Cooling energy performance and thermal characteristics of a naturally ventilated slim double-skin window

Haneul Choi, Youngsub An, Kyungmo Kang, Sunghoon Yoon, Taeyeon Kim

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2 Citations (Scopus)


A slim double-skin window (SDSW), which is a window that is naturally ventilated through a thin cavity of 20 mm, has recently been developed. This study aims to analyze the cooling energy performance of SDSW through field measurement and to numerically investigate its thermal characteristics and the influence of outer single glazing on it. The results of the field measurement showed that the room in which SDSW was installed had 9% less total cooling energy for a week in summer as compared to the room in which the triple glazing window was installed. The simulation results indicated that by changing the type of outer single glazing, the total solar heat gain (TSHG) differed by up to 34%. In addition, when the outer single glazing was low-emissivity glass, SDSW was the most effective. In the heat-transfer mode of the TSHG, the type of outer single glazing significantly affected short- and long-wavelength radiation rather than convection.

Original languageEnglish
Article number114113
JournalApplied Thermal Engineering
Publication statusPublished - 2019 Sep

Bibliographical note

Funding Information:
This research was supported by a grant ( 19RERP-B082204-06 ) from the Residential Environment Research Program funded by the Ministry of Land, Infrastructure, and Transport of the Korean government, and the Basic Science Research Program through the National Research Foundation of Korea (NRF) , funded by the Ministry of Science and ICT ( NRF-2017R1A2B3012914 ).

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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