I wrote:
You say there was [a 0.1°C bias] between the inlet and outlet
thermocouples. That is also a disgrace. It is ridiculous. Such things
are easily corrected, and should be corrected before the test begins.
[Dedicated, computer-based instruments should have a smaller bias than
that. Handheld instruments usually show only 0.1°C increments. They
may vary by 0.1 or 0.2°C.]
Oops. Excuse me. He said 0.5°C. Quote:
"It should also be noted that after half an hour of water flow, before
starting any heating, the temperature at the inlet and the outlet of the
heat exchanger still showed a difference of 0.5 degrees centigrade, the
outlet water being cooler than the inlet water (at that time, the
primary circuit was still empty as the E-cat was still filling up)"
I assume this is an instrument bias. The device cannot act as a
refrigerator cooling the water down as it passes through. but perhaps
the water sat in there for a long time and ambient was less than tap
water, and it cooled down. Or the inside of the machine was cold.
I don't know what to make of it, but this kind of problem should be
addressed before you begin the test for crying out loud. You have to do
a calibration. You have to flow water through the thing and prove that
the two thermocouples are less than 0.1°C apart.
- Jed
