#IES VE LICENSE COST SOFTWARE#

While BIM tolerates performance assessment at earlier building stages, such as orientation, the location of material properties, and window to wall ratio ( Chen et al., 2017 Gao et al., 2019), BEM software tools professionally evaluate building performance in more advanced stages ( Jin et al., 2019). Such an approach explains the growing demand for the application of building information modeling (BIM) for sustainable design, including building energy modeling (BEM) within the architecture, engineering, and construction (AEC) industries. This energy demand can be tackled by the effective use of energy within a built-up environment, by applying low energy designs and sustainable techniques. According to the international energy agency ( IEA, 2019), global energy demand rose by 2.3% in 2018, and is considered to be the fastest growth in the last decade. All these might slow down any possible application for the process and might cause some uncertainties for the professionals in the field applying it.Д®nergy use in buildings is a major contributor to energy consumption due to population increases, housing stock, and better living standards, and this leads to an expected increase in energy use. Overall, BIM-based energy modeling proved to be a promising tool for sustainable and low energy building design, however, the BIM to BEM process is a non-standardized method of producing building energy models as it varies from one modeler to another, and the BIM to BEM process.

The investigation has revealed a number of interoperability issues regarding the BIM data input and BEM data interpretation. All misrepresented data during the interoperability process were identified, followed by benchmarking between the BIM-based energy modeling simulation outcomes and the actual energy consumption of the case study, to assess the reliability of the process. This study addresses the accuracy and integrity of BIM-based energy modeling by investigating how well Autodesk's Revit (BIM), in conjunction with two of the most used energy modeling programs (BEM) known as DesignBuilder and Virtual Environment (IES-ve), were integrated in terms of interoperability, including location and weather files, geometry, construction and materials, thermal zones, occupancy operating schedules, and HVAC systems. However, concerns about both the reliability and integrity of the data transfer process and the interoperability between the BIM and BEM prevent any implementation of BIM-based energy modeling on a large scale. If a building energy model can be flawlessly generated from a BIM model, the energy simulation process can be better integrated within the design, can be more competent, and timesaving. There is increasing need to apply building information modeling (BIM) to low energy buildings, this includes building energy modeling (BEM). 3The Faculty of Engineering, October University for Modern Sciences and Arts (MSA), Cairo, Egypt.2Architectural Systems Engineering (ASE) Department, Faculty of Engineering, October University for Modern Sciences and Arts (MSA), Cairo, Egypt.1College of Engineering, Applied Science University (ASU) (In Partnership With London South Bank University), Eker, Bahrain.

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