Solar kiln - with solar panel and revised for correct air circulation

Step 9: Baffle installation

Per the VT design, an interior baffle is needed so that the air can flow across the solar collector to be heated, flow through the stack of wood, and then recirculate to be reheated.  Some moist air is discharged through vents in lower, back side of the kiln.  I have read that the vents only need to be opened slightly and also observed this at the lumber mill's solar kiln.  There is a balance between enough venting to remove moisture but not lose too much heated air.

The baffle is a wooden structure that supports the fans and uses Reflectiix as the baffle material.  The sunny side was spray painted flat black to absorb solar radiation.  I built the baffle in two halves because it was easier to handle and then overlapped the Reflectix to create a continuous surface  I attached a framework to the inside of the kiln to support the baffle.

I also cut holes in the solar collector behind the fans, to allow air recirculate.  

It would have been much easier to construct the baffle prior to installing the greenhouse roof and prior to loading the kiln with wood.  Don't make my mistake.