Summary of Zhang Hang’s May 2016 LENR Experiment (Songsheng Jiang)

The following text and image was sent to me by Chinese LENR researcher Songsheng Jiang

Thank you for your message about the latest progress in Zhang Hang’s LENR experiment. Zhang Hang is an engineer, and now he is a LENR researcher in his own LENR laboratory in Xian.

Here is a further introduction of Zhang hang’s latest experiment report: (1) In this experiment he has improved the reaction vessel. The volume of reaction vessel is much smaller than the old one. The new vessel has outer diameter of 20 mm and length of 250 mm, and the old one was outer diameter of 60 mm and length of 150 mm. The small volume may reduce heat capacity of reaction vessel, and then may reach a rapidly temperature response with heat power. A rapid temperature change may be helpful to stimulate excess heat. (2) Infrared temperature sensor is used for temperature measurement of reaction vessel, instead of K-type thermocouple, which may be failure at high temperature over 1200 0C and in the hydrogen gas, the infrared temperature sensor was calibrated with K-type thermocouple in reactor vessel. The temperature measured with both techniques is agreed within 5 0C in 800-1300 0C. (3) The input power was regulated with a PID automatic temperature control. (4) The vibration power with PID control is used for heating reaction vessel (see in the additional figure), instead of regular power. The vibration power may be good to stimulate the excess heat production. (5) This experiment has a good repeatability for a long period, that can be seen from result of the first round (May 16-17, 2016) and second round (May 18-21, 2016). The excess heat was 190 W at 1252 0C in the first round and was 205 W at about 1200 0C in the second round. The excess heat was lasted for a long time.

Finally, an additional figure is given (see attachment), and more information has been shown in the figure.

First round-14-4

Link to full size image: http://www.e-catworld.com/wp-content/uploads/2016/05/First-round-14-4.bmp

  • Andreas Moraitis

    Didn’t me356 also use a controller that varies power in order to keep a preset temperature? This might make a crucial difference to MFMP’s method, which is based on fixed power steps. Fixed power will (after settling) also result in fixed temperature, but that’s only true as long as there is no exothermic reaction. In a fixed temperature/variable power system the power will be cut off when the reaction starts. Perhaps this is a prerequisite to maintain the process, for whatever reason.

    • Bob Greenyer

      Well – in a system with a long time constant which is not fully characterized and not in a stable thermal sink – it will appear that you are using less power as the bulk of the thermal mass reaches equilibrium with a variable power system – SKINR saw this problem in one of their experiments they ran in a fire brick cave. Also – it is harder to determine the cumulative power.

      • Andreas Moraitis

        BTW, Ed Storms appears to have changed his opinion about the importance of hydrogen concentration (loading ratio?) in electrolytic Pd-D systems in favour of temperature:

        “The most important variable, other than the NAE concentration, is temperature – NOT the deuterium concentration.”

        http://egooutpeters.blogspot.de/2016/05/may-25-2016-interview-with-lenrhunhu.html

        With regard to (dry Ni-H-) systems with preset temperature I agree that the probability to produce measurement/interpretation artifacts might be significantly higher.

        • Zephir

          I don’t think so – the temperature just affects the saturation of hydrogen at the palladium surface. The point is, the overpotential for hydrogen evolution depends rather steeply on temperature. The temperature of electrolytic Pd-D systems cannot be varied in a very broad range, after all. We shouldn’t mix the cause and consequences here.

    • Eyedoc

      Yes I agree, that may be important to check on . the LENR may be driven better in that way.

  • Bob Greenyer

    Q&A in new version

    https://goo.gl/UrD09C

    • Wishful Thinking Energy

      “The hydrogen generator was used to replace the air inside the container with hydrogen before the reaction was started, and then it was used to add hydrogen after vacuum pumping. During the experiment, the pressure was neither monitored nor controlled – the container valve was closed.”

      If true that is some wacky pressure behavior. Pressure stays nearly constant from 700 minutes on while temperature increases 300C. It’s unclear at what point they closed the valve and didn’t adjust it any more.

    • Bruce Williams

      This is one of the best pieces of work I have seen since I started following the LENR saga some years back. The author has done a really good job & thanks too , to Bob Higgins for his (quick!) translation.

  • Wishful Thinking Energy

    The pressure behavior is very interesting. It starts out at 150 kPa (1.5 bar) and, based on the vessel temperature, this would be post decomposition of the LiAlH4. The pressure rises quickly to ~520 kPa (5.2 bar). I assume pressure was added by the Hydrogen generator. The pressure then slowly drops to ~30 kPa over the course of about 10 hours. I’ve never seen a drop in pressure this large unless free Lithium is included in the reactor, but it does seem to be a common phenomena in successful replications. In this case some of the Hydrogen may be absorbed by the stainless container along with the Nickel powder.

    At 700 minutes they seem to add an additional 200 kPa of Hydrogen, but it doesn’t seem to have much of an effect on the reactor temperature or the presumed excess. From this point no further Hydrogen seems to be absorbed even though the reactor temperature hasn’t changed much. They must be holding the pressure constant externally since the pressure doesn’t increase with further temperature increases.

  • Wishful Thinking Energy

    Frank, is there any way you can make it so we can click on the figure to expand it? I assume the original is at a higher resolution.

    • Frank Acland

      I added a link above to the full size image.

      • Wishful Thinking Energy

        Thank you!

  • Gerard McEk

    It certainly looks interesting. I hope they also publish all the details so replication can be done. Using an IR instead of a TC and calibrated with a TC is recommendable. The excess power is determined by subtracting the power needed with no fuel to the run with fuel. I would recommend to use instead of ‘no fuel’ a tube loaded with just nickel powder, just to avoid differences due to mass, reflexion, and whatever this type of excess power determination may be criticized for. After all, the assumed excess power is not so high in relation to the applied power, so small differences between the reference and fueled tests may lead to wrong conclusions.