The Experts below are selected from a list of 152121 Experts worldwide ranked by ideXlab platform
Iman Kiani - One of the best experts on this subject based on the ideXlab platform.
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combined use of design of experiment and dynamic Building Simulation in assessment of energy efficiency in tropical residential Buildings
Energy and Buildings, 2015Co-Authors: Aidin Nobahar Sadeghifam, Seyed Mojib Zahraee, Mahdi Moharrami Meynagh, Iman KianiAbstract:Abstract Energy consumption has become an increasingly controversial issue in the modern world. Among the widest range of energy consumers, residential Buildings consume the largest amount of energy most of which is consumed by air conditioning systems in tropical countries. This paper attempted to examine energy saving in Building elements such as walls, floors, windows, roofs, and ceilings and how the integration of such optimized elements in conjunction with effective air quality factor can contribute towards an ultimate energy efficient design. A typical two-storey terraced house in Kuala Lumpur, Malaysia was chosen to model energy usage by means of dynamic Building Simulation. A case study was modeled using Revit Architecture software and analyzed using energy analysis software. Current energy consumption patterns were identified and the optimal level of energy usage was determined by replacing components with new energy efficient materials. Afterward, a Design of Experiment (DOE) method was used and the best combination of factor was identified. The results indicated that in residential Buildings in tropical regions, changing ceilings and ceiling materials are the most effective way to reduce energy consumption; moreover, wall materials and inside temperatures were in the next levels of significant factors respectively. These results can be used to help Building designers achieve optimum cooling load savings.
N R M Sakiyama - One of the best experts on this subject based on the ideXlab platform.
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natural ventilation potential from weather analyses and Building Simulation
Energy and Buildings, 2021Co-Authors: N R M Sakiyama, Leonardo Mazzaferro, Joyce Correna Carlo, T Bejat, Harald GarrechtAbstract:Abstract Naturally ventilated Buildings' performance relies on their design and climatic conditions. Thus, when investigating the natural ventilation potential (NVP), the meteorological data plays a crucial role. This study discusses NVP assessment under two approaches: a general evaluation, using only meteorological data; and a specific investigation through Building Simulation. Both analyses included in-situ measured data and open-access weather file. When compared, the climatic data presented some differences in the frequency of wind direction/speed values. Still, they showed similarities in the hourly data, which were perceived in the NVP general analysis. A multi-zone Airflow Network model was employed for specific NVP examinations. Following a structured calibration process, using measured data from an experimental campaign, the validated model presented a final total Goodness-of-fit (GOF) of 2.98%. Subsequently, an annual Building Simulation was carried out with a hybrid operation mode. The number of occupied hours with natural ventilation and heating loads presented the most significant difference to the detriment of the weather file used, depending on the zone. A greater discrepancy in thermal comfort evaluation was perceived according to the adaptive standard employed. The paper discusses some challenges faced at the NVP analyses and the calibration process, ending with some suggestions on how to address these issues.
Zhiqiang Zhai - One of the best experts on this subject based on the ideXlab platform.
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advances in Building Simulation and computational techniques a review between 1987 and 2014
Energy and Buildings, 2016Co-Authors: Haidong Wang, Zhiqiang ZhaiAbstract:Abstract Computer Simulation for Buildings has become affordable and possible in both research and industry during the last decades with rapid progress of computer industry as well as fundamental advancement of computational techniques. This paper provides an overview of such advancements achieved between 1987 and 2014, during which Professor Branko Todorovich served as Editor in Chief of Energy and Buildings Journal. The review, however, was not restricted to this journal only, in order to provide a fair snapshot on overall technique advances. Simulation and computational techniques cover a variety of aspects of Building. This paper focuses specifically on six different topics including ventilation performance prediction, whole Building energy and thermal load Simulation, lighting and daylighting modeling, Building information modeling, indoor acoustic Simulation, and life cycle analysis of Buildings. Major advances in each area are highlighted, as well as the trends for development and application.
