Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

This paper is the second of two papers that report on the results of ASHRAE Research Project RP-1468. Accurate building performance analysis is necessary for designing high-performance sustainable buildings. This paper discusses the analysis of selected test cases conducted to arrive at mapping rules. The test cases presented include alternative modeling of curved facades; alternative modeling of an arched window with shades; and the analysis of the alternative location of thermal surfaces with respect to the outside face, centerline, and inside face of an exterior wall. The test cases were modeled using Building Information Models (BIMs) and building energy simulation (BES) tools, and simulations were performed. A Rapid Analysis of Energy Simulation Results (RAESR) spreadsheet tool was developed to support the comparison of simulation results. The development process and tools used to conduct the analyses are provided in thefinal three-volume report so they may be ofuse to other researchers. © 2019 Amer. Soc. Heating, Ref. Air-Conditoning Eng. Inc.. All rights reserved.

World University root node

School of Architecture

Vellore Campus

ASHRAE Transactions

Development of a reference building information model (BIM) for thermal model compliance testing—Part II: Test cases and analysis

This paper is the first two that report on the results of ASHRAE Research Project RP-1468. This paper presents an overview of the project and the three volumes of documentation included in the final report (Clayton et al. 2013). The purpose of the project was to produce reference models and guidelines for developing software to automate thermal model creation from a building information model into a building energy simulation (BES) for energy simulations. This paper describes the methods of the research and presents highlights of the guidelines. The variety of uses for energy simulation in the building design process leads to a differentiation of several different kinds of thermal models that may be extracted from a BIM. A Series 2, Level 1 model that addresses whole-building energy use at schematic stages of design is developed into a set of guidelines. A recommendation is to use the centerlines of enclosure elements to determine areas of thermal surfaces. Various recommendations are made for resolving curved surfaces, shading elements, and site elements. The guidelines are supported by detailed sensitivity studies and analysis, presented in the final report (Clayton et al. 2013). The investigations led to identification of future work to improve energy simulation tools and BIM tools. © 2016 ASHRAE.

Development of a reference building information model for thermal model compliance testing - Part I: Guidelines for generating thermal model input files

Daylighting is an important aspect in designing high performance buildings. Many simulation tools have been developed to study the daylighting performance of buildings. These tools primarily use CAD environments for creating architectural models, which are then converted into daylighting models to run on the daylighting simulation engines. Once the architect defines the architectural model in CAD, a simulation expert creates the simulation input file to perform daylighting analysis. Each tool has its own rules that the architect and the engineer have to follow to prepare the simulation input files, and the complexity depends on the tools. Currently, Building Information Modeling (BIM) is widely used in the AECO industries and BIM models are used as a means of exchanging data among different professionals involved in the design and construction of buildings. The present paper discusses the use of BIM for building performance simulations and mainly focuses on how daylighting analysis can be incorporated into a BIM environment, and what challenges and benefits exist in the process of integrating BIM with daylighting simulation tools. The paper presents the development and validation of a prototype to integrate the BIM tool, Revit with the daylighting simulation tools, Radiance and DAYSIM. © 2014 Elsevier Ltd. All rights reserved.

Energy and Buildings

Building Information Modeling (BIM)-based daylighting simulation and analysis

This paper presents our research and development of system interfaces between Building Information Modeling (BIM) and Building Energy Modeling (BEM), for supporting integrated architectural design and energy simulation. Our methods utilize the BIM authoring tools' Application Programming Interface (API) to translate BIM into Object-Oriented Physical Models (in Modelica) for building thermal simulation, and input files of ray-tracing software (Radiance) for daylighting simulation. Based on the methods, we have created two prototypes: Revit2Modelica and Revit2Radiance. Using these prototypes, when BIM (Revit models) are created for building design, multi-domain simulations (thermal and daylighting) can be conducted immediately. BIM becomes a common user interface for architectural design and building performance simulations. Copyright © 2011 by IPAC'11/EPS-AG.