Perhaps RF is not causing any problems with the current experiments. Even people who have little experience with RF interference should notice whether or not meters change readings with people moving around them or especially when they are touched. Maybe after our discussion the experimenters will mention that some unusual electronic behavior is seen that does not make sense to them. At that time some of us that have solved this type of issue can help them to eliminate the assumed RF interference.
Also, if there is significant RF emission from these devices the FCC(Federal Communications Commission) will regulate them to prevent interference to normal radio operation. If emission of RF is a real concern then it will be better to consider how to mitigate that problem sooner rather than later. Unfortunately, the current structures which are similar to the HotCat system appear to be wide open and lack significant shielding. Dave -----Original Message----- From: Axil Axil <[email protected]> To: vortex-l <[email protected]> Sent: Wed, Apr 15, 2015 3:29 pm Subject: Re: [Vo]:Path to Prove LENR at Hand The is all very good in principal but such RF mitigation measures are not being done in current LENR experimentation. On Wed, Apr 15, 2015 at 3:20 PM, David Roberson <[email protected]> wrote: It should be possible to filter out any RF that finds its way toward the electronics. I have used "hand waving" before while monitoring readings to detect RF interference. Typically RF levels vary greatly as the path changes making its interference to equipment easy to spot. Dave -----Original Message----- From: Axil Axil < [email protected]> To: vortex-l < [email protected]> Sent: Wed, Apr 15, 2015 2:11 pm Subject: Re: [Vo]:Path to Prove LENR at Hand Many experimenters are reporting RF as output of there experiments. Could this RF interfere with proper reactor control? On Wed, Apr 15, 2015 at 1:20 PM, David Roberson <[email protected]> wrote: We are very near to the goal of proving that excess power is being generated within a HotCat replica, especially with the latest measurements performed by Brian Albiston on 4/12/2015. Of course the fine work by Dr. Parkhomov and others has effectively lead the way forward. Now it is up to us to complete the task by closing the few remaining loop holes which obscure the proof. A couple of weeks ago I offered the theory that the outside surface of a Parkhomov like reactor should actually become cooler when a PID controller is used to regulate the internal core temperature of a system that begins generating excess power. This seemed contrary to the beliefs of many but was shown to be true by Brian's demonstration. The feedback causes this to occur since the sense thermocouple is effected more by the core power than the power due to the electrical heating source. It is possible to determine the core power generation as a function of core temperature by making certain measurements on a system that resembles Parkhomov's, but is controlled by a PID controller. It is important to maintain the core sample inside the main device outer cylinder if we are to achieve results that are representative of the true power being generated by the core. This is needed to ensure that all the heat power generated within the core flows through the heating element on its path toward the outer device surface. This requirement effectively eliminates the extended core networks that have become popular recently with attempts to measure the gas pressures and avoid the difficulties associated with the high temperature seals. There are other reasons why the core should be completely contained within the main cylinder that are less obvious and need to be discussed at another time. Also, the thermocouple that senses the core temperature will make the measurement more accurate and robust if placed inside the core instead of on its outer surface. I am confident that these issues will continue to be discussed until an adequate resolution is achieved. First, at least one thermocouple should be attached to the outside surface of the main largest cylinder that is the radiating and convecting surface. Another thermocouple should be located within the active core itself which generates a temperature reading that is fed to the PID control system. The PID needs to be adjusted so that the integrator portion truly monitors the average temperature reading of the thermocouple allowing the feedback to keep it constant. It would likely be best to use a DC supply and drive source for the resistive heating coil in order to eliminate most of the noise that corrupts the accuracy of the temperature readings. If we determine that a complex waveform is required due to magnetic effects then we can go back to the more noisy alternative. Calibration of the radiating surface temperature by the first thermocouple is important in order to obtain the correct value of total power that is exiting the system. The PID controller can be used to keep the input drive power constant at stepped values for temperature readings of the outer surface. A dummy system will need to be tested to ensure that core power does not corrupt the calibration process at the higher power levels at the expense of accuracy. I assume that the dummy can be made with behavior that is representative of the real device. The graph of DC input power as a function of outside surface temperature is identical to the output power function when there is zero core contribution. After calibration is completed we will accurately know how much power is exiting the system for any surface temperature reading that is performed. We can also accurately measure the input power that is being fed to the heating coils by the PID control system at any level of input required to maintain the core temperature at a desired set level. To obtain the core power generation level we subtract the measured input DC power from the calibrated output power due to the surface temperature of the device. This process can be repeated throughout the desired core temperature operating region by adjusting the PID set point so that a complete function is generated. There is at least one issue that concerns me regarding the thermocouple that is placed within the core. It is subject to possible corrosion due to the active core material and may need to be protected from that environment. The temperature readings made by this device are used to stabilize the system by means of the PID controller and the accuracy of the engineering data obtained may be compromised unless proper precautions are taken. This concern will be addressed during future testing. I am 99.9% confident that the latest experiment conducted by Brian indicates that power is being generated by the core of his device. My main concern is that it is of a chemical nature since it was generated for less than one day of operation. I can imagine that some thermite effect might be present since liquid aluminum is released by the hydride and oxygen is surely present and some is likely attached to the nickel. A slow reaction of this type might be causing the power generation that is being observed. Also, there may well be other chemical processes that remain obscure at this point. We must maintain core power generation for a much longer period of time before it is safe to attribute that power to nuclear effects. The good news is that power is being generated within the core. Dave
