Forum Discussion
C_Schomer
Aug 23, 2020Explorer
In the 70s and 80s I added sub coolers... water cooled exchangers and Penn head pressure control valves in the liquid lines of condensing units that were in hot equipment rooms and overworked ACs and that worked terrific to increase NRE - net refrigeration effect.
I remember seeing swamp cooler frames and pads that could be added to the face of condenser coil's and it dripped water over the pads just like a swamp cooler and cooled the air before it went thru the cond. coil. I thought that was a great idea but I was working at a plant with well over 100 RTUs and I had a bunch of large ones, up to 80 tons, with horizontal coils and swamper pads wouldn't have works. We had excellent water with very low hardness and I ran lawn sprinklers under those coils until I could add liquid line subcoolers, cooled with plant chilled water, to them.
I've been thinking about adding something to my home condensing unit. Swamper pads require staying on top of the maintenance. If the water were to stop, there would be a big air restriction in front of the coil, but the liquid line subcooler with a Penn control valve is fully automatic and will maintain a preset liquid line temperature no matter what the conditions are. Also, there's no negative effect if the water stops.
I also added a water subcooler to my recovery machine and it cut recovery time to a fraction of the time. Craig
I remember seeing swamp cooler frames and pads that could be added to the face of condenser coil's and it dripped water over the pads just like a swamp cooler and cooled the air before it went thru the cond. coil. I thought that was a great idea but I was working at a plant with well over 100 RTUs and I had a bunch of large ones, up to 80 tons, with horizontal coils and swamper pads wouldn't have works. We had excellent water with very low hardness and I ran lawn sprinklers under those coils until I could add liquid line subcoolers, cooled with plant chilled water, to them.
I've been thinking about adding something to my home condensing unit. Swamper pads require staying on top of the maintenance. If the water were to stop, there would be a big air restriction in front of the coil, but the liquid line subcooler with a Penn control valve is fully automatic and will maintain a preset liquid line temperature no matter what the conditions are. Also, there's no negative effect if the water stops.
I also added a water subcooler to my recovery machine and it cut recovery time to a fraction of the time. Craig
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