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Solar kilns and cold cloudy days11/29
I've got a Virginia Tech design solar kiln
We're now in the cloudiest time of year here
I'm drying fresh sawn 4/4 ash, which is entering
I can understand the lack of drying due to the
With no sun, and a cloudy day, at best, the temp
EMC charts show that at the 30-40 degree range,
So ... my question:
If the current conditions outside translate to
Also - is there a temperature and RH differential
Thoughts and opinions appreciated.
Sounds to me that under your winter conditions you are in zero gain situation using a solar kiln. Maybe you should consider adding a heater of some kind along with a small dehydrator to keep your drying process going.
As a rule of thumb, 50 F or warmer dries wood at a somewhat reasonable rate, if there is a low RH and air flow.
So, the VT kiln does not work well in cold weather.
A dehydrator, called a dehumidifier, needs about 70 F or warmer to operate. The VT kiln is not well insulated, with the clear roof, so heating in the winter to 70 F OR HOTTER is not practical. That is why dehumidifier kilns are well insulated buildings.