Gas Temperature Measurement Using Differential Optical Absorption Spectroscopy (DOAS)

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

A nonintrusive method for flow gas temperature measurement using differential optical absorption spectroscopy (DOAS) was demonstrated. A temperature-dependent spectra (TDS) originated from the DOAS spectra of sulfur dioxide (SO2) in the wavelength range of 276–310 nm was introduced, and the relationship between the TDS and the temperature was built through experimental calibration process. This relationship is found to be independent of SO2 concentration and can be used for temperature measurements. The experimental results indicated that the precision of the TDS method is < ± 0.3% for SO2 concentrations higher than 150 ppm with the optical path length of 170 mm. For lower concentrations, the precision is estimated to be ± 0.4% at 1 ppm. The relative deviation between the temperature measured by the TDS method and that measured by a thermocouple is within 3% in the temperature range of 298–750 K, and the TDS method has a quicker response to the fast-changing temperature than the thermocouple.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Tianjin University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Energiteknik

Nyckelord

Originalspråkengelska
Sidor (från-till)1014-1020
TidskriftApplied Spectroscopy
Volym72
Utgivningsnummer7
Tidigt onlinedatum2018 jan 1
StatusPublished - 2018
PublikationskategoriForskning
Peer review utfördJa