Energy Performance Evaluation for Exterior Insulation System Consisting of Truss-Form Wire-Frame Mullion Filled with Glass Wool

Jin-Hee Song, Cheol-Yong Park and Jae-Weon Jeong
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Jin-Hee Song: Lotte Engineering & Construction, 50-2 Jamwon-dong, Seocho-gu, Seoul 06515, Korea
Cheol-Yong Park: Department of Architectural Engineering, College of Engineering, Hanyang University, Seoul 04763, Korea
Jae-Weon Jeong: Department of Architectural Engineering, College of Engineering, Hanyang University, Seoul 04763, Korea

Energies, 2020, vol. 13, issue 17, 1-19

Abstract: Heat loss and gain through opaque envelopes of buildings are major factors that affect the overall cooling and heating loads in buildings. The government has enforced regulations to strengthen the thermal transmittance requirement level as a major means of reducing greenhouse gas emissions in the building sector. In addition, the thermal bridge is considered to be one of the major factors in heating load of buildings. In this study, truss-form wire frame was developed in order to minimize thermal bridge of steel mullion in exterior insulation system. In the case of thermal transmittance test for specimen of 0.145 W/m 2 K as design value, the value of the steel pipe was 0.190 W/m 2 K and the value of the truss-form wire frame was 0.150 W/m 2 K, respectively. This means the other is much smaller than the one in thermal bridge. For four cases, annual energy performance analysis was calculated using Passive House Planning Package (PHPP)—ideal condition without thermal bridge, steel pipe mullion without insulation in the rear side, steel pipe mullion with insulation in the rear side, and truss-form wire-frame mullion filled with glass wool. As results, the annual heating energy demands were 15.68 kWh/m 2 , 25.42 kWh/m 2 , 16.78 kWh/m 2 , and 16.09 kWh/m 2 , respectively.

Keywords: thermal bridge; truss insulation frame; dry exterior insulation system; building envelope performance; energy performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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