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Lifecycle CO2 Reduction by Implementing Double Window Casement Systems in Residential Units in Korea

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Department of Architectural Engineering, Gyeongnam National University of Science and Technology, 33 Donjinro Jinju 660-758, Korea
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Department of Architectural Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
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Authors to whom correspondence should be addressed.
Academic Editor: Chi-Ming Lai
Energies 2015, 8(2), 1336-1352; https://doi.org/10.3390/en8021336
Received: 10 October 2014 / Accepted: 3 February 2015 / Published: 10 February 2015
This study investigated lifecycle CO2 (LCCO2) emission reductions through application of double-window casement systems (DWCS) in residential units in Korea, compared with conventional single windows (SWs). The DWCS is a double window system that is energy-efficient, reducing energy consumption during operation. However, this system incorporates increased embodied CO2 emissions. We evaluated LCCO2 reductions associated with use of the DWCS by calculating CO2 emissions during space conditioning as well as the embodied CO2 emissions of the DWCS. The results showed that use of DWCS in a residential unit during the cooling season had 26.2 and 27.4 t CO2 fewer emissions than SWs in the natural ventilation and minimum ventilation modes, respectively. Although implementation of DWCS is expected to substantially reduce LCCO2 emissions, the large embodied CO2 emissions of the aluminum frame reduce the benefits of the DWCS. View Full-Text
Keywords: double-window system; residential unit; lifecycle CO2; energy simulation double-window system; residential unit; lifecycle CO2; energy simulation
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Cheong, C.H.; Kim, T.; Leigh, S.-B. Lifecycle CO2 Reduction by Implementing Double Window Casement Systems in Residential Units in Korea. Energies 2015, 8, 1336-1352.

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