On Oct 12, 2011, at 6:46 AM, Jed Rothwell wrote:
Horace Heffner wrote:
This is what I was talking about when I wrote: "The earlier noted
flow measurement of 0.9 g/s, by Lewan, was at the output of the
water/steam from the condenser heat exchanger. It might have had
nothing to do with with the actual pump rate. . . .
So you did say that! You are way ahead of me.
It only had to do with the volume of steam being output, which is
independent of the volume of water being pumped in - unless
overflow is occurring, which seems unlikely at the early stage."
I don't get what you have in mind about overflowing, and the "slug
of hot water" idea. Total enthalpy would be the same whether it
overflows or not, wouldn't it? I don't see how it would affect the
outlet thermocouple temperature. As I said, putting the
thermocouple on the pipe which is a large heat sink will blur out
any fluctuations.
Perhaps I should just do away with the bias correction.
How much is your correction? You probably indicate it but I don't
see the number. Is at 0.5°C?
- Jed
The bias adjustment is 0.8 °C.
The relevant graph is here:
http://www.mtaonline.net/~hheffner/dTbias.png
The discussion in my paper is quoted here:
DISCUSSION OF GRAPH 4
Graph 4 shows Pout for the intial period before any steam came from
the E-cat. The red line in the graph shows about a negative 0.5 kW
Pout for no heat input. The blue line shows Pout after a 0.8°C
adjustment to Delta T. No negative power is produced. However, some
nonexistent positive power is produced. The net effect Ebias on
total energy out of the 0.8C bias over the 526 minutes of the test is
Ebias = (0.8K)*(178gm/s)*(4.2 J/(gm K))*(526 min)*(60 s/min) = 19
MJ = 5.3 kWh
Without the bias the COP for the test drops from 3.2 to 2.6.
http://www.mtaonline.net/~hheffner/dTbias.png
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
