Thursday, 10th October 2013
SIMULATION TOOLS FOR DESIGN PROCESS
09.20-09.30 Welcoming from the Chairman of the Board of The Estonian Society of Heating and Ventilation
Engineers, Aivar Uutar, Estonia
09.30-09.40 Project introduction, Ana Rodriguez-Gabriel, Finland
09.40-10.40 Microclimate in Urban planning, Evyatar Erell, Israel
10.40-11.00 Coffee break
11.00-12.00 Performative and Parametric Design, Francesco De Luca, Estonia
12.00-13.00 Lunch and visit of the exhibition
13.00-13.30 Cost optimal facade design solutions, Martin Thalfeldt, Estonia
13.30-15.00 Integrating passive solar, daylighting, and shading. Scale model versus simulations, Norbert Lechner, USA
15.00-15.30 Coffee break
15.30-16.00 Computational tools for energy efficiency, Venkata Bandi, Finland
16.00-16.30 The role of simulation tools in design process, Teet Tark, Estonia
16.30-17.00 Conclusion of the exhibition, Norbert Lechner, USA
Microclimate in Urban Planning.
Prof Evyatar Erell
The English say that “Everyone talks about the weather, but nobody does anything about it”. Global climate change notwithstanding, we cannot do much to change the weather – but how we design our cities may certainly impact upon how weather affects us. However, to generate good climate responsive urban design, we must ask the right questions. For example, knowing the intensity of the urban heat island may be of academic interest, but this knowledge, in isolation, might actually be of little value, or worse – misleading. To understand how microclimate affects pedestrian thermal comfort in outdoor spaces or energy consumption in buildings, we must consider the complex interaction of several factors. The talk will illustrate these issues with regard to three common design strategies: control of building density, use of vegetation and application of high-albedo materials – based on empirical studies and computer simulation.
Performative and parametric design.
Ph.D Francesco De Luca
The increasing availability and usability of tools for daylight and energy simulation into parametric and generative design software facilitates the integration of environmental factors into the design process from the very early stages, improving the efficiency of the design processes and the performance of the buildings, giving to the designer new methodologies of work to create environmentally-aware performative architectural and spatial design. The presentation will focus on the new methodologies of integration of daylight and energy simulations into architectural design processes by parametric and generative computational tools.
Integrating passive solar, daylighting, and shading. Scale Models vs Computer Simulation.
Prof Norbert Lechner
The heating, cooling, and lighting needs of a building change over the day and over the year. For example, east windows need shading in the morning and west windows in the afternoon, while passive solar heating is needed only in the winter. In addition, the needs of buildings vary with climate and type. Any particular office building may need passive heating or not depending on the climate. However, it will need shading and daylighting in all climates. Instead of the mechanical and electrical systems making the adjustments by using much energy, the building fabric and especially the façade can make adjustments with little or no energy. In some cases, static systems using solar geometry can produce good results, but usually dynamic building devices are needed to adjust to the changes in the environment. The design of the building must be integrated so that the various systems can work together to create high performing sustainable buildings.
To create successful solar responsive designs, both solar geometry and solar strategies must be understood. Conceptually clear heliodons are the best tool for learning solar geometry and some of the solar strategies available for creating low energy buildings. When that basic understanding of solar responsive design has been achieved, the designer can use either computer simulation or a heliodon to create and test his or her solar responsive design. Without that initial introduction by a heliodon, it is difficult to successfully use computer modeling for several reasons. One common problem with the use of computers is expressed by “garbage in, garbage out”. Another problem is that programs are like black boxes that give results without explaining the logic. Thus, the best solar responsive buildings result when the designer first learns the basics with a conceptually clear heliodon and then uses whatever tool is most convenient for him or her in the design process.
Computational tools for energy efficiency.
The renovation process of a building for improving energy efficiency performance generally involves different stakeholders in planning and implementation stages. In the planning stage, the main stakeholders are architects, building-owners, engineers, and urban planners. They need to decide on what energy efficiency measures to be implemented among a wide range of alternatives. Thus, they need computational aid to assess possible impacts of different alternatives. Given this context, the presentation explores compliance of computational tools for decision-support during early stages of building renovation process using normative analysis.