| Title |
Analysis of the Energy Saving Effect for the External Insulation Construction by Building Load Calculation Method |
| Authors |
Jaejoong Park ; Jemin Myeong ; Doosam Song |
| DOI |
https://doi.org/10.6110/KJACR.2017.29.3.097 |
| Keywords |
외단열 ; 내단열 ; 건물 부하계산 프로그램 ; 에너지 절감 External insulation ; Internal insulation ; Building load calculation program ; Energy saving |
| Abstract |
Reinforcement of insulation in apartment buildings reduces the heating and cooling energy consumption by lowering the heat transfer in the building envelope. There are differences between internal and external insulation methods in heat transmission properties. However, some building load calculation programs cannot analysis the differences between the two. This is because these programs do no account for the timelag or thermal storage effect of the wall according to the location of insulation. In this study, the heat transmission characteristics of internal and external insulation were analyzed by EnergyPlus, and heating and cooling energy demand was compared. The results showed that external insulation system had lower heating and cooling loads than internal insulation system. Also the heat transfer rate of external insulation is steadier than internal insulation. About 13.6% of heating and cooling energy demand decreased when the outdoor wall was finished with external insulation compared to the demand with internal insulation. |