efficiency is keeping a flow of ambient temp air flowing through the condenser. I am going to ensure this is the case, taking a few extra steps that the bean counters decided were too many beans worth.
I can easily power 2 120 mm 53 cfm fans that draw 0.08 amps each. One drawing air through the whole condenser via a shroud , one keeping a positive flow of ambient temp air flowing into the compressor compartment. More air moved quieter, less amps used and cooler compressor, and control module.
Am also considering putting in a variable resistor to change the compressor rpm, but this is likely overkill.
http://www.kollmann-marine.com/Fans.aspx#7._Condenser_Cooling_and_process_heat_disposal_Fan_or_fans.
Adding resistors in the thermostat circuit can change the compressor rpm, and amp draw, but slowest is most efficient.
They say the control modules fail due to excessive heat, because the compartment is not ventilated properly, and the same heated air gets recycled again and through the condenser, reducing it's efficiency with each pass.
The best thing for efficiency is keeping a flow of ambient temp air flowing through the condenser. I am going to ensure this is the case, taking a few extra steps that the bean counters decided were too many beans worth.
I can easily power 2 120 mm 53 cfm fans that draw 0.08 amps each. One drawing air through the whole condenser via a shroud , one keeping a positive flow of ambient temp air flowing into the compressor compartment. More air moved quieter, less amps used and cooler compressor, and control module.
Am also considering putting in a variable resistor to change the compressor rpm, but this is likely overkill.
http://www.kollmann-marine.com/Fans.aspx#7._Condenser_Cooling_and_process_heat_disposal_Fan_or_fans.
