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Content archived on 2024-05-27

European integrated daylighting design tool ('DIAL-EUROPE')


Objectives and problems to be solved: The primary objective is to develop a daylighting design tool, which will assist in the early design of windows in buildings, and lead to better energy and environmental performance. Secondary objectives are - to use descriptive and graphic inputs of a kind familiar to architects and to develop a diagnostic module, which by means of fuzzy logic rules provides feedback to the user on the success of the proposed design; - to integrate the visual, thermal and energetic functions of windows into one tool; - to produce a tool of value to both practice and education, which encourages learning by the user and thereby increases the level of knowledge of daylighting design; - to develop a tool, which applies to all European climates, takes account of European standards and practices, and provides a database of case studies for comparison. Description of the work: The project is divided into five work packages, with participants working on areas relevant to their expertise. The work packages are:· Daylighting: extension of the existing LESO-DIAL software for European climates, incorporation of advanced daylighting systems and visual comfort criteria.· Artificial Lighting: implementation of simple algorithms to evaluate the artificial lighting strategy, control systems and integration with daylighting.· Heating/Cooling: embedding an integrated energy model and overheating predictor model.· Case Studies Database: extension of the existing database to include Europe-wide examples and production of simulated cases (using Adeline software) to allow architects a wide range of examples for comparison.· Final Tool: creation of an integrated daylighting design tool. Where possible the work will build upon previous work, to avoid wasteful repetition. For example, the integrated energy model will be based on the LT Method, an existing energy design tool. The overheating predictor will be based on the Free-floating Internal Temperature Model developed in the PASCOOL project. Other areas, such as the daylight value of sunny skies, will require more original research efforts. An important part of the methodology will be the exposure of the design tool to practitioners and students to get feedback on technical content and compatibility with the design process. The latter will be the key result in the research of value and significance beyond the DIAL-Europe tool itself. Expected results and exploitation plans: The DIAL-Europe design tool has the potential for far-reaching results, which include the completed tool itself, a commercial package downloadable from the DIAL website, and the research results generated within the project, which will be disseminated in journals and at conferences. Other results include increased savings in energy from better use of daylight in buildings and potential improvements in the health and well-being of occupants. Building use studies have shown that occupants value daylight and view highly and the presence of these can lead to a reduction in absenteeism and improved productivity, thus reducing labour costs. At the global level, any reduction in the use of fossil energy sources will ultimately be beneficial to the environment.

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Chaucer Road 6
United Kingdom

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