Back with a Hobbit Story

Hi All, I've been out for some time since Grad school Started. you can imagine why. It's VERY time consuming. But I've been up to a LOT. Really, I've been putting my money where my mouth is.
so in November a classmate of mine Kim P. and myself designed and built a test cell for thermal comfort. We also had help from my classmates Jacob, James, Melissa, and Alexandra. yau can go see it for yourself at the Center for Regenerative Studies at Cal Poly Pomona.

Essentially it is a hobbit hole with a large door facing south. We open up the door during the day and let in some sun that heats up stone tiles on the floor. We had initially been closing the door at around 3 pm but after we pulled the data we discovered it'd be best to shut the door no later than 1pm. I talk about why building underground is beneficial in a previous post.

The blue line is the temperature range inside the house and the red line is the temperature range outside. The yellow bar is the typical temperature range for thermal comfort. As you can see it did ok, but next time we should close the door at the peak of it's temperature gain. The lowest it got outside is just below 35 degrees and the lowest it got inside is just under 60 degrees while the warmest it got outside is just over 60 degrees but inside it got up to just over 85 degrees. This is all with passive methods and no energy usage.

When it's hotter in the summer we'll probably just need to keep the door closed and it'll stay cool all day.

Here's the opening line to The Hobbit
"In a hole in the ground there lived a hobbit. Not a nasty, dirty, wet hole, filled with the ends of worms and an oozy smell, nor yet a dry, bare, sandy hole with nothing in it to sit down on or to eat: it was a hobbit-hole, and that means comfort." - Tolkien