Solar Cooker Research Begins
by James Wampler
(Shelbyville, Ky. USA)
Two weeks until winter break when I can begin my planning in earnest. This week I've been gathering resources to build my own ovens over the break.
My tentative plan is to build copies of the three main types of stoves in order to see if there are cheap/easy ways for students to create examples of their own. I'd like to build a panel cooker, a cardboard solar oven, and I'm even playing around with seeing if students could build a parabolic oven.
There was recently a gentleman on kickstarter who was selling the "Sun Juicer" which is a lightweight parabolic oven. When I was planning this months ago, I supported his campaign as a backup to securing a more professional model (The SolSource.) The sun juicer should arrive this week, and I am interested in the construction of this lightweight, low cost, highly portable burner as a model for student constructed copies.
I have purchased various reflective materials in an effort to gauge cost effectiveness, including reflective vinyl from this site - I'm interested to see what kinds of gains can be made in different reflective surfaces.
From a materials standpoint, I have an IR thermometer, and I'm still trying to find the best thermometer for reliable comparisons between ovens. As with all things in life, you can have cheap things, or you can have effective things...it is rare that you get both. If anyone else has experience with cheap and reliable oven thermometers that are accurate enough to be used for comparisons, I would love to hear about it!
Unfortunately, no pictures for this week! Our weather has been lousy - I plan to post updates with pictures on the construction of my own stoves soon when I have weeks like this. Sometimes winter can be a little more gray than I would like!