Thermal performance analysis of naturally ventilated and perforated sheet based double skin facade system for hot summer conditions

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY International Journal of Ventilation Pub Date : 2021-03-22 DOI:10.1080/14733315.2021.1901003

M. Sharma, Sajan Preet, Jyotirmay Mathur, A. Chowdhury, S. Mathur

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引用次数: 2

Abstract

Abstract A new skin of perforated sheets in the cavity of double skin facades (DSF) system is introduced for efficient heat removal from the cavity in hot summer conditions. In this paper, the analytical solution is developed to estimate the thermal performance of the double-skin façade system with and without perforated sheet operating under natural ventilation mode. This analytical model is designed to predict the solar heat gain coefficient (SHGC) for hot summer conditions. An experimental investigation has also been conducted to validate the proposed analytical model. Results showed good agreement between the measured and calculated value of SHGC for DSF system with and without perforated sheet. It is observed that the addition of a perforated sheet reduces the SHGC by nearly 51.5% as compared to DSF system. Perforated sheets enable a better stack effect within the air cavity zone and thereby improve heat transfer characteristics. Therefore, the benefit of the perforated sheet within the air cavity of DSF system is profound over conventional DSF system.

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夏季高温条件下自然通风穿孔双层幕墙系统的热性能分析

摘要:为了在炎热的夏季条件下有效地从腔体排出热量，在双层表皮立面(DSF)系统的腔体中引入了一种新的穿孔板表皮。本文提出了在自然通风模式下，对带和不带穿孔板的双层幕墙系统的热工性能进行了分析。该分析模型用于预测夏季高温条件下的太阳热增益系数(SHGC)。实验研究也进行了验证所提出的分析模型。结果表明，有和没有穿孔板的DSF系统的SHGC测量值与计算值吻合较好。结果表明，与DSF体系相比，添加穿孔板可使SHGC降低近51.5%。穿孔板在空腔区域内具有更好的堆积效果，从而改善传热特性。因此，空腔内穿孔板比传统的空腔内穿孔板具有更大的优越性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).