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열확산계수가 다른 균일물질에 대한 동적 엑서지 분석법과 비정상상태 엑서지 분석법의 비교
조하빈(Jo, Ha-Bin),최원준(Choi, Wonjun) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1
Small temperature differences between a target system and reference state characterize thermal exergy phenomena in the built environment. Exergy analysis results change significantly with temporal changes in environmental conditions, limiting the applicability of steady-state exergy analyses. Dynamic exergy analyses have been used to mitigate these limitations, but they neglect the effect of heat capacity and only change the boundary condition over time. Recently, an unsteady-state exergy analysis method that does not violate the thermodynamic integrity has been established. In this study, the difference between dynamic and unsteady-state analyses are compared with materials of different thermal diffusivity to clarify the limitation of the dynamic analysis and the necessity of unsteady-state exergy analyses.