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류미라,전환영 한국기계기술학회 2020 한국기계기술학회지 Vol.22 No.4
While the vehicle has a wide front view, making it easy to recognize obstacles while driving, the rear side has a narrow view and the inconvenience of having to turn its head to check. A side mirror developed to address this discomfort is mounted outside the front door of a passenger car and used to identify rear objects. In this study, heat transfer analysis was performed and analyzed in order to obtain optimal defrost conditions using regression analysis method for removing mirror condensation and frost. As a result of this study, the coefficient of determination, R2, which represents the regression to the total variation through regression analysis, showed a good reliability of 85.3%. Comparing the predicted and interpreted values of the maximum temperature distribution in the regression equation established in this study, it was included in the 95% confidence interval, enabling the prediction of the maximum temperature distribution over the heat conduction time.
다구찌 기법을 이용한 자동차 후면 열선의 열전달 해석에 관한 연구
류미라,전환영 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.2
A cold chamber experiment was made to continuously record defrosting process of the frosted window. To achieve this purpose, first a warm-chamber experiment(23℃) were performed to measure inner and outer surface temperature of the rear window as functions of both time and position. In this study, mutual relation of each experimental condition was derived through minimum number of experiment using Taguchi Design method and ANOVA recently used in the various fields. The optimal temperature distribution using Taguchi technique is 120 sec, heat wire size is 1.0mm, and heat wire spacing is 25mm.
삼원배치법을 이용한 자동차 후면 열선의 성능 평가에 관한 연구
류미라,전환영 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.3
Both theoretical and experimental investigations were conducted to analyze defrosting behavior of a window heater operating in the low outdoor temperature(-20℃). To achieve this purpose, first a warm-chamber experiment(23℃) were performed to measure inner and outer surface temperature of the rear window as functions of both time and position. Secondly, a cold chamber experiment was made to continuously record defrosting process of the frosted window. Therefore this study was carried out to presume for mutual relation of analysis condition to get the optimum temperature distribution by three-way layout. The results shown that coefficient of determination has a fine reliability over 99.77%, 99.85% and temperature distribution is made by three-way layout.