Earticle

초록

영어

This study examines the effectiveness of nighttime passive cooling strategies in residential buildings located in warm climate zones, with a specific focus on integrating Phase Change Materials (PCM) with natural ventilation. The research conducts an empirical analysis of PCM's thermal performance during nighttime cooling and evaluates different specific heat calculation methods for PCM, determining that the heat balance equation method which is proposed previously provides the most accurate results with error margins below 0.5°C compared to measured data. The research utilized field measurements in a wooden single-story building in Kumagaya, Japan, analyzing PCM cold storage performance during nighttime ventilation over different seasonal periods. Results indicate that PCM's cooling capacity varies significantly with weather conditions, showing optimal performance during moderate temperature months (May) compared to warmer months (June, September). The study also demonstrates that building orientation significantly impacts cooling efficiency, with west-facing rooms or east-facing rooms shaded from morning solar radiation exhibiting superior performance in maintaining cooler indoor temperatures. The findings suggest that while PCM combined with nighttime ventilation shows promising potential for reducing cooling energy demand in temperate climates, optimal results are achieved when this passive cooling strategy is integrated with complementary passive design approaches or mechanical systems rather than implemented as a standalone solution. Future research should focus on determining optimal phase change temperature ranges for specific climate conditions and exploring hybrid passive-active cooling systems that maximize PCM's thermal storage capabilities.

목차

Abstract
1. 서론
1.1 연구의 배경 및 목적
1.2 PCM을 활용한 패시브 냉각에 대한 선행연구
2. 실측개요
3. PCM 표면 온도 계산을 위한 비열 모델
3.1 기존 연구에서의 상변화 물질 비열 계산
3.2 1차원 비정상 열전도 해석
3.3 축랭 잠재력
3.4 측정 결과와 계산 결과 간의 축랭 차이
3.5 패시브 주택에서 PCM 활용의 효과적 적용을 위한 고려사항
4. 결론
REFERENCES

저자

• 이태철 [ Lee, TaeCheol | 부산대학교 건축학과 박사수료 ]
• 윤성환 [ Yoon, SeongHwan | 부산대학교 건설융합학부 교수, 공학박사 ] Corresponding Author

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