The 2015 IECC and ASHRAE 90.1-2013 are considered to be parallel standards because Standard 90.1-2013 is an alternate compliance path. Green Building Council‘s LEED program, and as an alternate compliance path to the parallel edition of the IECC. A few jurisdictions do adopt Standard 90.1 as their energy code, but the application of 90.1 to projects is largely through above code programs, such as U.S. Reducing the energy consumption for cooling and lighting, as will as improving the indoor comfort are of a great importance towards sustainable and climate responsive building.Most jurisdictions adopt a version of the International Energy Conservation Code (IECC), which is often viewed as a codified version of ASHRAE Standard 90.1 even though they are developed independently. On the other hand, the thermal and visual comforts were increased. The results were a significant decrease in energy consumption for cooling and lighting. In addition, the design strategies included: opaque transparent ratio, orientation, and natural day and night ventilation. The technologies included: glazing performance, shading and solar control, insulation and thermal mass, and daylight systems.

Building simulation programs were used to evaluate the effects of applying different technologies and design strategies on the comfort and energy consumption. The study analysed the outdoor and indoor climatic conditions, to understand the problems of overheating, discomfort, and the energy needed to achieve the indoor environment quality. This paper is directed to optimize the thermal and visual comforts, and energy efficiency through applying different technologies and design strategies for office building envelope in hot arid climate. Since that they function as an environmental filter, and control the influence of the outdoor on the indoor environment, buildings envelope design strategies and technologies are necessary.

In hot arid climate, the energy consumption in office building for cooling and lighting is enormous due to problems of overheating and high solar gain. In the Middle East 40% of energy use is consumed in buildings, more than by industry or transport, and the absolute figure is rising fast, because of the recent construction booms.

Ashrae 90.1 pdf wall building envelope