Acknowledgments Glen Walson, PE, LEED AP BIM Manager at Interface Engineering – David Horger BIM/CAD Technologies Developer at Interface Engineering – Stacey Lin, PE Principal at Interface Engineering – Aryn Bergman, PE Mechanical Engineer at Tenderloin Consulting – Thank you for your pioneering efforts and contributions towards the development of this workflow and this AU class. Introduction Over the past several decades, detailed energy analysis has become an integral part of the design process for the built environment. Designers, Engineers, and Owners have come to rely on whole-building energy simulations and Computational Fluid Dynamics (CFD) to provide valuable feedback on the performance of their proposed designs to ensure the project meets its energy and occupant comfort goals. As a part of this process, Energy Analysts and Mechanical Engineers often require multiple energy analysis programs to produce energy performance models, compliance models for Title 24 and Leadership in Energy and Environmental Design (LEED), load calculation models, and computational fluid dynamics (CFD) models (often requiring different software for each instance). The workflow presented here will give an in-depth demonstration of how a single analytical Revit model can be used to generate the input geometry for use in multiple analysis programs. Rapid Analytical Model Geometry Creation The power of Revit, in terms of energy analysis, lies in its ability to rapidly create an analytical representation of a various envelope components (i.e. walls, roofs, windows, and building’s skylights). We use the to differentiate between a detailed architectural term “analytical model” model and a model that only contains the elements required to produce an accurate energy model. Typically, the process begins with a detailed Revit model provided to the Analyst by an Architect. The Analyst then creates a simpler analytical model which can then be imported into various analysis programs via the Green Building XML (gbXML) schema. The following subsections provide a detailed workflow of this process.
Acknowledgments Glen Walson, PE, LEED AP – BIM Manager at Interface Engineering David Horger – BIM/CAD Technologies Developer at Interface Engineering Stacey Lin, PE – Principal at Interface Engineering Aryn Bergman, PE – Mechanical Engineer at Tenderloin Consulting Thank you for your pioneering efforts and contributions towards the development of this workflow and this AU class. Introduction Over the past several decades, detailed energy analysis has become an integral part of the design process for the built environment. Designers, Engineers, and Owners have come to rely on whole-building energy simulations and Computational Fluid Dynamics (CFD) to provide valuable feedback on the performance of their proposed designs to ensure the project meets its energy and occupant comfort goals. As a part of this process, Energy Analysts and Mechanical Engineers often require multiple energy analysis programs to produce energy performance models, compliance models for Title 24 and Leadership in Energy and Environmental Design (LEED), load calculation models, and computational fluid dynamics (CFD) models (often requiring different software for each instance). The workflow presented here will give an in-depth demonstration of how a single analytical Revit model can be used to generate the input geometry for use in multiple analysis programs. Rapid Analytical Model Geometry Creation The power of Revit, in terms of energy analysis, lies in its ability to rapidly create an analytical representation of a building’s various envelope components (i.e. walls, roofs, windows, and skylights). We use the term “analytical model” to differentiate between a detailed architectural model and a model that only contains the elements required to produce an accurate energy model. Typically, the process begins with a detailed Revit model provided to the Analyst by an Architect. The Analyst then creates a simpler analytical model which can then be imported into various analysis programs via the Green Building XML (gbXML) schema. The following subsections provide a detailed workflow of this process.
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