Does he place the mesh on a hard surface when he is doing the rubbing? This may be a dumb question, but this isn't specified.
Mizuno reports increased excess heat
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Jed,
I lost my password and I just managed to get back on the forum today. But you're hostility makes me want to leave. If you think that I went over the line, that's fine. I don't mind you telling me that. But the whole attitude you project when you assert that I should send 20,000 dollars is uncalled for. I wasn't even suggesting he use an SEM or an extremely expensive piece of equipment. Bob Greenyer of the MFMP makes use of a USB microscope that costs a couple hundred dollars and discovers fascinating anomalies and track marks of strange radiation. If Mizuno was in need of one, I'm sure that this forum could collective scrounge up the cash. I totally understand that you are frustrated about the fact he has made such an amazing discovery but is working by himself (no help other than yourself remotely), in a structurally damaged and potentially unsafe building, and without the funding needed to not only buy optimal equipment but to even have some air conditioning. But please realize we would all like for this to be replicated far and wide.
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But you're hostility makes me want to leave
I think its burnishing rather than hostility.
You might look into burnishing
its a hand gilding technique from ages past... even older than gilding with gold leaf.
my view is that the Pd on Ni rubbing is in fact also work hardening...
not just leaving a thin layer of Pd
so Director.. if you are going to replicate
please be tough,.. burnish that Nickel.. hard
just as Jed has burnished you
And may God bless your burnishing.
https://en.wikipedia.org/wiki/Burnishing_(metal)"
The plastic deformation associated with burnishing will harden the surface and generate compressive residual stresses.
Although these properties are usually advantageous, excessive burnishing leads to sub-surface cracks which cause spalling,
a phenomenon where the upper layer of a surface flakes off of the bulk material
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That's not a dumb question. It is the sort of question I have badgering him with for years. Except, in Japanese. I think the answer is he does it on a table. There are not many free spaces in the lab. The tables are none too clean, but I expect he cleans off the surface as best he can. He has some sort of paper towels that he lays out on the table before working with cells. It is a blue box of laboratory grade towels that I have seen in U.S. labs as well. I don't recall the name. Some kind of sterile, high tech stuff that does not produce lint, similar to what the nurse puts under you before they do minor surgery.
As I said, it is important to wear gloves. Lab supply houses sell them. I prefer the plastic kind. Do not get oil from your skin on any cold fusion reactant or reactor! Or dandruff. Or organic anything. It is death to the experiment. I'd go with a face mask.
Thank you very much for the answer! Perhaps he uses a lint free type of paper towel similar to the ones offered on the following website.
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If rubbing technique is as simple as Japanese knife sharpening we have a problem here.
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is as simple as Japanese knife sharpening
its different from sharpening
the rubbing is in fact burnishing
burnishing causes workhardening - sharpening does not
no water, no oil, lint and dandruff free.
no need of white socks
I think Celani may have similar precautions when
twisting his wires
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Working to estimate some component sizes.
300mm 500 watt sheath heater?
Found 150mm 300 watt heater: https://www.alliedelec.com/product/rs-pro/8606899/70729044/
Source of every component useful to know.
I suspect TM's lab notebooks have this information. Any chance he has showed them to you?
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Emailed Dr. Mizuno.
Researchgate.net papers incomplete.
Time in Hokkaido is 10:19am.
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What is the estimated temperature reached at the surface of the heating element at maximum power?
(I'm only wondering if it could be working as a hot cathode)
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Emailed Dr. Mizuno.
there are lots on lenrcanr
these are the latest.
his library marches to a different drumbeat
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Ok, so as my swansong here before a bit of a break I'll just pursue this a bit.
(1) The Reynolds number calculation is definite.
(2) The fact that average speed < max speed is definite, and the difference is of order of 20% for turbulent flow, and 50% for laminar flow. Specifically:
The velocity profile for laminar flow is the well-known parabolic form
u(r)/umax=2(1-r^2/R^2)
The resulting average velocity is one half of the maximum velocity
uav/umax=0.5
For turbulent pipe flow among the numerous empirical velocity profiles, the simplest and the best known is the power-law velocity profile expressed as
u(r)/umax=(1-r/R)^1/n
where R is the pipe radius and n is a parameter (exponent) which depends of the Reynolds number i.e. n=n(Re).
An empirical approximation of this dependence can be expressed as
n(Re)=c·ln(Re)
where c=0.62 for Re≤2·Re^5 and c=0.65 for Re>2·Re^5
Based on this approach on obtained the following relationship between the average velocity and maximum velocity for turbulent flow
uav/umax=2n^2/(n+1)(2n+1)
It is to mention that
-the value n=7 is applicable to a wide range of pipe flows and is the one commonly used resulting uav/umax=0,817
For a better reference: http://www.itcmp.pwr.wroc.pl/~…bulent_flow_Modelling.pdf
Section 2.1
From which we get the empirical value of n = 5.3 (Re=10,000) and uAv/uMax = 0.77 for Re=10,000.
