Objective
Objectives
Carefully planned use of natural light for indoor lighting has positive effects on the overall building energy demand. Because of the variable nature of daylight and in order to avoid visually unacceptable conditions, this must be done in a controlled way, which is possible using advanced daylighting systems. It requires also an electronic control of the supplementary artificial lighting. The performance of such combined systems is not yet understood in a quantitative way. Two issues are crucial for the success of any integrated daylighting/controls system: the energy savings and the user acceptance.
A minimum of 2 and a maximum of 4 systems will be evaluated both in practice and under laboratory conditions. The evaluation includes both energy saving potential and user acceptance. This way it is anticipated to develop a method for the performance prediction of real systems on the basis of simple laboratory tests.
Technical Approach
The overall system performance must be evaluated in direct comparison to conventional systems, i.e. windows without any electronic controls. The performance evaluation must include the artificial lighting system and the appropriate controls. It is not sufficient to measure workplane illumination levels. Luminance distributions are probably more important and shall be evaluated as well. The comparison will be performed in defined, unused full-scale test rooms. In order to provide methods for future comparative evaluation studies, parallel investigations using scaled models under an artificial sky and computer simulations will be carried out, compared to the test room results, modified, if necessary, and validated.
The user reaction is determined in three different ways: One of these methods is based on computer simulation by creating a static virtual reality. This is important for the inclusion of natural daylight in subjective test procedures: it is the only way to ensure reproducible test conditions. Another method is questioning office workers under specific conditions. The advantage is that subjectives are in a real environment with their work and movement etc.. The third method uses objective testing of persons with respect to measurable criteria. The disadvantage of tests in reality is that test conditions with daylight are not reproducible.
Expected Achievements and Exploitation
Having both at hand: a standardized test procedure and a reliable user assessment prediction, it will be possible to make realistic assessments of the energetic impact of daylighting technologies on buildings.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering control systems
- natural sciences computer and information sciences software software applications virtual reality
- natural sciences mathematics applied mathematics mathematical model
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
79110 FREIBURG (IN BREISGAU)
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.