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...
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Funny I was looking up 170 CFM axieal fans in the Grainger catalog yesterday, and found one for my needs, they do sell smaller ones.
The large 1" diameter tubing looks like a freon receiver, and might be one. The warmest compressor gas is flowing directly to the top right freon tube, then it goes to the back, down one level to the front and continues. If the air intake is from the right to left, it would not make much sense. However it will work almost equally well with air flow from either direction. The coldest tube would be the lower left one, so if the air goes in the left side, it would be better, but really the efficiency change would probaly only be 2% to 4% difference.
By increasing air flow, you probably will decrease compressor amp draw, and the net effect should be less overall power consumption. Depending on the temperature where it s installed, it might save anywhere from -2% to 15% in energy by increasing from whatever size fan they have to a Grainger fan.
Look for Grainger part # 2RTJ6, and on the same page you will find several 12 VDC fans, this being the largest 4-11/16" square and about 1.2 amps, or 14 watts. I am considering 2 of these fans to help provide 12,000 cubic feet of make up air per hour into a 4,000 square foot house that is yet to be designed and built. This would provide a total air change every 1.8 to 2.2 hours.
No the compressor really does not care if air is blown across it. Will it reduce the freon pressure? Not really. It will not stop it from collecting ice if the box gets to cold either.
Fred.
The large 1" diameter tubing looks like a freon receiver, and might be one. The warmest compressor gas is flowing directly to the top right freon tube, then it goes to the back, down one level to the front and continues. If the air intake is from the right to left, it would not make much sense. However it will work almost equally well with air flow from either direction. The coldest tube would be the lower left one, so if the air goes in the left side, it would be better, but really the efficiency change would probaly only be 2% to 4% difference.
By increasing air flow, you probably will decrease compressor amp draw, and the net effect should be less overall power consumption. Depending on the temperature where it s installed, it might save anywhere from -2% to 15% in energy by increasing from whatever size fan they have to a Grainger fan.
Look for Grainger part # 2RTJ6, and on the same page you will find several 12 VDC fans, this being the largest 4-11/16" square and about 1.2 amps, or 14 watts. I am considering 2 of these fans to help provide 12,000 cubic feet of make up air per hour into a 4,000 square foot house that is yet to be designed and built. This would provide a total air change every 1.8 to 2.2 hours.
No the compressor really does not care if air is blown across it. Will it reduce the freon pressure? Not really. It will not stop it from collecting ice if the box gets to cold either.
Fred.
