| Keywords |
Dynamic thermal behavior; Non-steady-state; In-situ measurement; ISO 13786; Decrement factor |
| Abstract |
This study analyzes the decrement factor among the dynamic thermal behavior of a complete building component in a non-steady-state for a highly insulated concrete wall constructed with internal insulation. As a method of calculating the decrement factor, there is a theoretical calculation method according to ISO 13786 and in-situ measurement. The measurement period was summer, and compared environment parameters with previous studies, it is evaluated that the obtained environment data is similar during the measurement period. The decrement factor based on in-situ measurements is 0.053 to 0.202. On the other side, the decrement factor calculated by ISO 13786 is 0.329.
The deviation between the two values is 223.6% on average, and in this deviation is reasonable when compared with previous studies. The cause of these results is decrement factor according to the in-situ measurement is affected by the external environment, such as solar radiation. |