Door installed, temp readings

Got the door installed on the temp solarium today. Still some work needed but the whole thing is now functionally complete.

Did two simple tests to check function of the solarium. One was watching smoke from a cigarette placed at the top and bottom of the window. When placed at the top, heated air carried the smoke in and up. When placed at the bottom of the window, the smoke was carried out and downward. Meaning the thermosyphon effect is working.

The other test was placing an outdoor thermometer outside the kitchen window, just under rafter level of the solarium. The highest temp I noted was 96 F. This was while outdoor temp was 48 F and the indoor temp was 68 F. 

Now, one problem is that the cool air being drawn toward the window causes a draft of cold air. Your body does not care if cold air is coming from outside or inside. It's still cold air flowing over your body. So, I need to place a fan to draw cold air from the crawlspace into the solarium. This will supply enough cold air to likely eliminate the outward cold draft from the window. (Only the kitchen window, as the bathroom window is higher and smaller.) 

I may try venting heated air down into the crawlspace opening. Need a small fan and some ventilation hose for this. Placed the right direction, cooler air would still flow out through the crawlspace vent. This would also help heat the floors and provide heat which would last well after dark. Not to mention more consistent heating through the house. 

Real shame this doesn't work on cloudy days. Luckily, not many of those in the desert.