Abstract

The design and construction of the building envelope have a significant effect on the energy performance of buildings because the building envelope physically separates the exterior from the interior environment. The use of glass as a component of the building envelope has been significantly growing since its initial introduction as a building material. The glass is necessary for aesthetics, ventilation, and daylight. Despite the many benefits to the building, the glazing still provides the lowest insulating value. Of all envelope components, windows and skylights represent major sources of thermal losses and gains which impact the thermal comfort in buildings. Therefore, window size, type, and design are the most important consideration for reducing the need for space heating and cooling. This study investigates the thermal performance and the effectiveness of various modern glass facade systems to improve building efficiency levels. The main objectives of this study are to provide a comparison and evaluation of glazing systems and to establish guidelines for energy-efficient envelope design that provide architects and designers with a basic framework for the selection of the most appropriate glazing systems. It has been noted that the spectrally selective system and the electrochromic glazing system show high energy efficiency compared to other tested glazing systems.

Highlights

  • The building construction sector in the UAE has witnessed a fast track growth in last three decades

  • The results showed that the energy performance varies with the glazing type

  • The results show that the type of gas fills significantly improve the energy efficiency of the glazing system

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Summary

Introduction

The building construction sector in the UAE has witnessed a fast track growth in last three decades. To reduce the growth of energy consumption, a comprehensive energy efficiency measures should be adopted to improve building efficiency. In UAE, most of the new buildings adopt the concept of a fully glazed façade because of the advancement of façade construction technology and physical properties of glass. The interest among architects and engineers to design light and transparent buildings with fully glazed envelopes to access more daylight [2]. This trend could lead to unintended consequences of increasing the energy consumption of the construction due to higher solar heat gain

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