Study on Calorimetry of Excess Heat in a d/Pd Gas-Loading System

Abstract:

A heat-flow calorimeter was introduced into the D/Pd gas-loading system to confirm the reliability and accuracy of the results obtained by isothermal calorimetry in the previous work. The effects of input power (electrical current) and pressure on excess heat were discussed under different experimental conditions. The results showed that the heat-flow calorimetry had higher accuracy than isothermal calorimetry. Under deuterium pressure of 30 kPa, the excess heat power decreased with the decrease of the input power, and the maximum excess heat power was (6.40 ± 0.19) W with an input power of 380 W. In the experiments of discussing the relationship between pressure and excess heat, the results showed there was a maximum excess power of (10.28 ± 3.40) W when the deuterium pressure was 220 Pa. The excess heat measured in the system was far more than that in chemical reaction. The results of SEM and EDS implied that excess heat came from nuclear transmutation processes.

• Periodical: Key Engineering Materials (Volume 881)
• Pages: 51-56
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.881.51
• Online since: April 2021
• Authors: Xing Ye Wang*, Bing Jun Shen, Li Hong Jin, Ling Yu Li, Jian Tian
• Keywords: D/Pd Gas-Loading System, Excess Heat, Heat-Flow Calorimeter, Isothermal Calorimetry, Nuclear Transmutation

References

[1] Fleischmann M., Pons S. Electrochemically induced nuclear fusion of deuterium. Chemistry. Interfacial Electrochemistry, 261 (1989), 301-308.

DOI: 10.1016/0022-0728(89)80006-3

[2] Mizuno T. Observation of excess heat by activated metal and deuterium gas. Condensed Matter Nuclear Science, 25 (2017), 1-25.

[3] Verner G.M. Development of a cold fusion science and engineering course. Condensed Matter Nuclear Science, 22 (2017): 47-52.

[4] Bazhutov Y., et al. Calorimetric and radiation diagnostics of water solutions under intense light irradiation. Condensed Matter Nuclear Science, 19 (2016), 10-16.

[5] Curtis P., et al. Revisiting the cold case of cold fusion. Nature, 570 (2019), 45-52.

[6] Philip B. Lessons from cold fusion, 30 years on. Nature, 569 (2019), 601.

[7] Hagelstein Peter L. Empirical models for octahedral and tetrahedral occupation in PdH and in PdD at high loading. Condensed Matter Nuclear Science, 17 (2015), 35–66.

[8] Zhang Wushou, Zhang Xinwei, Wang Dalun, et al. Thermal analysis of explosions in an open palladium/deuterium electrolytic system. Condensed Matter Nuclear Science, 17 (2015), 116–123.

[9] Focardi S, Gabbani V, Montalbano V, et al. Large excess heat production in Ni-H systems. IL Nuovo Cimento A, 111 (1998), 1233-1242.

DOI: 10.1007/bf03545791

[10] Rossi A. Method and apparatus for carrying out nickel and hydrogen exothermal reaction: US, 736193(2011-01-13).

[11] Rossi A. Method and apparatus for carrying out nickel and hydrogen exothermal reactions: WO, 125444(2009-10-15).

[12] Tian Jian, Lu Xin, Shen Bingjun, et al. An excess heat phenomenon triggered by pressure in a H/Pd gas-loading system. Advanced Materials Research, 399-401(2012), 1433-1438.

DOI: 10.4028/www.scientific.net/amr.399-401.1433

[13] Lu Xin, Shen Bingjun, Tian Jian, et al. Excess heat triggered by different current in a D/Pd gas-loading system. Journal of Energy and Power Engineering, 7 (2013), 1299-1303.

[14] Zhang Wushou. Construction, calibration and testing of a decimeter-size heat-flow calorimeter. Thermochimica Acta, 499 (2010), 128-132.

DOI: 10.1016/j.tca.2009.11.013

[15] Mizuno T. Nuclear transmutation – the reality of cold fusion. Concord: Infinite Energy Press, (1997), 125-133.