Pool Boiling Heat Transfer Coefficient of Low-Pressure Glow Plasma Treated Water at Atmospheric and Reduced Pressure

Bartosz Gil, Zbigniew Rogala and Paweł Dorosz
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Bartosz Gil: Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland
Zbigniew Rogala: Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland
Paweł Dorosz: Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

Energies, 2019, vol. 13, issue 1, 1-13

Abstract: This paper investigates the influence of low-pressure glow plasma water treatment on boiling phenomenon. The presented results show the novel influence and potential new applications of low-pressure glow plasma treated water. Low-pressure glow plasma water treatment affects some of its physical properties such as surface tension, pH, and electric conductivity; this is due to changes in the water structure. An experimental analysis aimed to investigate the effect of such a treatment on the boiling heat transfer coefficient of water, and to assess the stability of GPTW. The experiments were carried out at atmospheric and reduced pressure for heat fluxes up to 70 kW/m 2 . The analysis shows significant deterioration of the boiling heat transfer coefficient under reduced pressure. In addition, the plasma treatment process had no significant effect on the thermal conductivity of water, as confirmed experimentally. A slight increase was observed, but it was within the measuring error range of the instruments used.

Keywords: heat transfer coefficient; natural refrigerant; water; pool boiling; low-pressure glow plasma; thermal conductivity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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