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<DIV><FONT size=2 face=Arial>Thank GF</FONT></DIV>
<DIV><FONT size=2 face=Arial> A well and pump of this nature is a good
investment and is independant of the grid to supply the
energy.</FONT></DIV>
<DIV><FONT size=2 face=Arial>H. </FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=gfwhell@aol.com href="mailto:gfwhell@aol.com">GF</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=gasification@lists.bioenergylists.org
href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, May 26, 2011 7:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Gasification] Underwater
gasification?</DIV>
<DIV><BR></DIV><FONT color=black size=2 face=arial>
<DIV><FONT face="Arial, Helvetica, sans-serif">Henri,</FONT></DIV>
<DIV>If you check out Humphrey's four stroke engine you will note that the
see/saw action of a large column of water in the "play pipe' acts like a
pendulum. Lets say the first stroke is caused by exploding a gas/air mixture
over this collumn of water.</DIV>
<DIV>Like the Mongulfier Ram this column absorbs the energy from an
explosion instead of gravity and moves up hill. discharging water onto a
higher level.</DIV>
<DIV>Once this column is moving it does not stop just because the explosion
has expanded down to atmospheric pressure. At this point check valves
open,allowing more water to follow the collumn up hill.</DIV>
<DIV>The first stroke is complete when the column loses momentum and returns
back to the pump, this is where the exhaust gasses are expelled through the
exhaust port of the engines cylinder head. The cylinder head is designed in
such a way as to have a compression dome which always contains a small ammount
of exhaust gas which is used as a "cushion" to absorb the weight and
force of the returning water This gas gets highly compressed and acting like a
spring stores the enegy imparted by the column and forces the column back up
the play pipe, This being the third stroke with less power but sufficient to
draw in more water behind it and more importantly a fresh charge of gas/air
mixture. This 2nd returning stroke is the compression stroke.</DIV>
<DIV>The valves on the cylinder heads of the chingford pumps had an automated
toggle action.The area of the play pipes immersed in the waters of the river
Lea had</DIV>
<DIV>several hundred inward facing spring loaded Bronze mushroom
valves which allowed water to follow the column up the play pipe and into
the George V reseviour which formed the majority of Londons drinking
water. There was never any complaint of tar contamination caused by the
action of these pumps.</DIV>
<DIV>The first pump Humphry built and tested was an 8" set up in
Birmingham with water tanks to measure performance and an anthrocite
gasifier to provide the gas<BR>Several test runs were made, weighing the fuel
used relating to the weight of water lifted to establish efficiency This first
pump had a wooden block of wood hanging on a chain inside the combustion
chamber,. forming the "Exhaust valve" which automically closed on the
returning column of water.</DIV>
<DIV>Addapting Humphreys' technology to compress air does not possess
insurmountable hurdles, I feel the use of a Deep Rock style well boreing kit
might come in handy to limit the footprint of such an engine.The methods of
compressing air are manifest all of which can be cleanely achieved with high
pressure water.</DIV>
<DIV> </DIV>
<DIV>GF</DIV>
<DIV
style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">-----Original
Message-----<BR>From: Henri Naths <c_hnaths@telusplanet.net><BR>To:
Discussion of biomass pyrolysis and gasification
<gasification@lists.bioenergylists.org><BR>Sent: Thu, May 26, 2011 11:35
am<BR>Subject: Re: [Gasification] Underwater gasification?<BR><BR>
<DIV id=AOLMsgPart_2_006acacc-9fa1-4744-8e60-ee625897b2f6>
<DIV><FONT size=2 face=Arial>Hi GF and list</FONT></DIV>
<DIV><FONT size=2 face=Arial>The advantage of a constant pressure explosion
would be I guess for a smoother delivery? Your air compressor
idea is very intriguing..could you explain how one would expel the burnt fuel
after the power stroke.</FONT></DIV>
