Thank you, Tom. That was elegantly said.
i hope all is well with you and that Winter is treating you tolerably.
Keep smiling!
Bill Klein,
3i
----- Original Message -----
From: Thomas Reed
To: Discussion of biomass pyrolysis and gasification
Cc: gasification at lists.bioenergylists.org
Sent: Saturday, February 26, 2011 7:04 PM
Subject: [Gasification] Benefits of boosting compression ratio with producergas
Dear Toby and all
Th compression ratio of the engine is a purely mechanical concept, the ratio of the cylinder volume at bottom dead center to that at top dead center, BDC/TDC. To this must be added any extra onto pressure from turbocharging,
Simple thermodynamics predicts and practice shows that both power and efficiency increase linearly with CR. Since producer gas has an octane over 180, various groups have been "souping up " gas engines, using CR in excess of 18/1. Little old producer gas has grown up.
Tom Reed. BEF
Dr Thomas B Reed
President, The Biomass Energy Foundation
www.Woodgas.com
On Feb 25, 2011, at 15:45, Toby Seiler <seilertechco at yahoo.com> wrote:
Bill and list,
Thanks for the post concerning compression ratio.
I'm under the impression that a small amount of positive pressure on the intake has a large effect in the engine power, in comparison to a vacuum intake. How do you think a gas and air pressure of 2-5 pounds or so, would affect the compression ratio / efficiency if one is using low pressure in producer gas making?
Perhaps someone has density information/chart and the way to relates to compression ratios.
Best regards,
Toby Seiler
Seilertechco
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