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CFD를 통한 천정형 에어컨의 온도센서 위치에 따른 열환경 분석
LIMEIHUA,신병환(B. H. Sin),김동규(D. G. Kim),금종수(J. S. Kum),정석권(S. K. Jeong) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Existing researches did not embody room's unsteady state which do not consider room's resistance in school classroom While, Koji SAKAI showed that he can handle change of room cooling and heating resistance in unsteady state and forecast correctly room thermal environment through CFD analysis. But, this research can't explain thermal environment analysis. because it is not resident's place such as school place and only consider outdoor air condition. therefore, this research show comfort thermal environment and energy saving technology for crowded resident in school through the CFD analysis. Because the present thermal environment depands on ceiling type Air-conditioner. Existing temperature sensor which is instituded air conditioner's intake. And this research assume position of temperature sensor in the case of 5 and analyze temperature distribution and air current distribution through CFD simulation.
A Study on the Process Optimization of Microcellular Foamed Ceiling Air-Conditioner 4-Way Panel
Joo-Kwon Kim(김주권),Jung-Hee Lee(이정희),Jong-Sun Kim(김종선),Jun-Han Lee(이준한),Jae-Seob Kwak(곽재섭) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.6
Deflected 4-way panels of ceiling air conditioners produced by injection molding process have caused dew condensation at the edge of products. In order to prevent this drawback with reducing weight and deformation, this study proposed renovated process adopting microcellular foaming. According to results from 2-sample t-test and analysis of variance(ANOVA), the critical factors affecting weight were melt temperature and injection speed. In addition, the vital effects on deformation were structure at the edge, mold temperature and cooling time. Optimal conditions of these parameters were derived by regressive analysis with CAE and response surface method(RSM), and then applied to an actual design and process stage to analyze performance. As a results, it clearly showed that new process improved process capability as well as reduced both weight and deformation by 18.8% and 71.9% respectively compared to the conventional method.