My idea on a solar collector for BD involves running a heat eschanger. (disclaimer: I've been thinking about this for two years and haven't built it yet, so it's all in my head and needs to get taken with a greain of salt) The reason for the heat exchanger idea is that there are a few different points in the process which could benefit from heat and it seems to me that flexibility would be useful in what you can heat from your solar collector. (preheating before dewatering, then possibly preheating before making fuel (if you dewater on a different day) , heating wash water for less emulsion formation, or heating a wash tank to break an emulsion if it formed), or... all from one set of collecors. It of course means either having a heat exhchanger that you move in and out of a tank (I don' tlike this idea), or it means having a manifold with valves that can direct the heat eschang medium to different applications (more expensive parts-wise) which is what I want to do.
The simplest system however is something like a batch water heater- ie a large solar box cooker, with a barrrel of water or a domestic water heater painted black encased in it. the water doesn't circulate in the simplest scenario, the whole batch gets heated all at once and used up all at once . This setup gets water quite hot, and it should work well for water or for oil. Do a search on the internet and you should be able to find a few deigns for this kind of solar batch water heater... mark --- In biofuel@yahoogroups.com, "Brent S" <[EMAIL PROTECTED]> wrote: > No pics or drawings of it, and I plan on changing the design a bit too. And > haven't figured out if I'll run the oil through it or run a heat exchanger > off of it to the oil. Ill post what I can when I get it finished. > Brent > Saskatchewan, Canada > ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/aM1XQD/od7FAA/uetFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
