On Sep 15, 2011, at 12:44 PM, Jed Rothwell wrote:

I wrote:

The thing cools down slowly after the pump is turned off at 23:10. assuming the reaction is fully quenched at that time . . .

That may be a rash assumption. It is sometimes hard to quench a cold fusion reaction.

I don't see the temperature going up anywhere after 23:10, so I guess the reaction is fully off.

The temperature does go up during the heat after death event, which is impossible without a source of energy in a system where the insulation, flow, and other heat losses remain constant. It goes from 133.0°C soon after the power cut-off (22:35) up to 133.7°C for a while at 22:42.

A 0.7°C temperature rise is significant with any thermocouple. That can't be noise. There is no question there must be a heat source in the cell.

Yes - it is the 80 kg of cell metal which has stored heat.

What Catania calls "thermal inertia" can only release heat at a declining rate.

This is not true. There can be a slow transmission rate in the flow of heat pulses through matter.

It can never increase the temperature above where it reached when there was power going into the cell.

Again not true.

In a pot of hot water after you turn off the flame, you may see a momentary increase in temperature because the water temperature is not uniform and a stream of hot water may hit the probe. Once things settle down and water stops moving much, the temperature falls monotonically. Rapidly at first, then more slowly. See Newton's Law of Cooling: "the rate of change of the temperature of an object is proportional to the difference between its own temperature and the ambient temperature (i.e. the temperature of its surroundings)."

Again a false analogy. The walls of the pot are thin. It only takes seconds or fractions of a second for a uniform thermal gradient in the pan walls to form and a small delta T between the inside and outside of the pan walls to develop.,

In this dataset, after the heater power is cut off, during heat after death, the cell seems to want to stay at the same temperature.

Yes, the majority of the heat is located a meaningful distance from, and through a (comparatively) large thermal resistance to, the thermometer and the water.

That may sound weird but it has often been observed in cold fusion cells. It was first reported by Stanley Pons, who called it a "memory." Ed Storms described trying to quench a reaction that kept going back to the same temperature. Many physical systems exhibit this kind of behavior in various ways, such as a modern plastic toothpaste tube. You fold it over and it unfolds. It goes back to where it was. I myself preferred the old-fashioned ones which stayed folded.

By the way, the link to this data is available in the article:


Look on the right column, where it says

"Ladda ner

Report E-cat test September 7 (pdf)
Temperature data Sept 7 (xls)"

- Jed

Best regards,

Horace Heffner

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