<DIV><FONT size=2 face=Arial>H.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=gfwhell@aol.com href="mailto:gfwhell@aol.com">GF</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=gasification@lists.bioenergylists.org
href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 23, 2011 9:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Gasification] Underwater
gasification?</DIV>
<DIV><BR></DIV><FONT color=black size=2 face=arial>
<DIV style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">
<DIV id=AOLMsgPart_1_983d94a2-b7ed-4bf1-9141-7311baa7c1ce><FONT color=black
size=2 face=arial>
<DIV>Further to marine propulsion using the principles of a water
jet. The Humphrey pump I inspected at Chingford ran on coal gas, it did
not have the "high speed" suggested by Dan.</DIV>
<DIV>It performed ten power strokes a minute lifting ten tons of water 54
feet per stroke.The delivery pipe diameters were large, suggesting
high volume low velocity. This same pendulum action could be
achieved with suitable water conduits designed into the construction of the
vessels hull, low in the keel. the cross section of which need not
necessarily be circular.</DIV>
<DIV> Designing a propulsion system for a boat would probably require
the inclusion of an accumulator to provide a fairly constant pressure to an
"out put main" where jets at strategic points could be manipulated for
steering and manouverability.One feature of of an engine with a fluid piston
is the shape of the combustion chamber can be designed to suit a
constant pressure explosion, where as the piston can be cone
shaped increasing in surface area on descent.</DIV>
<DIV>I think it would be fairly simple and low cost to build an air
compressor to start with by boring a hole in the ground and install a pipe
within a pipe.and get a column of water "see sawing' up and down the
hole using the water as a ram to compress air, by exploding gas at
one end of the column</DIV>
<DIV style="CLEAR: both"></DIV>
<DIV>.</DIV>
<DIV> </DIV>
<DIV>GF<BR><BR></DIV>
<DIV
style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">-----Original
Message-----<BR>From: Anand Karve <<A
href="mailto:adkarve@gmail.com">adkarve@gmail.com</A>><BR>To: Discussion
of biomass pyrolysis and gasification <<A
href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>><BR>Sent:
Sun, May 22, 2011 11:33 pm<BR>Subject: Re: [Gasification] Underwater
gasification?<BR><BR>
<DIV
style="BACKGROUND-COLOR: #fff; MARGIN: 0px; FONT-FAMILY: Tahoma, Verdana, Arial, Sans-Serif; COLOR: #000; FONT-SIZE: 12px"
id=AOLMsgPart_0_5b985666-b81d-4ca3-a6a3-00eddec2c32c><PRE style="FONT-SIZE: 9pt"><TT>Dear List,
hauling a boat through water is much easier that pushing a loaded cart
over land. That is how wind pushed large ships around the world,
whereas for land transport one needed animal power. A steam jet looks
very attractive for a small boat. If one can take up the water
continuously from the river or lake itself, a relatively small boiler
would suffice for generating the steam.
Yours
A.D.Karve
On Mon, May 23, 2011 at 7:51 AM, Daniel Chisholm <<A href="mailto:dmc@danielchisholm.com">dmc@danielchisholm.com</A>> wrote:
> A Humphrey-inspired water jet is an interesting idea.
> FWIW I don't think it would be an efficient means of low speed marine
> propulsion though; it would suffer from low propulsive efficiency because
> the jet velocity would be too high. The efficiency of a reaction engine
> (which is something that generates thrust by accelerating and expelling mass
> - a very broad category that includes not just jet and rocket engines but
> also propellers on aircraft and ships) depends on the speed at which the
> mass is expelled. Accelerating a small mass to a large speed, is not as
> efficient as accelerating a larger mass to a lesser speed. If you look at
> aircraft jet engines today (high bypass ratio turbofans) you will notice
> that they are much larger in diameter than the jet engines of the 1950s
> (turbojets) - this is why.
>
> --
> - Daniel
> Fredericton, NB Canada
>
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--
***
Dr. A.D. Karve
President, Appropriate Rural Technology Institute (ARTI)
*Please change my email address in your records to: <A href="mailto:adkarve@gmail.com">adkarve@gmail.com</A> *
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