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

[Philip Gladstone]

Thomas Giella KN4LF wrote:
> Hi Bryce,
>
> I tried that design 20 years ago and it worked fairly well with forced 
> aspiration but shortwave radiation and precipitation entry was a problem at 
> certain times of the year. I ended up using a white plumbing PVC tee and a 
> couple of 45 degree elbows and that kept shortwave radiation and 
> precipitation out. For ventilation I used a DC 45 cfm computer type muffin 
> fan, with the fan sucking fresh air in from the front and passing across the 
> sensors before reaching the fan. This design worked as good as my louvered 
> Stevenson Screen.
>
> BTW the bottom of the shelter should be 4-5 feet above ground level.
>
>
>   
I am now using a similar design -- an inverted J made out of PVC with a 
muffin fan. See the pictures on 
http://weather.gladstonefamily.net/site/C0003

Philip