RobertBryant Member
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Posts by RobertBryant

    To prove something extraordinary (let us call it LENR for lack of another explanation) you do not need the ability to replicate a working device. You need the ability for multiple parties to test (the same) working device.

    Which is the point of the R20 paper and clarifying sequelae by Rothwell.

    thanks Jed for keeping your eye on the ball..


    success can be expected when using many variations of his technique as long as the critical conditions were created

    Ed

    the variations .. will produce anything btw failure and success.. eg hydrogen... vs deuterium,, burnishing with metastables

    such as Ag107/Ag109/hafnium...varying the mesh.. wall distance


    and will guide improving the reactor.


    Your upcoming NAE paper may have a part in suggesting what modifications to try to to improve the reactor performance/durability


    I look forward to reading it. RB

    it is 0.21 W/m-K at 20°C

    Thanks for pointing this out.. Magic Sound

    I think the properties of deuterium

    at low pressures

    may become an engineering focus if R20 style reactor become popular.


    Deuterium appears to have the highest thermal conductivity of any gas

    Maybe H atoms/He-3 gas have higher?

    Is there some magnetic interaction??

    I might look into kinetic theory to see if 0.21 is explainable relative to H2 and He.


    Those 3 mg of deuterium seems to be working hard

    if they can conduct of the order of 90 watts.

    Truthfully, I read this forum now more interested in the psychology of the posters

    God Bless You ..both or one ..personae.. B2, and your beloved T2


    This is a technical forum, no religious topics and associated personal attacks allowed!

    It may be that both convection and conduction

    Hi Magic sound.

    The convection contribution is probably minor from my brief consideration of Rayleigh number based on recent arxiv paper by Yang et al


    https://www.google.com/url?sa=…Vaw2ktL0NGlyP1HVTluOyafNs

    Unfortunately the calculation of Rayleigh's number requires yet more deuterium known values

    kinematic viscosity and thermal diffusivity.

    I think the thermal expansion coefficient can be modelled as 1/T(K)

    I get a Rayleigh number of well below 100.. which means that conduction dominates over convection


    Conduction based on a simple annular model can be a major contributor to heat flow.


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    I get something like Power = 0.36 x (delta T) in watts assuming a rod radius of 2.7 mm and an inner reactor radius of 5.4 cm.

    Assuming the rod is 550 and reactor is 300C.. delta T= 250--> power = 90 watts.


    This compares with radiative transfer from a o.o1 m2 rod of 139W at emissivity 0.7

    and only 40 W at emissivity 0.2..


    The radiation contribution depends strongly on the emissivity of the rod.


    Does the deuterium atmosphere disturb the stainless steel surface greatly?

    Certainly the input power is not likely to have been directly measured

    Please say why this is certainly.. Is it 100% certainly or THH weaselword certainly?

    And what does likely mean

    Is it 60 % unlikely or 40% likely

    another assumption and another weasel modal term

    without any justification from debug THHnew???


    The debug quote is entirely relevant to this thread


    The 2017 thread shows obvious evidence of THHnews debug stance.

    In the end he gave up

    after trying many other ploys including asserting that 3 mg of deuterium of Combustion energy generated significant error in the results.

    and yet THHnew raised this same dead duck ""combüstion" canard ön this thread.


    So Mizuno has made a processing error but THHnew can't pinpoint


    Its somewhere somewhere somewhere and all because Mizuno changed the position of the

    heater in R20 without changing the calorimetry method.


    This is farfetched waving hands in the air from THHnew in a last ditch attempt to discredit the huge excess heat in R20

    or else reading RB, who has idee fixe

    e.g. miscalculating input power for the different heater by reusing an old V - P equation.

    Please elaborate .on the details of using a n old V-P equation


    Is this yet another one of those flimsy ill thought out idees of THHnew which he hasn't bothered to follow through?


    As I have said before the R19 and R20 calorimeter setup is the same

    and the processing is minimal of the data


    "Output power measured= m X Cp x delta T etc is the same


    Why would Mizuno change .?

    THHnew has failed to identify where a processing error happens. although he has handwaved"processing processing...



    It is THHnew with the idee fixe... the DEBUG mentality ..or there MUST be a MIZUNO MISTAKE .... this is on file since 2017.

    "THHuxleynew Member Likes Received3,590 #167

    Aug 31st 2017

    It is academic, because the IH replication failed. Still, I'd like to debug this. But not sure I have the motivation to spend long amts of time on it given the IH work.

