| Title |
Thermal Resistance and Convergence Regarding the Internal and External Temperature Differences of Inside Insulated Concrete Wall |
| Authors |
문지훈(Moon, Ji-Hoon) ; 고명진(Ko, Myeong-Jin) ; 최두성(Choi, Do-Sung) ; 이예지(Lee, Ye-Ji) ; 김용식(Kim, Yong-Shik) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.11.261 |
| Keywords |
Thermal resistance; ISO 9869-1; Heat flowmeter method; Internal/External temperature differences; Inside insulated concrete wall |
| Abstract |
Accurate diagnosis in the thermal performance of opaque walls through in-situ measurement is required in various fields. Many studies have
tried to reduce the difference between the theoretical resistance using ISO 6946 and the thermal resistance using ISO 9869-1. There are many
factors related to the accuracy of thermal performance, but the most important factor involves the temperature differences between the internal
and external. This study aims to compare thermal resistance and convergence by selecting measurement periods with internal-external
temperature differences of 28.4℃, 19.7℃, and 10.8℃. The study results showed that differences between the thermal resistances was -2.3%
to 0.9%, which is similar to each other; three to five days of measurement fulfilled the convergence conditions of ISO 9869-1. If the stable
outdoor environment and sufficient internal-external temperature differences are satisfied, it is possible to obtain thermal resistance with
convergent properties that satisfy all of the convergence conditions regardless of the degree of internal-external temperature differences. |