Motie, High pressure water was commonly used to debark logs in sawmills the US until about 1970 when environmental regulations limited water discharge. Since then most all hydraulic debarkers have disappeared in favor of mechanical debarkers because of the high cost of cleaning the water prior to discharge. It was a clean and efficient method of debarking with very little fiber loss.
Tom ----- Original Message ----- From: motie_d <[EMAIL PROTECTED]> To: biofuel@yahoogroups.com Sent: Wednesday, February 05, 2003 9:53 PM Subject: [biofuel] Re: Introduction and some questions - Newbie --- In biofuel@yahoogroups.com, "kirk" <[EMAIL PROTECTED]> wrote: > There is an out of print book "Novel Drilling Technoques" that in the second > edition talks about cutting sandstone at several meters per second with > liquid pressures of that magnitude. Granite I think was 7cm per second if > memory serves. > Obscure technology. > > Anyway, you can lose a lot more than just soft tissue. Even a couple hundred > psi can inject you like a hypodermic needle. Probably wouldn't be a good > thing to happen. > > Kirk > I did some experimentation last winter for a technology development company, using high pressure water to cut wood. At a lower pressure, the water can be used to easily and cleanly remove the bark,(which contains contaminants) then turn the pressure up to thinly slice the wood, removing water soluble extracts. Non-disclosure agreements won't allow further details. Sorry. Motie 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 the Yahoo! Terms of Service. [Non-text portions of this message have been removed] 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/
