Fan-less Air Conditioning
Fan-less Air Conditioning
(OP)
I'm designing a fanless aircondioner using aluminum fins on copper tube as the evaporator without a fan. This finned assembly will mount around a room as a valance and will cool the space by convection. This will pipe the freon directly through the copper. It is not the valance system that is sold by Edwards which uses chilled & heated water.
15 to 20 years ago there were companies selling these systems. One was Wilcox in Clearwater FL. The condenser was also finned cooper, mounted outdoors on a rack, again no fan.
These didn't use Expansion valves, but instead they had a "tilt tank" or a receiver for liquid storage that could be tilted to adjust the rate of expansion and the system charge.
There is a company in Lakeland FL, EarthLink Technologies, selling a direct burial geothermal AC system which uses a conventional airhandler with the expansion valve removed. They use a patented adjustable receiver to adjust the system charge.
Does anyone have knowledge of this valance, fan-less system? Can anyone help with the adjustable receiver design?
15 to 20 years ago there were companies selling these systems. One was Wilcox in Clearwater FL. The condenser was also finned cooper, mounted outdoors on a rack, again no fan.
These didn't use Expansion valves, but instead they had a "tilt tank" or a receiver for liquid storage that could be tilted to adjust the rate of expansion and the system charge.
There is a company in Lakeland FL, EarthLink Technologies, selling a direct burial geothermal AC system which uses a conventional airhandler with the expansion valve removed. They use a patented adjustable receiver to adjust the system charge.
Does anyone have knowledge of this valance, fan-less system? Can anyone help with the adjustable receiver design?





RE: Fan-less Air Conditioning
RE: Fan-less Air Conditioning
curved bottom. They are pressed on the 5/8 copper, about 42 fins per foot. Below the row of fins, you mount a 3/4" PVC drip pan, (like a 3/4" PVC pipe cut in half, 180 degrees). This drip pan is routed to a drain. This system makes a great de-humidifier. In Florida the fins never freeze up. An outdoor thermostat prevents operation when it's too cold outside to pull in heat (heating mode).
I'm planning to direct bury copper coils in a slinky arrangement instead of the fan-less coils outdoors.
A reversing valve provides the switch between cooling and heating modes.
RE: Fan-less Air Conditioning
RE: Fan-less Air Conditioning
I've talked to a contractor that buries copper piping for a geothermal refrigerant (R407) system. A big problem with doing this is that the buried part of the system only allows about 5-6 tons capacity. If you have a way of getting larger capacities out of it, great, I'd love to hear how you plan to set it up. The setup the contractor uses is a sort of vertical well that only goes down 50-60 feet.
The other big problem is corrosion of the copper piping. What are you doing to minimize the copper from corroding underground?