Insulation performance comparison of curtain wall systems with existing pipe frames and truss-shaped insulation frames

Bo Hye Choi, Seung Yeong Song

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The purpose of this study was to compare insulation performance between a base case that applied the existing steel pipe frame and an alternative case that reduced thermal bridging by applying a truss-shaped insulation frame (TIF) to a back frame type curtain wall. Insulation performance was compared by obtaining the effective U-factor and the lowest indoor surface temperature through a three-dimensional steady-state heat transfer simulation. In addition, mock-up tests were performed to compare the U-factors of the base case and alternative case. The simulation results showed that the effective U-factor of the alternative case was 36% lower than in the base case, a significant heat loss reduction. The lowest indoor surface temperature of the alternative case was 0.5 °C higher than in the base case, showing that the surface condensation risk also decreased. In the mock-up test results, the alternative case U-factor was 33% lower than in the base case, confirming the associated large heat loss reduction. For the base case, both the effective U-factor by simulation and the U-factor by the mock-up test were much higher than the design U-factor according to the Korean Design Standard, which neglects thermal bridging, indicating a significantly increased heat loss caused by this factor. For the alternative case, however, both U-factors were similar to the design U-factor.

Original languageEnglish
Article number4682
JournalEnergies
Volume14
Issue number15
DOIs
StatePublished - 1 Aug 2021

Keywords

  • Curtain wall
  • Thermal bridge
  • Thermal insulation
  • Truss-shaped insulation frame

Fingerprint

Dive into the research topics of 'Insulation performance comparison of curtain wall systems with existing pipe frames and truss-shaped insulation frames'. Together they form a unique fingerprint.

Cite this