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ICCF18; Jul. 21-26, 2013
A Mass-Flow-Calorimetry System for
Scaled-up Experiments on Anomalous Heat
Evolution at Elevated TemperaturesA. Kitamura*1,2, A. Takahashi1,3, R. Seto1, Y. Fujita1,
A. Taniike2, Y. Furuyama2
1 Technova Inc., Tokyo 1000011, Japan
2 Graduate School of Maritime Sciences, Kobe University,Kobe 6580022, Japan,
3 Osaka University, Suita 5650871, Japan
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A. Takahashis poster summarizes in this Conference a lot of
interesting, even astonishing, features during the D(H)-
loading into the nanocomposite samples to speculate heatreleasing mechanisms.
burst-like heat release with anomalously high values of
differential heat of sorption, 600 eV/atom-H,
large values of integrated heat reaching ca. 800 eV/atom-Nifrom a CNZ sample absorbing H,
abrupt desorption with 50 - 80 eV/atom-Ni absorbed almost
exclusively in the first 573-K run for each sample.
To confirm the interesting phenomena with improved signal-
to-noise ratio, we have fabricated a reaction chamber with a
ten-times-larger volume with a mass flow calorimetry using
an oil coolant.
Aim and method 2
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New scaled-up absorption system with oil-mass-flow calorimetry 3
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Electrical and
thermal
feed-throughs
Upper radiation
shield
Sheaths of RTDs
Reaction
chamber
Top f lange for
outer chamber
Reaction chamber of the C1 system 4
Coolant pipe
Technova 6201-R-025
Tentative
supporter for
maintenance
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Vacuum
gauge
Pressure gauge
C1
chamber
Constanttemp.
water bath
Room temp. is
controlled to
22-270.1C
-ray counter
Neutron
counter
C1 system for upgraded absorption experiments 5
SuperNeedle
Technova 6201-R-025
BT400 Coolant pipe
Going in and out to a
chiller
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C1 chamber
Constanttemp.
water bath
Room temp. is
controlled to
22-270.1C
-ray counter
Neutron
counter
C1 system for upgraded absorption experiments 6
NI Measurement
and Automation
Explorer system
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Squeezing rotors
C1 system for upgraded absorption experiments 7
Constant-flow-
rate pump
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Heat transfer medium; BarrelTherm 400 (Matsumura Oil Co., Ltd.) 8
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Calibration using H-filled Al2O3 powder serves as a control run. 9
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Calibration / control run using Al2O3 powder 10
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Calibration / control run using Al2O3 powder 11
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Calibration / control run using Al2O3 powder 12
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Calibration of heat conversion factor (W/T),time constant (), and heat recovery rate for H2-Al2O3 powder
13
Technova 6201-R-025
Wh
(W)
Wh(W)
F
(ccm)
T(C)
W/T(W/deg.C)
(min)
Tav
(deg. C)
(kg/m3)(=6.93e-1*T
+1.06e3)
C (J/gK)(=3.4e-3*T
+1.50)
heatrecovery
rate
195 195 20 2.20E+02 8.87E-01 28.4heating
phase1.38E+02 1.16E+03 1.97E+00 8.55E-01
124 -71 20 -7.02E+01 1.01E+00 30.8cooling
phase2.12E+02 1.21E+03 2.22E+00 8.84E-01
231 107 20 1.04E+02 1.02E+00 30.2
heating
phase 2.30E+02 1.22E+03 2.28E+00 9.07E-01average 9.74E-01 2.98E+01 8.82E-01
st.dev. 7.57E-02 1.24E+00 2.61E-02
TC2
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Results of calibration using Al2O3 powder 14
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i i i i i i C S/A O
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Preliminary runs using silica-included CNS/Al2O3 sample 15
Technova 6201-R-025
Molar ratio
Supplier
System
Pd (Cu) Ni Zr Si(Al) O Reference
Silica-includedPd; PSII
0.054 (2-10nm) --- --- 0.946 1.95 AdmatechsCo. Ltd. A1A2[5],[6],[7]
Silica-included
PdNi; PNS0.011 0.062 --- 0.927 1.92 Admatechs
Co. Ltd.
A1A2
[6],[7]
Silica-includedCuNi; CNS (Cu)0.0071 0.030 --- 0.321 0.64 AdmatechsCo. Ltd.
C1Presentwork
(Filler) Al2O3
(60m) --- --- ---(Al)
0.9961.5 Showa
Denko K.K.
C1As a filler
and forcalibration
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P li i H i CNS/Al O d
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Preliminary H-run using CNS/Al2O3 powder 16
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P li i H i CNS/Al O d
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Preliminary H-run using CNS/Al2O3 powder 17
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P li i i CNS/Al O d
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Preliminary runs using CNS/Al2O3 powder 18
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P li i i CNS/Al O d 19
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Preliminary runs using CNS/Al2O3 powder 19
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P li i i CNS/Al O d 20
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Preliminary runs using CNS/Al2O3 powder 20
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P li i i CNS/Al O d 21
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Preliminary runs using CNS/Al2O3 powder 21
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P li i i CNS/Al O d 22
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Preliminary runs using CNS/Al2O3 powder 22
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Preliminary runs using CNS/Al O powder 23
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Preliminary runs using CNS/Al2O3 powder 23
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Conclusion 24
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Conclusion 24
Technova 6201-R-025
Calibration of the oil-mass-flow calorimetryusing a dummy Al
2O
3powder:
The coolant oil reached almost 300 deg. C at
heater input of 231W.
Long-term stability, or fluctuation in terms ofstandard deviation, is better than 0.5 deg. C.
Conversion factor, dW/dT= (0.970.08) W/degwith an oil-flow rate of 20 cc/min.
Heat recovery efficiency is (0.880.03) with heatremoval time constant of(301.2) min.
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Conclusion 25
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Conclusion 25
Technova 6201-R-025
The first trial run with a 50g CNS sample (silica-included CuNi nano-compound containing 4g ofNi) mixed with 200g Al2O3:
Both TC2 at the oil outlet and RTD's inside thereaction chamber show higher temperatures
than for the blank sample, which implies a long-lasting excess power of20 W (i.e., 5 W/g-Ni). The assumed excess heat appears to be on the
same order as that of the CNZ (CuNi/Zi2O3)sample yielding 2 W/g-Ni excess power [5,6,7].
Further measurements with more precisecomparison are necessary to confirm the excess.
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Technova 6201-R-025ICCF13; Jul 21-26 2013
Thank you for
your attention.
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