On Oct 12, 2011, at 5:59 AM, Jed Rothwell wrote:
The answer is been staring at us the whole time. I have been
thinking of the Rossi reactor as something like a US water heater
where inflow must always equal outflow, because a reservoir is
always full. I have been thinking that if the inflow is a steady
0.9 mL/s, the outflow has to be the same. But there is a reservoir
that can hold different amounts, unlike a water heater.
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. 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."
Lewan measured the outflow at 18:57. It was 0.91 g/s. That
indicates output power of around 2 kW. Looking at the "power in the
vs power out" graph, at 18:57 indicated power was 2.5 kW. Close
enough!
http://a2.sphotos.ak.fbcdn.net/hphotos-ak-
ash4/304196_10150844451570375_818270374_20774905_1010742682_n.jpg
Earlier, at 16:51, indicated power was 8 kW.
I show a Pout of 8.073 kW in the spread sheet without correcting bias:
http://www.mtaonline.net/%7Ehheffner/Rossi6Oct2011.pdf
but 8.673 with correcting delta T bias. Here is my graph with bias.
http://www.mtaonline.net/%7Ehheffner/RossiT2Pout.png
Perhaps I should just do away with the bias correction.
If Lewan had measured the outflow at that time he would have found
it much faster, 3.5 g/s. We have no idea what average inflow was
during this test. It was probably steady the whole time. Probably,
at 16:51 when the power was high, the water level in the reservoir
was falling, and at 18:54 the water level was rising.
- Jed
It may be that at 16:51 a slug of hot water was affecting the Pout
thermocouple, and it 18:54 not so much.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
