On Sep 22, 2011, at 1:53 PM, Alan J Fletcher wrote:
At 02:26 PM 9/22/2011, Horace Heffner wrote:
Lewan couldn't use it?
I can't find his statement that he measured the outflow through the
T-trap. I don't THINK I imagined it ....
I don't see how it is possible to get reasonable measurement using
the T-trap. If you look at the film at around 3:50 you can see the T-
trap is full. If you then look at 4:25 you can see the flow is very
fast, and could fill up the T-trap in a few seconds at most. A small
plastic container is being used by hand to capture the flow. Likely
that was later weighed.
Here is the film URL:
http://www.nyteknik.se/nyheter/energi_miljo/energi/article3264362.ece
Here are the notes regarding water overflow:
20:50 Overflow was approximately 3,7 grams/s or 13 kg/hour. T2=29.3°
C, T3=90.3°C.
20:55 Overflow decreases. T2=29.2°C, T3=93.4°C.
21:50 Liquid water at the outlet was measured and found to vary
between 1.4 and 1.8 grams/s or from 5.0 to 6.5 kg/hour.
So, it was not your imagination the overflow was measured. My point
(see below) was merely that the T-trap could not be used to make the
overflow measurements, at least not accurately. Measuring required
removing the hose and using a container to catch the flowing water.
Very inconvenient to do frequently. The T-trap was highly under sized.
On Sep 22, 2011, at 1:26 PM, Horace Heffner wrote:
On Sep 22, 2011, at 11:39 AM, Alan J Fletcher wrote:
At 12:18 PM 9/22/2011, Peter Heckert wrote:
Fit a transparent silicone rubber hose to this steam outlet, so
we can see the water overflow and remove all doubts.
He sort-of did this for Lewan's September demo. The white
section at the outlet has a transparent T-connection. (Video
4:22). Lewan said measuring the overflow at the T-trap gave the
same results as disconnecting the hose entirely. I don't know why
Lewan didn't measure the overflow at regular intervals.
The overflow was obviously much larger than expected. It looked
like the T-trap would fill in seconds. It looked like it was a
closed end T. If it were an open end T then the steam would pour
out as well.
So .. Rossi made it available, Lewan didn't use it. Who's to blame?
Lewan couldn't use it?
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
