Quote:
Originally Posted by Moontanman
Nitack, where in Va do you live? under ground temps of 50 seem far too low for Va. In NC were I live temps underground are in the low 70's. I think you would have to go much farther north than Va to get temps in the 50's.
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I am in Manassas, so northern Virginia. However, the research I have found shows ground temps in my area of Virginia to be in the low to mid 50's at the depth I would be going to.
Here is a table from Virginia Tech with geothermal information at various drill depths. My house is pretty much in between either of these regions, but the data from either would put me in the mid-50's range.
http://rglsun1.geol.vt.edu/usgs1.html
http://rglsun1.geol.vt.edu/usgs5.html
Now weather or not water will condense in the system will be determined by the dew point for the specific conditions. The farmers almanac keeps some pretty detailed data on weather data and my area seems to have a high enough dew point on a good majority of days for my system to condense water.
Weather History for WASHINGTON DC DULLES, VA - The Old Farmer's Almanac
You might want to look into the data that they have for North Carolina as well.
North Carolina Wells
Although your underground temperatures do get into the 70's, that appears to only be the case when you get hundreds of feet underground. At 3-30 feet underground it appears to be in the same 50's range as my area. Although there will obviously be some areas that might have higher temperatures than others.
