광학기술 기반 연소 유동장 진단 및 필터 탈취 성능평가에 관한 연구

Abstract

In this manuscript, measurement results on the temperature and concentration fields of various gas species using laser absorption spectroscopy are introduced. Combustion characteristics were analyzed by the use of optical-tomography measurement techniques, in which laser technology and computed tomography technology were adopted to measure temperature and concentration distribution in 2D and 3D spaces. CT-TDLAS has been adopted for the measurement of temperature distribution at a cross-section of Methane-Air and Propane-Air premixed flame. The temperatures obtained by using the CT-TDLAS technique were compared with those obtained by thermocouples. In the measurement range of temperature 1,100 K to 1,400 K, an error range was measured 0.21% to 7.00%. Complete and incomplete combustion conditions were diagnosed through concentration distribution of combustion products. In addition, performance comparison was made based upon the gas detection tube method and TDLAS system, which is an evaluation method of the deodorization performance of vehicle filters. Performance comparison was made based upon the gas detection tube method which is used as evaluation method of the deodorization performance of vehicle filters. Experiments were conducted for the measurements of the concentration of ammonia gas in order to evaluate the deodorization performance of vehicle filters. As a result of filtering the ammonia gas (100ppm), it was confirmed that there is a difference in the measurement results of deodorization performance between the TDLAS method and the gas detection tube method. However, TDLAS was the advantage of being similar to the real environment. Through these experimental results, it has been verified that the present TDLAS system can be utilized as a diagnosis tool for industrial applications, such as, for diagnoses of combustion condition and for evaluations of air filter deodorization.