MIZUNO REPLICATION AND MATERIALS ONLY
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Try this on for size...
Show calculation of net heat output of reactor ....for size
for the entire profile..
3 MJ is based on cp x delta T x mass flowrate x time.
This calculation ignores heat loss by radiation.. it is only sensible heat in the air..
so the net heat output of the reactor
is indeed higher
Perhaps the conjecture " the calorimeter is the source of excess heat?" is indeed perhaps
the reactor is the source of at least 3MJ..
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I’ll think about that if you explain why it takes 4 times longer to reach a steady state only 2.5 C higher, and the calibration is substantially hotter at the same input power on the way up to 28 C.
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Heater power is not shown, only described as "120 Watts". If we assume that the heater power is continuous over the rising part of the curve, the system clearly had not reached equilibrium after about six hours.
There is substantial mass in the Mizuno R19 reactor. The low thermal conductivity of 30X Stainless Steel and its specific heat of 0.5 kJ/kg-K mean that it will take a long time for thermal energy to migrate into the massive but remote end structures of both the cruciform and cylindrical cells. In my 1/3 scale system, it takes 3-4 hours for the temperature to stabilize at an equivalent power (40 watts).
Is the calibration data in the BCD60520 document for the R19 reactor? If so the external heater coil would heat the airflow passing over it much faster than it would the steel reactor body. So we would see a very fast initial increase (the rise time of the heater coil sheath), followed by a slow curve (five hours and still rising) as the reactor heats up. Only after the reactor body is at equilibrium will the airtemp Δ be valid for power calibration.
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I’ll think about that if you explain
Think ..then answer
then write if.. no deal.
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it takes 3-4 hours for the temperature to stabilize at an equivalent power (40 watts).
I think this was written once upon a time on a 2017 thread..
(Without activated mesh) the inactive reactor takes about 2500 seconds to reach equlilbrium..
The vertical axis is delta T..in C
To find out the reactor mass you might need to check with JR..
but I think it would be greater than 20 kg..
these are the calculations for the inactive and active reactor..
The radiation/ convective losses are estimated at 0.8 and 0.66 MJ
120Winput
Electric Energy In
CapacitiveSensibleHeat LossEnvironmental HL
Total Heat Loss
Excess Heat
COP
MJ
MJ
MJ
MJ
MJ
Active Reactor
2.48
3.09
0.8
3.89
1.41
1.57
Inactive Reactor
3.24
2.55
0.66
3.21
-0.03
0.99
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LOL
I have a shop vac hose going from the outlet to mixIng with the inlet going on right now.
200 W input as usual. -
Open glowing resistor capable of about 1350 W but just run at 200 W, that is.
Still takes about 3.5 hrs to stabilize the calorimeter.
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Still takes about 3.5 hrs to stabilize the calorimeter.
Heat dynamics in calorimeters vary...length width height
fluid flow patterns.. material.
similarly for reactors..
so that results cannot be easily transferred
from one setup to the other..
Calorimeters are a significant work in progress..months or years..
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Heat dynamics in calorimeters vary...length width height
fluid flow patterns.. material.
similarly for reactors..
so that results cannot be easily transferred
from one setup to the other..
Calorimeters are a significant work in progress..months or years..
Indeed. I could (and eventually will) speed mine up by ditching the acrylic box and using foam board instead.
But I built mine to be very similar to Mizuno’s box so that it could be comparable. I guess I need 50 kg of stainless steel as a dummy heat load...
Returning hot air from the outlet back into the inlet last night was a little strange.
The unexpected occurred and needs more research. -
I’ll think about that if you explain why it takes 4 times longer to reach a steady state only 2.5 C higher, and the calibration is substantially hotter at the same input power on the way up to 28 C.
The jpeg below provides a plausible answer to your question and a possible simple explanation for the excess heat claimed for the Mizuno's experiments held in 2016.
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Yes I forgot that there were once very heavy cross reactors, sometimes two of them, in the box.
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Off topic,, not replication
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I guess I need 50 kg of stainless steel as a dummy heat load...
P noia can try 100 kg.0r 1000kg when he replicates the reactor
but the
The R20 reactor was not 50 kg.. please read.
http://lenr-canr.org/acrobat/MizunoTexcessheata.pdf
It was much less than 50 kg..
It has 3mg of deuterium.. 50 mg of palladium on ~15 g of nickel mesh
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P noia can try 100 kg.0r 1000kg when he replicates the reactor
but the
The R20 reactor was not 50 kg.. please read.
http://lenr-canr.org/acrobat/MizunoTexcessheata.pdf
It was much less than 50 kg..
It has 3mg of deuterium.. 50 mg of palladium on ~15 g of nickel mesh
Well bring yours over, and I’ll run it at 200 W and tell if you if it works or not.
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I guess I need 50 kg of stainless steel as a dummy heat load...
Well bring yours over, and I’ll run it at 200 W and tell if you if it works or not.
Its your replication P noia.. I don't want to steal the limelight..
if you post on this thread I will always be intensey interested in what you say
whether it is closet secret or 50kg,,
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As to the secret calibration constant P Noia..
I am intensely interested in whether the ~25% figure for the accounting of the environmental( convective/radiation losses) heat loss
which is not accounted for by the sensible heat is a reasonable estimate..
If you can't follow the reasoning behind this ~25% there are simple models of radiative and convective losses
from the warm 2 sq. m surface of the calorimeter that are helpful
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The R20 reactor was not 50 kg
From the published images it looks like the "cruciform" reactor was built with standard Conflat components. The assembly used four solid end caps and four bored caps on thee tube ends. The solid end pieces in the size for 100 mm tubing weigh 2.11 kg each, and the bored ones about half that. So the end fittings alone weighed over 12 kg. For a cylindrical reactor of the same diameter, the ends weigh around 6.4 kg or 14 lbs. The 10 X 60 X 0.2 cm tube itself weighs around 3 kg, so the mass of the reactor was probably 10 kg (22 lbs) or more, once the meshes, heater and 24 bolts and other hardware were installed.
For the cruciform reactor, depending on the thickness of the cross tube it could be 20 kg or so, but definitely not 50!
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The paper linked by Robert above has the weights in the first sentence of Section 1, 1.1, page 1.
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For reference, last July LDS Vacuum quoted $417 for a cylindrical conflat reactor in the R20 size (CF 600).
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