Daylight
Translated title
Dagslys
Author
Silvestru, Alexandra
Term
4. term
Education
Publication year
2019
Submitted on
2019-09-17
Pages
61
Abstract
This master’s thesis investigates daylight conditions in a room of a new office building with west-oriented window glazing. Two window sizes are assessed for daylight penetration, and calculation methods from the Danish Building Regulations 2018 (BR18) are compared with Danish Standard DS 17037. For the window type that meets BR18’s daylight requirements, dynamic simulations of thermal indoor climate are conducted to evaluate energy demands and comfort, and several ventilation systems are analyzed to identify solutions that both satisfy daylight criteria and maintain a balanced indoor environment. In addition, dynamic simulations are performed for future climate conditions based on the IPCC A1B scenario toward 2100 to examine potential changes in daylight and thermal indoor climate. Findings indicate that the BR18 methods produce similar results, while DS 17037 can validate parts of the calculations. The thermal indoor climate can be balanced using mechanical ventilation with cooling or with venting; under future climate conditions, less daylight transmission through the glazing is estimated, and mechanical ventilation with cooling may pose overheating risks, whereas venting can still maintain comfort.
Denne masterafhandling undersøger dagslysforholdene i et kontorrum i en ny kontorbygning med vestvendt vinduesglas. To forskellige vinduesstørrelser vurderes med hensyn til, hvor meget dagslys der når ind i rummet, og beregningsmetoder fra Bygningsreglement 2018 (BR18) sammenlignes med Dansk Standard DS 17037. For den vinduestype, der opfylder BR18s dagslyskrav, udføres dynamiske simuleringer af termisk indeklima for at belyse energibehov og komfort, og flere ventilationssystemer analyseres for at finde en løsning, der både opfylder dagslyskrav og sikrer et balanceret indeklima. Derudover gennemføres dynamiske simuleringer for fremtidige klimaforhold baseret på IPCCs A1B-scenarie frem mod 2100 for at vurdere mulige ændringer i dagslys og termisk indeklima. Resultaterne viser, at de to BR18-metoder giver lignende udfald, mens DS 17037 kan bruges til at validere dele af beregningerne. Det termiske indeklima kan balanceres med mekanisk ventilation med køling eller med udluftning; i et fremtidigt klima forventes mindre dagslystransmission gennem glasset, og mekanisk ventilation med køling kan medføre risiko for overophedning, mens udluftning fortsat kan sikre komfort.
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