지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 금종수
- 발행연도
- 2022
- 저작권
- 부경대학교 논문은 저작권에 의해 보호받습니다.
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Freeze accidents are frequently occurring due to low outside temperatures in winter. In particular, if the fire piping is frozen, it is exposed to the risk of fire during the maintenance period. Various methods are used to solve this problem, but there is a risk of fire or installation costs are expensive. Therefore, in this study, PCM is used to prevent freezing or to reduce power consumption of heating wires.
First, a numerical analysis model was created by using a finite difference method in the Matlab program. After that, the numerical analysis model was verified by comparing it with the actual measurement experiment results. Through numerical analysis simulation, it was confirmed that when PCM was used, the freezing time was delayed and freeze was prevented compared to general insulation fire piping. In the case of fire piping with heating wires, it was confirmed that the use of PCM reduced the operation rate of heating wires, thereby reducing power consumption.
Finally, in this study, information on whether PCM selection and heating wire installation are necessary is required for proper design of fire piping. Therefore, a regression equation was proposed to predict the freezing time through linear regression analysis of freezing time data according to various regions, latent heat, melting point, and PCM volume.
First, a numerical analysis model was created by using a finite difference method in the Matlab program. After that, the numerical analysis model was verified by comparing it with the actual measurement experiment results. Through numerical analysis simulation, it was confirmed that when PCM was used, the freezing time was delayed and freeze was prevented compared to general insulation fire piping. In the case of fire piping with heating wires, it was confirmed that the use of PCM reduced the operation rate of heating wires, thereby reducing power consumption.
Finally, in this study, information on whether PCM selection and heating wire installation are necessary is required for proper design of fire piping. Therefore, a regression equation was proposed to predict the freezing time through linear regression analysis of freezing time data according to various regions, latent heat, melting point, and PCM volume.
목차
제 1장 서 론 11.1 연구 배경 및 목적 11.2 기존 연구 31.3 연구 범위 4제 2장 기초 이론 52.1 1차원 정상 상태 전도 열전달 52.2 1차원 과도 전도 열전달 72.3 대류 열전달 82.4 유한차분법(Finite Difference Method) 112.5 상변화물질(Phase Change Material : PCM) 122.6 상변화 판별법 13제 3장 실측 실험 143.1 수치해석 143.2 실험 방법 143.3 실험 결과 18제 4장 PCM의 동파방지 효과 204.1 실험 목적 204.2 실험 방법 204.3 실험 결과 22제 5장 열선이 설치된 소방배관에서 PCM의 전력사용량 절감효과 235.1 실험 목적 235.2 실험 방법 235.3 실험 결과 25제 6장 PCM인자별 동파방지 효과와 동결시간 예측 286.1 실험 목적 286.2 실험 방법 286.3 인자 선정 286.4 실험 결과 316.4.1 PCM의 인자별 동파방지 효과 316.4.2 지역에 따른 소방배관의 동결시간 336.5 선형회귀분석 366.5.1 변수 366.5.2 선형회귀분석 결과 37제 7장 결 론 39참고문헌 41Appendix 44감사의 글 62
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