    Well THHNew ,, I do have an idee fixe.. please supply EVIDENCE rather than rhetoric and ad hominem

    If THHnew postulates a mistake.. then THHnew needs to show EVIDENCE and in an intelligible fashion


    not handwaving rhetoric vague thinking ... wrong formulas poolrycontextualised equations... etc


    Mistakes, and bad ones, are often made, especially when somone desperately hopes for one outcome.


    and especially when one does not check one's results with a textbook ... like here..THHnew . using the wrong formula for post after post on this thread


    THHuxleynew wrote:

    That is because at the temperatures I did this calculation (380C reactor vs 80C wall) the re-radiation is\\

    less that 10% of the radiation due to the T^4 factor for relatively small gaps.

    RB: no bound

    Mizuno: no bound

    THH: some aspects bounded

    I just need your assumed data

    minus the assertions THHnew


    Then a numerical comparison of error =THHassumed expected minus THHassumed Mizuno can be made.


    The reason for this is that THHnew made many assertions about the foil relection until he did one clear calculation

    which showed that he was using the wrong formula for many posts

    Numbers minus THHnew words are the clearest indicator for me.

    Of course Thhnew may be correct..about the anemometry..

    but I just need to check...


    Basically THHnew indications and assertions are based on many assumptions.


    The most basic assumption was well detailed in 2017..


    There MUST been an error somewhere,


    The major error's that I have seen are in THHnew's calculations.

    '

    as in


    THHuxleynew wrote:

    That is because at the temperatures I did this calculation (380C reactor vs 80C wall) the re-radiation is\\

    less that 10% of the radiation due to the T^4 factor for relatively small gaps.

    Of course THHnew alleges that he forgot the correct formula..


    In view of this forgetfulness I will forget his assertions and assumptions


    although this critical stance might be useful

    in practice it is not

    because the THHNew critique is so garbled and unclear



    and now are asking different questions, about the R20


    I have asked those way back

    you never answered


    The topic is "Mizuno reports increased excess heat"


    Let me remind you of that


    Errors in the input?

    but in the input power calculation


    The processing changed where?


    Calculation Input = mx Cp x delta T.


    where cp? m? deltaT??


    Please be specific "The most likely error..


    Justify likely... is this just posturing... 90% likely 99% likely?

    just one of those THHnew vague mathematical terms??

    Mizuno in the paper calls this a sample, indicating that it is an initial indication rather than a considered set of experiments written up fully


    Another one of THHnew's many assumptions.

    why would Mizuno change his processing of data with the same calorimeter setup?

    Of course. In fact with claimed R20 levels of power you don't need a box.


    The R20 results in the paper comprise one sample datapoint, and anecdotal accounts. Ignoring the anecdotal evidence, the one datapoint needs to be validated,

    now THHnew said that the R20 results were based on one single point


    This is patently untrue.


    The spreadsheets for these results contain hundreds of data points.


    THHnew alleges a processing error


    but cannot identify where it might be.


    Is it in the anemometer the thermistor or in the calculation..


    why would Mizuno suddenly change his processing for R20


    Its the same calorimeter setup.


    clacualtion Output = mx Cp x delta T


    where is the error


    Pin point it please


    No vague handwaving.. some other error...etc

    Engineers are very familiar with the importance of error bounds, as are scientists. Everyone sometimes ignores them, but you do so at your peril


    Could THHnew following his exhaustive analysis of this matter and his assertions of 24% -64% error in the anemometer readings

    show exactly what his assertions are based on by filling in the following datasheet.


    The above is certainly a useful calculation for the R20 cal versus active results. As you know, because I've repeated it many times, the work on airflow is specifically relevant to the R19 data, so you are off topic.


    No I am not off topic.


    Where are the sudden changes in Mizuno processing that explain the R20 COP?


    you state there are errors in processing of the hundreds of data in the R20 spreadsheet.


    Output = m x Cp x 12



    Input= m x Cp x 3


    In m ... cp or delta T??


    This is just handwaving by THHnew ... processing processing processing.


    " Or some otehr such error" " Or some otehr such error Or some otehr such error

    In the case of Mizuno's observations it is pretty clear that the absolute calculations are not accurate to anything like the 10% level needed to make 5W significant with 50W in.

    No its not..

    not clear at all.




    you have not substantiated that THHnew.... assumptions on assumptions



    In addition we are talking about 300%


    THHnew has failed to establish any error of 300% except by handwaving,,,, wrong processing


    but cannot identifiy where.... just processing processing processing assumption assumption assumption

    Re #1,317. See #1,316 for answers


    There are no answers to these questions


    So what formula have you used?

    What velocity profile have you used.


    at r=0 cm r= 1cm, 2cm 3 cm?


    What is the accuracy of this profile 5%,10% 15% ...do you know?


    Wrong assumption. "which assumes that velocity is flat across the pipe,"


    Where does it state this in the paper??


    Normally when one takes a velocity traverse the different circles/annuli relevant to the of the measured are taken into account.


    You are assuming horseshit.


    Do you assume Mizuno knows less fluid mechanics than you know?\