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CT-TDLAS를 이용한 고온 배기가스의 3차원 온도분포 측정
윤동익,김준호,전민규,최두원,조경래,도덕희,YOON, DONGIK,KIM, JOONHO,JEON, MINGYU,CHOI, DOOWON,CHO, GYEONGRAE,DOH, DEOGHEE 한국수소및신에너지학회 2018 한국수소 및 신에너지학회논문집 Vol.29 No.1
3-dimensional temperature distribution of the exhaust gas of a fire flame of LPG have been measured by the constructed CT-TDLAS system. 3-Dimensional temperature distributions are measured by 2 layers of CT-TDLAS. Each layer has $8{\times}8$ laser beams implying the temperatures of 64 meshes are measured. SMART algorithm has been adopted for reconstructing the absorption coefficients on the meshes. The line strengths at 6 representative wave lengths of $H_2O$ have been used for obtaining the absorption spectra of the exhaust gas. The temperature distributions measured by the constructed CT-TDLAS have been compared with those by the thermocouples. The relative errors measured between by thermocouple and CT-TDLAS were 13% in average and 33% at maximum. The similarity of temperature distribution between by thermocouples and by CT-TDLAS has been shown at the lower layer than the upper layer implying an unstability of combustions.