A comparative analysis of the radiant effect of external sunshades on glass surface temperatures

Kapur, Nikhil

doi:10.1016/j.solener.2003.09.016

Cited by 17 publications

(2 citation statements)

References 1 publication

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“…The main factors for designing energy-efficient buildings are walls, roof, orientation, size of openings, ratio of window/wall area, and shading devices [2,3]. Shading devices should be designed to maximize shading and hence minimize heat gain in summer, while maximizing indoor sunshine in order to maximize heat gain in winter [4]. To enhance the performance of shading devices, perforation metal plates with dense holes are often used as the curtain walls of high-rise buildings, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

2018

Shock and Vibration

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Perforation metal plates with dense holes are often used as external curtain walls of high-rise buildings. When air flow passes through these holes at a high speed, complex vortex is generated and causes a significant issue of wind-induced noise. In this study, both Reynolds-averaged Navier–Stokes (RANS) simulations and large-eddy simulations (LES) were conducted to study flow around high-rise buildings with an external sunshade curtain wall. First, wind speed distributions at the height of a typical level under 16 wind directions were acquired. Then, the maximum wind speed ratio and its corresponding azimuth were identified. Second, the sound pressure levels in the vicinity of the shading devices with two types of perforation plate schemes were calculated to evaluate the acoustic characteristics by using the FW-H equation to simulate sound generation and propagation. The results indicate that the maximum wind speed around the buildings exists at the building corners, and the maximum wind speed ratio is 2.8 observed at 0-degree wind direction. Under two different wind conditions, the aeroacoustic performance of perforation plate is enhanced with reducing end plate size and increasing aperture size. The overall sound pressure level (OSPL) and A-weighted sound pressure level (ASPL) around the shading devices are 80 dB and 68 dB(A), respectively, for the improved perforation plate scheme under the 1-year return period maximum speed, which are changed to 58dB and 45dB(A) under the annual average speed. Therefore, it is believed that perforation plates with small end plate size and large aperture size are desirable for the noise prevention design of shading devices.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

2018

Shock and Vibration

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“…Kapur strive to design the sunshade which would be harmony or even helpful to the facade design. Therefore, he set a Solar Laboratory at Arizona State University, Arizona, USA to measure the sunshade's effect on reducing solar radiation heat [7]. Giovanni put forward index representing the relationship of solar radiation gain and thermal environment indoor [8].…”

Section: Introductionmentioning

confidence: 99%

Design of Sunshade Board with South External Window of Residential Building in Hangzhou Based on Software Simulation Analysis of Energy Saving

Xu¹

2015

IJSH

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Availability of Solar Radiation on the Earth

Chwieduk¹

2014

Solar Energy in Buildings

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A comparative analysis of the radiant effect of external sunshades on glass surface temperatures

Cited by 17 publications

References 1 publication

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

Numerical Study on Wind‐Induced Noise of High‐Rise Building Curtain Wall with Outside Shading Devices

Design of Sunshade Board with South External Window of Residential Building in Hangzhou Based on Software Simulation Analysis of Energy Saving

Availability of Solar Radiation on the Earth

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