Now showing 1 - 5 of 5
  • Publication
    Specification and Implementation of IFC Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems
    Minimising building life cycle energy consumption is becoming of paramount importance. Performance metrics tracking offers a clear and concise manner of relating design intent in a quantitative form. A methodology is discussed for storage and utilisation of these performance metrics through an Industry Foundation Classes (IFC) instantiated Building Information Model (BIM). The paper focuses on storage of three sets of performance data from three distinct sources. An example of a performance metrics programming hierarchy is displayed for a heat pump and a solar array. Utilising the sets of performance data, two discrete performance effectiveness ratios may be computed, thus offering an accurate method of quantitatively assessing building performance.
  • Publication
    Specification of an Information Delivery Tool to Support Optimal Holistic Environmental and Energy Management in Buildings
    Building performance assessment for the operational phase of a building’s life cycle is heuristic, typicallywork- ing from available historical metered data and focusing on bulk energy assessment. Building Management Systems are used in the operational phase of the building to con- trol the building’s internal environment according to the design criteria outlined during the design phase. Recent developments in mechanisms that communicate building performance such as standardised building per- formance objectives and metrics enable the use of the out- put from whole building energy simulation tools by non- technical personnel and all project stakeholders. This paper proposes to specify and demonstrate the utilisation of an Information Delivery Tool that supports optimum holistic environmental and energy analysis aimed at an established profile of building managers utilising standardised performance objectives and metrics
  • Publication
    BIM - Geometry modelling guidelines for building energy performance simulation
    (International Building Performance Simulation Association (IBPSA), 2013-11-04) ; ; ;
    Building Information Models (BIM) are increasingly used as a central data repository from which designers transfer data from 3D CAD applications to building performance simulation (BPS) tools. For a widespread use of BIMs for this purpose, these models need to comply with a certain data quality standard. Based on a thermal viewpoint and underlying physical principles the authors develop data requirements for these models. These requirements are used to evaluate current data standards and to develop guidelines for the creation of these models. This paper will also describe several case studies and problems found in models that did not comply with those guidelines. Finally, the authors describe current limitations of tools and processes and propose future developments.
  • Publication
    BuildingPI: A Future Tool for Building Life Cycle Analysis
    Traditionally building simulation tools are used at the design phase of the building project. These models are used to optimise various design alternatives, reduce energy consumption and cost. Building performance assessment for the operational phase of a buildings life cycle is sporadic, typically working from historical metered data and focusing on bulk energy assessment. Building Management Systems (BMS) do not explicitly incorporate feedback to the design phase or account for any changes, which have been made to building layout or fabric during construction. This paper discuses a proposal to develop an Industry Foundation Classes (IFC) compliant data visualisation tool Building Performance Indicator (BuildingPI) for performance metric and performance effectiveness ratio evaluation.
  • Publication
    Scenario modelling: A holistic environmental and energy management method for building operation optimisation
    Building managers have specific duties and certain outputs that are required of them. Without the necessary data, information, tools, and time, they are unable to adequately meet their organisational goals. Scenario modelling enables explicit and unambiguous coupling of building functions with other pivotal aspects of building operation in a method that specifically considers the education and technical expertise of building managers. This new method captures, transforms, and communicates the complex interdependencies of environmental and energy management in buildings through an easily navigable, holistic, and reproducible checking mechanism that compares actual performance with predicted performance and completes the “plan-do-check-act” cycle for building managers. Most important, the structured nature of this method caters to the diverse profile of building managers, making it applicable for widespread deployment. This paper demonstrates the benefit of using the new method by examining its application to a performance analysis of two existing buildings.
    Scopus© Citations 20  1137