[wxqc] Opinions please -- New design for solar radiation shielding

[Dexter McIntyre W4DEX]

My weather station is located at a business in a small town.  There was no place 
at ground level to locate the temp/humidity sensor.  So I decided to try a fan 
aspirated 4 inch PVC pipe attached to a tower.  Like Jim's design below I'm 
using a 12 volt computer fan but it's running about half speed on 6 volts.  So 
far this seems to work fairly well even though It isn't cute like Jim's bird house.

Pictures at:

http://www.flickr.com/photos/7916375@N06/

Dex, W4DEX, AS618

jim wrote:

> I constructed a shield out of 4" PVC "sewer pipe" and 2  90 
> degree L's forming a "U" shape with a  12V 4" computer fan sucking the 
> air from the opposite end from the sensor. I used 4" PVC because of the 
> size of the fan and the sensor housing you can adjust the size to fit 
> your requirements.
> I placed this in a "Bird house" with the input end in the bottom of the 
> bird house at approx. 5' height. I also insulated the bird house on the 
> inside with garage door insulation.  pictures are on my QC summery page. 
> I can provide more pictures if you need them or questions. contact me at 
> jimwc at frontiernet.net <mailto:jimwc at frontiernet.net>
>  
> Jim
> CW4367