Title: Daylight Availability Prediction in the Early Stages of the Building Design Process
Authors: Geebelen, Ben
Issue Date: 27-May-2003
Abstract: The energy crisis of the 1970s instilled a new energy consciousness in building designers. Over the past few years daylighting has emerged as a new potential source of energy savings. The term “daylighting” refers to the deliberate use of the available daylight for replacing or complementing the artificial lighting in a building with the purpose of achieving energy savings. This dissertation examines the place of daylighting in the building design process. A study of prior research and a survey among practitioners reveal that lighting and daylighting play an active part in early design decisions, but that these decisions are rarely substantiated with simulation. This is in sharp contrast with the great importance of conceptual decisions. The dissertation then investigates possible solutions for this discrepancy. These pertain to both the design process and the available evaluation tools for daylighting. A detailed study of the different aspects of lighting in buildings reveals that contemporary simulation tools are not capable of correctly linking lighting and thermal simulation. A new daylight-availability prediction method is therefore developed that allows such a link and thus more accurate dynamic simulations for the prediction of daylight availability and energy consumption.
Table of Contents: - Part 1: The Design Process
- 1) The Design Process in Theory
- 2) The Design Process in Practice
- 3) The Design Process - Opportunities for Improvement
- Part 2: Performance Prediction
- 4) Theoretical Background
- 5) Current Prediction Tools
- 6) Towards New Tools
- Part 3: Design of a Prototype
- 7) Idea-L - Principles and Algorithms
- 8) Parameters and Error Analysis
- 9) Validation and Results
- Part 4: Conclusions
- 10) Conclusions and Future Work
- 11) References
Publication status: published
KU Leuven publication type: TH
Appears in Collections:Department of Architecture - miscellaneous

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