I had a look at the multi-page Defkalion press release May of 2012,
and on page 18 of the 35 page document there is a picture of one of
the spark plugs laying on a table. It is somewhat unusual in that it
has a very long threaded body. I did some looking and found a similar
plug from Ford Motorcraft Number SP-509. They are almost the same,
short of a body that is not quite threaded all the way to the tip.
Anyway I have to say that it most certainly a spark plug and not a glow plug.
Robert Dorr
At 12:44 PM 7/15/2012, you wrote:
I supposed DGT can replace spark plug for glow plugs to misdirect,
but that would still not explain the temp spike.
Sparks are the only mechanism that can bring H2 temps that high and
then quickly back down again. Glow plugs will not result in a temp spike.
When you look at the end plates of DGT reactors, you will notice
that the thermocouples are very close to the spark plug. A series
of sparks would quickly raise the temperature of the H2 gas in the
vicinity of the sparks, which is also where the thermocouples
are. Then a second later, the hot H2 gas diffuses and the temps are
down again. Hence a temp spike.
Jojo
----- Original Message -----
From: <mailto:[email protected]>Bob Higgins
To: <mailto:[email protected]>[email protected]
Sent: Monday, July 16, 2012 3:19 AM
Subject: Re: [Vo]:Harping on the Right Things!
After surfing the different glow plugs on the web, I believe that
Jojo is correct, that what is shown in the pictures offered by DGT
are probably spark plugs.
However, might there be misdirection in DGT's pictures? Would a
glow plug screw in place of the spark plug in their reactor? DGT
could have put the spark plugs in their reactor for the pictures,
while they normally use glow plugs in those positions. The spare
spark plug on the table was obvious and suspiciously left in the open.
Another possibility is that DGT found that the glow plugs were
wearing out too quickly and they modified their reactor for a
different type of heater that would have greater life. Since they
were left with the tapped glow plug holes, they plugged the holes
with the spark plugs. The spark plugs are never shown connected,
but everything else is shown connected.
The comment from W&M about DGT having trouble with the glow plugs
not lasting long enough goes with what Jojo observes for a glow plug.
I am not convinced either way.
Bob
On Sun, Jul 15, 2012 at 2:47 PM, Jojo Jaro
<<mailto:[email protected]>[email protected]> wrote:
And only if you want to waste your money. Like I said, they don't
last very long when used continously as would be the case if DGT
were using these to heat their reactors.
A heating cartridge would make more sense for heating.
I tried using glow plugs in my first generation reactors with so-so
results. They tend to overheat and melt your ingredients. Hard to
control heat output. They are designed to heat fast and
furious. Controllability is not an issue for their intended
application as Diesel engine preheaters as they are fired only for a
few seconds. but, even in their intended application in diesel
engines, they are one of the more frequently failing items.
Jojo
PS. Those pictures are definitiely spark plugs. No question about it.
----- Original Message -----
From: <mailto:[email protected]>Alain Sepeda
To: <mailto:[email protected]>[email protected]
Sent: Monday, July 16, 2012 2:14 AM
Subject: Re: [Vo]:Harping on the Right Things!
using a glowplug for heating is very natural, since it is very
resistant, cheap, and easy to find.
--
Regards,
Bob Higgins
