A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ignitability of sprayed liquid due to an electrostatic spark (II)
The current paper deals with the MIE (minimum ignition energy) due to an electrostatic spark of a sprayed liquid relative to the percentage of N2 (nitrogen), including compression in an air cylinder. The charge amount while spraying and electrostatic sparks in a sprayed region were also observed. Two types of handheld spray guns and a supply of air pressure in the range of 0.1 MPa to 1 MPa were used in this study. With regard to the materials, kerosene was selected for ignition tests while spraying, and water, including some sodium chloride, was used to investigate the charge amount of the sprayed liquid. The following noteworthy results were obtained: (1) The ignitability of sprayed liquid was dramatically reduced by atomising with an air changing the percentage of N2 instead of pressurised pure air, and its efficiency increased with increasing the supply of air pressure. (2) The charge amount, -1.72 microC/kg to -2.62 microC/kg, was obtained using a spray gun A (-0.82 microC to -3.75 microC/kg with spray gun B); the values obtained in this study are far from safe in the painting industry, and (3) several electrostatic sparks in the spraying region were observed while spraying. Experimental details and a discussion are presented in this paper.
Ignitability of sprayed liquid due to an electrostatic spark (II)
The current paper deals with the MIE (minimum ignition energy) due to an electrostatic spark of a sprayed liquid relative to the percentage of N2 (nitrogen), including compression in an air cylinder. The charge amount while spraying and electrostatic sparks in a sprayed region were also observed. Two types of handheld spray guns and a supply of air pressure in the range of 0.1 MPa to 1 MPa were used in this study. With regard to the materials, kerosene was selected for ignition tests while spraying, and water, including some sodium chloride, was used to investigate the charge amount of the sprayed liquid. The following noteworthy results were obtained: (1) The ignitability of sprayed liquid was dramatically reduced by atomising with an air changing the percentage of N2 instead of pressurised pure air, and its efficiency increased with increasing the supply of air pressure. (2) The charge amount, -1.72 microC/kg to -2.62 microC/kg, was obtained using a spray gun A (-0.82 microC to -3.75 microC/kg with spray gun B); the values obtained in this study are far from safe in the painting industry, and (3) several electrostatic sparks in the spraying region were observed while spraying. Experimental details and a discussion are presented in this paper.
Ignitability of sprayed liquid due to an electrostatic spark (II)
Choi, Kwang-Seok (author) / Yamaguma, Mizuki (author) / Ohsawa, Atsushi (author)
2007
12 Seiten, 6 Bilder, 5 Tabellen, 7 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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