The Forestry Forum

General Forestry => Drying and Processing => Topic started by: vfauto on January 05, 2018, 06:30:44 PM

Title: Solar kiln this time of year
Post by: vfauto on January 05, 2018, 06:30:44 PM
I put a load of maple and walnut slabs in the new Solar kiln and wondering if it is a waste of time and electricity to run the fans when it is cold outside in New England. When the sun is out it reaches 135 degrees for a short time during the day.
Title: Re: Solar kiln this time of year
Post by: GeneWengert-WoodDoc on January 05, 2018, 10:28:10 PM
Two guidelines...the kiln temperature should be over 50F throughout, not just the gable.  When this hot, run the fans.

AND the kiln temperature throughout the kiln should be 25 F hotter than the outside.  In the winter, due to cold outside and low sun angles, you might run the fans for only a few hours on a sunny day in MA.

Get much snow?
Title: Re: Solar kiln this time of year
Post by: vfauto on January 05, 2018, 11:39:28 PM
Quote from: GeneWengert-WoodDoc on January 05, 2018, 10:28:10 PM
Two guidelines...the kiln temperature should be over 50F throughout, not just the gable.  When this hot, run the fans.

AND the kiln temperature throughout the kiln should be 25 F hotter than the outside.  In the winter, due to cold outside and low sun angles, you might run the fans for only a few hours on a sunny day in MA.

Get much snow? Thanks,got about 8"
Title: Re: Solar kiln this time of year
Post by: vfauto on January 06, 2018, 06:41:11 PM
 I took your advice and added a thermostat that overrides the timer when it is under 50° 

 (https://forestryforum.com/gallery/albums/userpics/23688/B0BA3B93-142A-4E3C-943E-61D3265158D9.jpeg?easyrotate_cache=1515281933)