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Utilization of Daylight and Energy Refurbishment
CHRISTINA E. MADSEN, HENRIK SØRENSEN
Esbensen Consulting Engineers, Teknikerbyen 38, 2830 Virum, DK
ABSTRACT
The objective of the project described in this paper is to demonstrate an integrated comprehensive refurbishment of an office building, where a new building envelope integrating advanced energy components is combined with an advanced integrated control system for heating, ventilation and lighting. The renovation has to be carried out because of the poor standard of the facade and the renovation is therefore seen as an opportunity to decrease the energy consumption, and improve working conditions.
The paper describes the design process with focus on the calculations on daylight, energy and comfort using Radiance (ADELINE-package) and tsbi3 (a dynamic thermal program) in order to evaluate different design solutions eg. window sizes, different types of room layout and building envelope. The use of daylight is seen not only as an energy saving strategy, but the use of Radiance in combination with tsbi3 ensures that the energy optimization is not achieved at the expense of visual and thermal comfort.
The design process is carried out in close cooperation between the architects, the engineers and the building owner, which ensures that the design process will be a continuous work process with ongoing communication, where it is possible to identify critical parameters concerning the visual and thermal indoor climate at an early stage. Visual and thermal comfort and user control of indoor climate receive the highest priority in the design process, so that the user preferences stimulate the energy efficiency rather than compromise energy efficiency.
The renovation will take place during 1998 in two of the Danfoss administration buildings with a total floor area of approximately 13400m2. The renovation is supported from EU Thermie (DG XVII), and measurements will be carried out when the renovation is finished.
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