Browse > Article
http://dx.doi.org/10.5345/JKIBC.2021.21.3.203

An Experimental Study to Establish a System for Vertifying the Insulation Performance of Buildings  

Kim, Hyun-Jin (Korea Land & Housing Corporation)
Choi, Se-Jin (Department of Architectural Engineering, Wonkwang University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.3, 2021 , pp. 203-211 More about this Journal
Abstract
Recently, the insulaton design standards for reducing the energy use of buildings have been strengthened. Althoug insulation work is the most cost-effective method for reducing the primary energy consumption per unit area of a building, there are no evaluation criteria for insulation performance at the time of construction and completion inspection. The purpose of this study is to provide objective data by establishing a standard for an analysis method and a method for easily experimenting with the exterior wall thermal transmittance of an apartment house using a thermal transmittance measuring device(TESTO 435). For the exterior wall of the test subject, the specific heat per unit area exceeded 20kJ/(m2·K), and the data at the end point suitable for ISO 9869-1 were analyzed by the average method. The measured values of the thermal transmittance for 3 consecutive days converged within +5% of the desing value, and the standard deviation of the thermal transmittance by day decreased in the order of 1-Day > 3-Day > 2-Day. The standard deviation of the thermal transmittance by time period decreased in the order of 00:00~24:00 < 19:00~07:00 < 00:00~07:00. The measured value of the thermal transmittance for the time perion of 00:00 to 07:00 per day almost coincided with an error of -3% to + 2% compare to the desing value.
Keywords
thermal transmittance; thermal resistance; thermal conductivity; insulation performance; insulation work;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Moon SJ, Chung WJ, Yeo MS. A comparison of exterior wall insulation performance measuremetn method for retrofits of old housee. Proceeding of the Architectural Institute of Korea; 2017 Oct 25-27; Gyeongju. Korea. Seoul (Korea): the Architectural Institute of Korea; 2017. p. 493-6.
2 Ministry of Land, Infrastructure and Transport. Design Criteria for Energy Conservation in Buildings. Sejong (Korea): Ministry of Land, Infrastructure and Transport; 2017. 16 p.
3 ISO 13788. Hygrothermal performance of building componets and building elements Internal surface temperature to avoid critical surface humidity and interstitial condensation Calculation methods. Switzerland: International standard; 2014. 40 p.
4 ISO 6946. Building components and building elements Thermal resistance and thermalransmittance Calculation methods. Switzerland: Intermational standard; 2017. 5 p.
5 KS F 2829. Thermal performance of buildings Quantitative detection of thermal irreularities in building envelpoes Infrared method. Seoul (Korea): Korea Standard & Cerification Information Center; 2005. 18 p.
6 ISO 9869-1. Thermal insulation Building elements In sutu measurement of thermal resistance and thermal transmittance. Switzerland: International standard; 2014. 37 p.
7 Ko MJ, Lee YJ, Choi DS. Convergence analysis of in-situ thermal transmittance of apartment house opaque exterior wall in winter season by average method of ISO 9869-1. Journal of Korean Living Environment system. 2018 Oct;25(5):603-10. https://doi.org/10.21086/ksles.2018.10.25.5.603   DOI
8 Kim HJ, i SJ. An experimental study on a performance evaluation of internal insulation of buildings over 20 years old. Journal of the Korea Institute of Building Construction. 2019 Dec;19(6):539-47. https://doi.org/10.5345/JKIBC.2019.19.6.539   DOI
9 KS F 2277. Thermal insulation Determination of steady state thermal transmission properties Calibrated and guarded hot box. Seoul (Korea): Korea Standard & Cerification Information Center; 2005. 31 p.