I am currently experimenting with adapting copper cylinders which are heated via a coil using solar collectors, as a processing vessel for some stage of biofuel making. The reasoning is that I work for a company installing solar thermal systems and we usually replace the existing copper cylinders - their scrap value is minimal, so this is possibly a way to add some value to the copper cylinder and provide a simple vessel for small batch processing of biofuel ( eg.suitable for farmers) I realise that copper is not the most suitable material due to its chemical reactivity - but there does seem to be scope for its less problematic use at the heating stage..
Jan -----Original Message----- From: randallbarron1 [mailto:[EMAIL PROTECTED] Sent: 08 February 2002 14:42 To: biofuel@yahoogroups.com Subject: [biofuel] Re: ethanol distillation Okay, so solar stills are available, but do not produce a very high ethanol concentration with distillation. What about using solar energy to preheat your solution before it reaches a regular still. If you could preheat with solar power, less energy would need to be input it to the final distillation processes. Randall --- In [EMAIL PROTECTED], Keith Addison <[EMAIL PROTECTED]> wrote: > >I am new to this group so this may have already been answered before, > >but I have not been able to find any information on it yet. > > > >I keep seeing information about energy use for distillation being a > >limiting factor using ethanol as an alternative fuel source. Has > >anyone looked into using some sort of solar collector to provide the > >heat (or at least some of the heat) needed for distillation? > > > >Randall > > Hi Randall > > http://journeytoforever.org/biofuel_library/ethanol_manual/manual15.ht ml > Alcohol Fuel Manual Ch15 > Chapter 15 > SOLAR STILLS > > Also: > http://journeytoforever.org/ethanol_energy.html > Is ethanol energy-efficient? > > Best > > Keith Addison > Journey to Forever > Handmade Projects > Tokyo > http://journeytoforever.org/ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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/ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html 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/
