Hydrodynamic Effects on Spectroscopic Water Detection in Gasoline Pipe Flow

Jeong Heon Kim and Chang Sik Lee
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Jeong Heon Kim: R&D Division, IGT Corporation, 403 Industry Academy Collaboration Center, Kongju National University, 1223-24 Cheonandaero, Seobukgu, Cheonansi, Chungnam 331-717, Korea
Chang Sik Lee: School of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea

Energies, 2014, vol. 7, issue 6, 1-13

Abstract: The hydrodynamic effects on spectroscopic water detection were microscopically investigated in a gasoline pipe flow. The effects of the gasoline flow rate and the water content on the water droplet characteristics were investigated experimentally using a phase Doppler particle measurement system. The characteristics of spectral absorbance of water and gasoline were measured using a spectrophotometer to determine the optimal wavelength of the incident light for spectroscopic water detection. The effects of the droplet size on the light transmittance characteristics were calculated using the light extinction theory of Mie scattering on polydisperse particles and experimental results on the water droplet size in the gasoline flow. The measurement results of spectral absorbance showed that gasoline was almost transparent at 980 nm wavelength of light while water showed peak absorption at this wavelength, therefore, it was appropriate incident light for spectroscopic water detection. It was found that the flow conditions of the gasoline flow rate and the water content influenced the Sauter mean diameter and the volume concentration of water droplets, which influenced the light transmittance.

Keywords: spectroscopic water detection; light transmittance and absorbance; hydrodynamic break-up; phase Doppler measurement (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: 2014
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