Hi Pierre >Keith, > >I was thinking of building a 4-5 foot high solar cooker to heat a >black-painted drum of veg oil. > >Ever try it? > >Pierre
No, never tried it, but don't let that stop you. Lots of people have talked about using solar heat for pre-heating WVO, but, offhand, the only cases I know of people doing it are when they leave the containers outside in the sun. You're thinking of a box cooker? Kim suggests a parabola. There are resources and links at our website, for boxes and parabolas - Designing and building home made focusing solar cookers, Parabola Design Wood Model, A Tracking Solar Concentrator. file://localhost/Handmade/Desktop%20Folder/JTF%20web%20%C4/JTF/sc_link.html Solar Cooker Resources on the Web: Journey to Forever There's also this: "Parabola Calculator - About This Program: The purpose of this program was to try to find a simple way to calculate the (x, y) coordinates of the points along the curve of a parabola, so folks could easily make their own solar collectors with reasonable efficiency." The program also includes links to further parabola and solar resources on the web. If you or anyone else is interested in beta-testing this program, please contact me offlist. Windows-only, Windows 95 or later. It works but needs more beta-testing. Best wishes Keith ------------------------ Yahoo! Groups Sponsor ---------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
