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Search Results (4)

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Keywords = curtain wall system (CWS)

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25 pages, 24400 KiB  
Article
Assessing the Impact of Façade Typologies on Life Cycle Embodied Carbon in University Building Retrofits: A Case Study of South Korea
by Jingwen Liu and Chungyeon Won
Sustainability 2024, 16(20), 8901; https://doi.org/10.3390/su16208901 - 14 Oct 2024
Cited by 2 | Viewed by 1862
Abstract
This study examines the influence of façade typologies on Life Cycle Embodied Carbon (LCEC) in retrofitting university buildings in South Korea. By analyzing 28 cases across seven retrofit scenarios, four main façade types—PW-1, PW-2 (Punched Walls), WW (Window Walls), and CW (Curtain Walls)—were [...] Read more.
This study examines the influence of façade typologies on Life Cycle Embodied Carbon (LCEC) in retrofitting university buildings in South Korea. By analyzing 28 cases across seven retrofit scenarios, four main façade types—PW-1, PW-2 (Punched Walls), WW (Window Walls), and CW (Curtain Walls)—were identified as key drivers in retrofit outcomes. PW-1 and PW-2 often require over-cladding due to demolition complexities, whereas WW and CW, despite undergoing full demolition and re-cladding, do not necessarily result in higher carbon emissions. The use of Exterior Insulation and Finish Systems (EIFS) can achieve up to a 35% reduction in LCEC compared to traditional materials like stone, particularly in cases requiring minimal structural reinforcement. By balancing sustainability with architectural integrity, this study offers valuable guidance for similar projects globally, providing insights into optimizing retrofit strategies for more sustainable building practices. Full article
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15 pages, 3869 KiB  
Article
Performance Comparison and Analysis of the Curtain-Wall-Type Liquid-Type Photovoltaic Thermal Unit According to the Pipe Connection Method
by Yunho Kim, Jungha Hwang, Sangmu Bae and Yujin Nam
Energies 2022, 15(7), 2317; https://doi.org/10.3390/en15072317 - 22 Mar 2022
Viewed by 1680
Abstract
Recently, there has been increasing attention on the use of renewable energy in buildings, particularly, the photovoltaic thermal (PVT) system that uses both solar power and thermal energy. However, there is a limit to adopting the PVT system in real buildings because many [...] Read more.
Recently, there has been increasing attention on the use of renewable energy in buildings, particularly, the photovoltaic thermal (PVT) system that uses both solar power and thermal energy. However, there is a limit to adopting the PVT system in real buildings because many architects value the aesthetics of buildings or spaces. This study developed a curtain-wall-type liquid-type PVT (CW-PVT) that can be installed on a wall as it integrates with the building. To analyze the system performance, a real-scale experimental plant was established in an outdoor environment. The performance of the CW-PVT unit was verified for two different module pipe connection types: parallel and serial. Meteorological variable data, the inlet and outlet fluid temperatures, surface temperature, and electrical energy generation of the modules were measured and collected using the measurement equipment according to the module pipe connection type. Consequently, the parallel-type method was approximately 10% more efficient than the serial type in energy production, whereas the serial-type method produced water with a temperature approximately 47% higher than that of the parallel type. Notably, it was advantageous to apply the parallel-type connection to maximize the energy generation efficiency in buildings where the system efficiency is vital and the serial-type connection in buildings where the high temperature of hot water is required. Full article
(This article belongs to the Special Issue Renewable Energy Systems for Buildings)
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28 pages, 11772 KiB  
Article
In Situ Experimental Investigation of Slim Curtain Wall Spandrel Integrated with Vacuum Insulation Panel
by Fred Edmond Boafo, Jin-Hee Kim, Jong-Gwon Ahn, Sang-Myung Kim and Jun-Tae Kim
Buildings 2022, 12(2), 199; https://doi.org/10.3390/buildings12020199 - 9 Feb 2022
Cited by 1 | Viewed by 12958
Abstract
Almost every major city’s skyline is known for high-rise iconic buildings with some level of curtain wall system (CWS) installed. Although complex, a CWS can be designed for energy efficiency by integrating insulated spandrel components in space-constrained areas, such as slabs/plenums. The main [...] Read more.
Almost every major city’s skyline is known for high-rise iconic buildings with some level of curtain wall system (CWS) installed. Although complex, a CWS can be designed for energy efficiency by integrating insulated spandrel components in space-constrained areas, such as slabs/plenums. The main aim of this study was to experimentally examine the thermal performance of an optimized curtain wall spandrel system integrated with vacuum insulation panel (VIP) as spandrel insulation. The study is based on robust experimental evaluations, augmented with appropriate numerical computations. The main study is constituted of six parts: (1) evaluation of VIP specifications and thermal properties; (2) analysis of VIP spandrel configuration, fabrication, and installation in a test building facility; (3) thermal bridge characterization of VIP spandrels; (4) monitoring and assessment of VIP durability within the spandrel cavities; (5) thermal performance analysis; and (6) assessment of related limitations and challenges, along with some further reflections. In all, 22 VIPs (each of size 600 mm2) were used. The effective thermal conductivity of VIPs ranged from 5.1–5.4 (10−3 W/mK) and the average value for initial inner pressure was approximately 4.3–5.9 mbar. Three VIP spandrel cases were fabricated and tested. The results proved that the Case 3 VIP spandrel configuration (composed of a double-layer VIP) was the most improved alternative for integrating VIPs. Full article
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16 pages, 3075 KiB  
Article
Design for Manufacture and Assembly Oriented Design Approach to a Curtain Wall System: A Case Study of a Commercial Building in Wuhan, China
by Ke Chen and Weisheng Lu
Sustainability 2018, 10(7), 2211; https://doi.org/10.3390/su10072211 - 28 Jun 2018
Cited by 52 | Viewed by 10940
Abstract
A curtain wall system (CWS) is one of the most popular elements for the external walls of large, multistory buildings. Applying the design for manufacture and assembly (DfMA) principles to the design of a CWS aims to increase the quality, sustainability, and cost [...] Read more.
A curtain wall system (CWS) is one of the most popular elements for the external walls of large, multistory buildings. Applying the design for manufacture and assembly (DfMA) principles to the design of a CWS aims to increase the quality, sustainability, and cost efficiency associated with the assembly of the CWS. Studies reporting a DfMA-oriented design approach to CWSs are extremely rare. This paper reports a case study of a successful application of a DfMA-oriented design approach to a CWS in a commercial building in Wuhan, China. The case study provides valuable information about how DfMA could be applied to the construction industry. Through interviews with key project participants and on-site observations, the benefits of a DfMA-oriented CWS design were revealed, including decreased material cost and waste, reduced on-site assembly time, and improved quality and aesthetic performance of the CWS. It was also found that an operative multidisciplinary team underpinned the success of DfMA application in the case project, which, however, might be held back by the absence of any use of digital, parametric design technologies during the design process. Full article
(This article belongs to the Special Issue Sustainable Construction and Building Materials)
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