Thermal Performance Evaluation of Curtain Wall Frame Types

Song, Yong Woo; Park, Jin Chul; Chung, Min Hee; Choi, Byung Do; Park, Jung Ha

doi:10.3130/jaabe.12.157

Cited by 12 publications

(8 citation statements)

References 7 publications

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“…Curtain wall keel sections are made from steel and aluminum. Aluminum is suitable for lightweight curtain walls [1][2][3], but its production consumes more energy [2,4,5] and offers poor fire resistance [6,7]. Steel can be processed through methods like cold bending and welding.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Yao,

Han,

et al. 2023

Materials

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We researched the cold and hot composite-forming process, setting the forming speed at 2 m/min, the induction heating frequency at 40 KHz, and the induction current at 3000 A, and manufactured curtain wall steel with sharp corners. We analyzed the microstructure and mechanical properties of the deformation zone of the sharp-edged section using a tensile test, impact test analysis, metallographic observation (OM), fracture morphology observation, and electron backscatter diffraction (EBSD) analysis. The results show that the formed profile had a 96% reduction in the radius of the outer fillet and a 76% increase in the thickness of the corner compared to the pre-formed shape. The tensile strength increased by 3.6%, and the elongation after break increased by 13%. A forming temperature of 850 °C and forming deformation of 70% were determined as the optimum process parameters.

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Section: Introductionmentioning

confidence: 99%

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Yao,

Han,

et al. 2023

Materials

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“…The thermal performance will vary according to the material properties of these components and the complicated joint configuration, and the amount of reduction can be lowered by the performance of the metal frame. The design details, material properties, and joint configuration of the metal frame significantly affect the thermal performance of a curtain wall building [5][6][7][8][9][10]. Therefore, a wide range of research has been conducted on the development of the design details and components to improve the thermal performance of the metal frame.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Strategies to Improve the Thermal Performance of Steel Frames in Curtain Wall Systems

Yoo

Kim

2016

Energies

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Abstract:Recently, metal curtain wall systems have been widely used in high-rise buildings due to many advantages, including being lightweight, rapid construction, and aesthetic features. Since the metal frame may lead to lower energy performance, thermal discomfort, and condensation risk due to the high thermal conductivity, its thermal performance can be important for the improvement of the overall thermal performance of the curtain wall system, as well as the energy efficiency of the building envelope. This study aims to evaluate variety of design strategies to improve the thermal performance of steel curtain wall frames. Five base cases and three further steps were selected for two different head profile shapes based on a state-of-the art technology review, and their thermal transmittances were calculated through simulations according to the ISO 12631 standard which is an international standard for calculating thermal transmittance of curtain wall system. Measured results that were obtained from hot-box tests were compared with the calculated results to validate the simulation method of this study. The shape of the head profile did not strongly influence the overall thermal transmittance, and the choice of strategies for the rabbet space was more important. More effective strategies could be decided according to the steps for variation development. This result can serve as a guideline for the design of high-performance curtain wall frames.

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“…Also, compared with convective heating, in the case of radiant floor heating, the condensation occurred under relatively high humidity conditions. Song et al (2013) analyzed the surface temperatures, through simulation and a mock-up test, for three curtain wall frame types: aluminum, steel, and scagliola frames. Through these analyses, the insulation performance was evaluated for each curtain wall with each frame type.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Insulation Performance and Condensation Characteristics of a Vacuum Insulated Glass Window

Jeong

Yeo

Kim

2015

Journal of Asian Architecture and Building Engineering

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Through a mock-up test the surface temperature distribution and condensation characteristics were analyzed for a vacuum insulated glass (VIG) window, manufactured through an in-vacuum method, and compared with a double-glazed (DG) window. The outside air temperature was -21.2°C for a VIG window, at which the inside surface condensation begins to occur, given an inside air temperature of 20°C and an inside relative humidity of 50%; thus, given the typical weather conditions for Seoul, a VIG window is not likely to have condensation. The surface temperatures of the VIG window were found to be approximately 4 K-6 K higher than those of the DG window. In the case of the VIG window, the surface temperature of the center of glass is higher than that of the frame, because the vacuum insulated glass (VIG) has a superior insulation performance compared with the frame. However, the surface temperature of the edge of the vacuum insulated glass is lower than that of the frame, by approximately 0.9 K-1.5 K. Thus, to reduce heat loss and improve condensation resistance, measures to reduce heat loss at the glass connection should be established and frames should be utilized that have insulation performance equal to or better than VIG.

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Thermal Performance Evaluation of Curtain Wall Frame Types

Cited by 12 publications

References 7 publications

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Evaluation of Strategies to Improve the Thermal Performance of Steel Frames in Curtain Wall Systems

Experimental Study on Insulation Performance and Condensation Characteristics of a Vacuum Insulated Glass Window

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