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Simulation-based design tools: real time energy systems performance informationDate: Wednesday, 12th May 2010 Programme
The present drive towards a sustainable built environment raises a number of challenges for practitioners. These derive from the need to reduce energy consumption, integrate clean energy sources, and meet increased expectations for human comfort/health and environmental protection. Responding to such challenges is a task made complex by the presence of interacting technical domains, diverse performance expectations and pervasive uncertainties. Integrated Building Performance Simulation (IBPS) provides a means to accommodate this complexity whilst allowing exploration of the impact of design parameters on solutions that provide the required life cycle performance at acceptable cost. IBPS portends a future in which practitioners routinely model the interacting heat, air, moisture, light, sound, electricity, pollutant and control signal flows within building/plant systems and thereby nurture performance improvement by design. In many regions throughout the world, sustainable energy solutions are being driven by legislation and standards that mandate the IBPS approach as best practice: e.g. the European Performance of Buildings Directive and ASHRAE’s Standard 189, both of which aim to bring about high performance buildings through a holistic approach to design. The IBPS approach can be used to ensure requisite levels of comfort and indoor air quality, to devise energy efficiency and demand management solutions, to embed new and renewable energy technologies, to lessen environmental impact, to ensure conformance with legislative requirements, and to inform energy action plans at all scales. Such functionality defines a new best practice approach to design because it respects temporal and spatial interactions, because it integrates all performance domains, because it supports co-operative working, and because it links life cycle performance to health and environmental impact. The approach is entirely rational from a practical viewpoint because it supports the gradual evolution of the problem description, with incremental performance outputs informing the actions to be taken at each design stage. This presentation will explain the state-of-the-art of IBPS and consider options for evolving simulation-based CAD systems that allow the interactive evolution of a design hypothesis against performance feedback given in real time. The ultimate goal is to provide designers with a high integrity representation of the dynamic, connected and non-linear physical processes that govern the disparate performance aspects that impact on the overall acceptability of buildings and their related energy supply systems.
Joe Clarke is a Personal Professor within the Department of Mechanical Engineering at the University of Strathclyde in Glasgow, where he delivers courses on Energy Systems and Environmental Engineering topics and pursues his research interests within the Energy Systems Research Unit. His research addresses energy systems performance at all scales and a feature of his work is the dissemination of Open Source, simulation-based design tools that enable engineers, architects and planners to assess the energy, comfort, health and environmental impacts of design solutions at all scales.
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