Alternate approximation (for Re = 10,000), using f = (100Re)^-0.25
Umax ≈ V(1+1.33 sqrt(f)) = V*(1 + 1.33/sqrt((100Re)^0.25)
V = (1/(1+UMax * 0.81
So we get a average mean velocity (and hence power) is 81% or 77% (depending on which approximation is used) of the measured centre of pipe mean velocity
For lower Re (and we can go down to 6800 at 2m/s, or lower at high temperatures, this number will be smaller.
T density dynamic viscosity change in Re ~ rho / mu 25 1.18 18.37 1 100 0.947 21.7 0.68
The temperature correction for 100C relative to 25C decreases Re to 68% of its previous value. The change in V relative to UMax from this comes from:Re' = 0.68 Re
f' = 1.10f
V'= 0.99V
OK this correction is very small due to the relative insensitivity of average velocity on Re.
So, given this, and given that Re ranges from 4000 - 12,000 (worst case) unless air temp is very high, the correction factor here does not change more than 2% over the range as long as air velocity > 2 m/s, T < 100C.
I think my previous post using the f calculation was not quite right, as I said then, but these calculations are now all consistent and show the effect (significant) and its dependence on T an V (not significant).
If as Jed says he has accurate data showing that V/UMax ~ 100% here then we have an inconsistency. But the overall heat loss calculation in this system is more complex than the relatively well known difference between centre mean and average mean velocity on pipe turbulent flow.
Working out flowrate from smoke travel speed will not be accurate because again flow rate through a duct will vary across the duct, and only the true average will be correct.
I'm still not considering the R20 results until that sample result is replaced by comprehensive testing. If the sample data is correct then R20 will unlock $100M + from IH etc etc, and careful testing becomes irrelevant.
THH
THH, I appreciate your critical review of the experimental data which is all good but I am a bit baffled by real scientists with their much ado about nothing when the entire issue of air mass flow can be solved with a $20 engine part which measures mass flow of air with less than 2% uncertainty. The engineers that designed the mass flow meter can deal with Reynold's numbers and laminar flow issues, while all we need is the pulse output proportional to the flow. Also triple point calibrated NTC thermistors can measure temperature with 10mK accuracy so that should remove all reasonable uncertainty about the results here.
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About replicating Mizuno, is it a good strategy to ask Mizuno to manufacture himself (why not to subsidize him, ask him sample for money) some NiPd foam, with his tools and products, and test them is a compatible reactor with a matching calorimeter (very similar as explained in the paper, to have the same temperature/pressure/dissipation behavior) ?
I'm not in research, but quite often in bug-research. The first step is to reproduce the anomaly with maybe absurdly similar conditions (not easy, sometime the key conditions are hard to guess because they often assume a bug theory that if you know it would lead to an "Eureka I'm so stupid moment", and a 5 minutes correction).
You try hard to reproduce even the most stupid condition, until it works at least a little.
Then only you change one parameter at a time, first the "not important" one (that often are very important in fact, or else you would have understood the problem since long). And when it works, you can add instrumentation, hoping you don't break the replication with the probes.
I imagine it looks funny for you, but when you have "voodoo bugs", you have to be really scientific... it is more biology than computer science.
It seems that here, with Ecalox, Cydonia, but also out in Google, IH, there are people with good calorimeters, good cells, thay may try to reproduce Mizuno with his sample?
Is there risk to break the replication with transportation.
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I think Celani may have similar precautions when
twisting his wires
Not quite - as I understand it Francesco CELANI uses Teflon coated wire to make his Capuchin knots, and then heats the wire ( by passing current through it) to burn off the Teflon leaving the turns spaced but very close.
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About the preprint, there is an interesting par about testing at 3kW, above the calorimeter 1kW capacity.
What I see interesting despite the weakness of that "home heater calorimetry" method is that it can detect huge mistakes in the calorimetry... I remember of the Doral or Lugano questions, that may have been easily fixed with plain eye or short sleeves calorimetry.
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as I understand it Francesco CELANI uses Teflon coated wire
Thanks Alan I didn't know about the PTFE .. His alloy Cu55Ni44Mn1 appears to be supplemented at the knots with trace additions of Fe,Sr, K and Mn.
The minor elements appear to support the excess heat production.
The presence of other elements apart from Nickel in Ni200 may also be necessary.
So not just any nickel should be used,
And in saying that not just any manufacturer.
I guess 99.95% pure Pd, rather than any Pd also
I wonder what a 25 gram rod of Pd...costs nowadays ?
$1000, $1500.?
ask Mizuno to manufacture himself (why not to subsidize him, ask him sample for money) some NiPd foam
If I was going to spend $10,000 or more on the experiment replication setup I'd try to control as many variables as possible
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https://www.kwipped.com/rfqs/24436
Investigating pump rental.
$170 for one month. $295 for two months. $500 to buy.
