Kögl M, Pahlevani M, Zigan L (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 20
Pages Range: 1-12
Article Number: 5721
Journal Issue: 19
DOI: 10.3390/s20195721
In this work, the possibility of using a two-color LIF (laser-induced fluorescence) approach for fuel composition and temperature measurements using nile red dissolved in n-decane/butanol blends is investigated. The studies were conducted in a specially designed micro cell enabling the detection of the spectral LIF intensities over a wide range of temperatures (283–423 K) and butanol concentrations (0–100 vol.%) in mixtures with n-decane. Furthermore, absorption spectra were analyzed for these fuel mixtures. At constant temperature, the absorption and LIF signals exhibit a large spectral shift toward higher wavelengths with increasing butanol concentration. Based on this fact, a two-color detection approach is proposed that enables the determination of the butanol concentration. This is reasonable when temperature changes and evaporation effects accompanied with dye enrichment can be neglected. For n-decane, no spectral shift and broadening of the spectrum are observed for various temperatures. However, for butanol admixture, two-color thermometry is possible as long as the dye and butanol concentrations are kept constant. For example, the LIF spectrum shows a distinct broadening for B20 (i.e., 80 vol.% n-decane, 20 vol.% butanol) and a shift of the peak toward lower wavelengths of about 40 nm for temperature variations of 140 K.
APA:
Kögl, M., Pahlevani, M., & Zigan, L. (2020). A novel approach for measurement of composition and temperature of N-Decane/butanol blends using two-color laser-induced fluorescence of nile red. Sensors, 20(19), 1-12. https://dx.doi.org/10.3390/s20195721
MLA:
Kögl, Matthias, Mohammad Pahlevani, and Lars Zigan. "A novel approach for measurement of composition and temperature of N-Decane/butanol blends using two-color laser-induced fluorescence of nile red." Sensors 20.19 (2020): 1-12.
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