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Author Topic: Solar Kiln Conditions And Variables - Automated Approach  (Read 199 times)

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Offline Pepe_Silvia

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Solar Kiln Conditions And Variables - Automated Approach
« on: February 19, 2020, 02:08:03 PM »

Since I have basically finished the construction of my solar kiln, I'm going to move on to automation and data collection.

The plan is to have the following measurements:
  • Temperature Inside Kiln (2 locations)
  • Temperature Outside Kiln
  • Humidity Inside Kiln (2 locations)
  • Humidity Outside Kiln
  • Ambient Light Sensors Inside Kiln
  • Probes In Sample Wood To Measure Resistance/MC

There will also be a relay to control the two fans, which will be ~1400 CFM apiece gable mount fans.

After some perusal of the forum, I've found that there are two conditions I should be using to determine when the fans should be running.

Can someone quantify what 'too low' is in the context of humidity inside the kiln?  What should my trigger point be to turn the fans on?

Any other measurements I should be taking?

Offline GeneWengert-WoodDoc

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Re: Solar Kiln Conditions And Variables - Automated Approach
« Reply #1 on: February 19, 2020, 04:27:23 PM »
"Too low" depends on species
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline Pepe_Silvia

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Re: Solar Kiln Conditions And Variables - Automated Approach
« Reply #2 on: February 19, 2020, 08:10:12 PM »
Is there a reference where I could look it up and set it depending on what species I'm drying?  Or is that something I'm going to have to learn on my own?


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