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application of computational fluid dynamics in Building design aspects and trends
Indoor and Built Environment, 2006Co-Authors: Zhiqiang ZhaiAbstract:Computational fluid dynamics (CFD), as the most sophisticated airflow modelling method, can simultaneously predict airflow, heat transfer and contaminant transportation in and around Buildings. This paper introduces the roles of CFD in Building design, demonstrating its typical application in designing a thermally conformable, healthy and energy-efficient Building. The paper discusses the primary challenges of using CFD in the Building modelling and design practice. Furthermore, it analyses the developing trends in applying CFD to Building design, by thoroughly reviewing the literatures in all the proceedings of the International Conference on Building Simulation, one of the most influential symposiums in the Building Simulation field.
Lisa Guan - One of the best experts on this subject based on the ideXlab platform.
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preparation of future weather data to study the impact of climate change on Buildings
Building and Environment, 2009Co-Authors: Lisa GuanAbstract:The dynamic interaction between Building systems and external climate is extremely complex, involving a large number of difficult-to-predict variables. In order to study the impact of climate change on the built environment, the use of Building Simulation techniques together with forecast weather data are often necessary. Since most of Building Simulation programs require hourly meteorological input data for their thermal comfort and energy evaluation, the provision of suitable weather data becomes critical. In this paper, the methods used to prepare future weather data for the study of the impact of climate change are reviewed. The advantages and disadvantages of each method are discussed. The inherent relationship between these methods is also illustrated. Based on these discussions and the analysis of Australian historic climatic data, an effective framework and procedure to generate future hourly weather data is presented. It is shown that this method is not only able to deal with different levels of available information regarding the climate change, but also can retain the key characters of a “typical” year weather data for a desired period.
Godfried Augenbroe - One of the best experts on this subject based on the ideXlab platform.
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advanced Building Simulation
2004Co-Authors: Ali M Malkawi, Godfried AugenbroeAbstract:Advances in computer technology over recent years now mean Building Simulation can be used in the design process and even in the construction and daily operation of most Buildings. The techniques are sophisticated and require a good deal of expertise, so relatively few designers, builders and practitioners understand the full potential of the field even though Simulation can inform design decisions, enable performance analysis and diagnostic studies. This book should provide these readers with an overview of Building Simulation and its current advancements, and a grasp of current limitations and future directions.To begin, the book introduces recent trends in Building Simulation and outlines its historic development. The book then takes the reader on a journey into three major areas of investigations: Simulation with uncertainty, combined air and heat flow in whole Buildings, in particular the applications of Computational Fluid Dynamics (CFD) to the built environment, and the introduction of new paradigms for the effective use of Building Simulation including issues of integration and potentially very significant ways for users to interact and to engage in immersed Simulation.Leading experts in the field both in the US and Europe have written the chapters. The book provides a graduate-level student textbook as well as a guide to advanced methods for architects, engineers and other construction professionals.
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trends in Building Simulation
Building and Environment, 2002Co-Authors: Godfried AugenbroeAbstract:Abstract A broad range of Simulation software applications has become available for a variety of Building performance assessments over the last three decades. The maturation of Building Simulation into a recognized and indispensable discipline for all professions, involved in the design, engineering, operation and management of Buildings has now become the imminent challenge. The two key aspects dominate this evolution process: (1) attaining an increased level of quality assurance and (2) offering efficient integration of Simulation expertise and tools in the overall Building process. With its original base functionality in the design phase, Simulation is now becoming increasingly relevant in other stages of a project, such as during commissioning, as well as in the operational facility management phase. Meanwhile, the ‘appearance’ of Simulation is changing constantly, not in the least as a result of the Internet revolution. This is exemplified by new forms of ubiquitous, remote, collaborative and pervasive Simulation. These and other trends and manifestations are discussed in the light of the challenges that the Building Simulation discipline faces in becoming a daily instrument in the design and operation of Buildings.
