Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7755

Browse

Filters

2000 - 20083

Settings

COAR Access Rights: search.filters.coarAccessRights.open accessSubject: search.filters.subject.Light in architecture

Search Results

Now showing 1 - 3 of 3
  • Master Thesis
    A Prediction Model for Daylighting Illuminance for Office Buildings
    (Izmir Institute of Technology, 2008) Binol, Selcen; Kazanasmaz, Zehra Tuğçe
    Daylight is a primary light source for the office buildings where a comfortable and an efficient working environment should be provided mostly during day time. Evidence that daylight is desirable can be found in research as well as in observations of human behavior and the arrangement of office space. A prediction model was then developed to determine daylight illuminance for the office buildings by using Artificial Neural Networks (ANNs). A field study was performed to collect illuminance data for four months in the subject building of the Faculty of Architecture in .zmir Institute of technology. The study then involved the weather data obtained from the local Weather Station and building parameters from the architectural drawings. A three-layer ANNs model of feed-forward type was constructed by utilizing these parameters. Input variables were date, hour, outdoor temperature, solar radiation, humidity, UV Index, UV dose, distance to windows, number of windows, orientation of rooms, floor identification, room dimensions and point identification. Illuminance was used as the output variable. The first 80 of the data sets were used for training and the remaining 20 for testing the model. Microsoft Excel Solver used simplex optimization method for the optimal weights. Results showed that the prediction power of the model was almost 97.8%. Thus the model was successful within the sample measurements. NeuroSolutions Software performed the sensitivity analysis of the model. On the top of daylight consideration, this model can supply beneficial inputs in designing stage and in daylighting performance assessment of buildings by making predictions and comparisons. Investigation about this subject can be able to support the office buildings. having intended daylighting comfort conditions.
  • Master Thesis
    The Peculiarities of Light as a Quality in Architecture
    (Izmir Institute of Technology, 2000) Kutlu, H. Gökhan; Erkarslan, Özlem
    This study focuses on the evolution of lighting, both natural and artificial, and its effects on space. The twentieth century is taken as a focal time period, which had witnessed great developments in lighting field that caused inevitable transformations on space and spatial concepts. The evolution of artificial light, the significant innovations in building technology, and the new requirements formed under the desires of a new society are examined in their relation to architectural context with respond to light and lighting in space.The research includes cases from architectural and artistic world, and tries to investigate the role of light in the built environment. These cases are examined in a comparative way, considering the psychical and experiential characteristics of light in order to define its meaning for space.The study consists of two parts. In the first part the process of the evolution of lighting in the twentieth century, its position today, and the social, cultural, and technological alterations are examined deterministically. The second part is a classification of cases under the guidance of some concepts, which defines the interaction of light and space.
  • Doctoral Thesis
    An Evaluation Methodology for Assessing Artificial Lighting Quality in Architecture: the Case of Apikam
    (Izmir Institute of Technology, 2007) Kutlu, Hilmi Gökhan; Günaydın, Hüsnü Murat
    The aim of this dissertation is to design a qualitative evaluation methodology for artificial lighting. There is a problem in the general characteristics of lighting industry, deriving from its technical vocabulary which is mainly based on quantitative parameters, values, and systems which in some ways are neglecting the main ingredient of architecture: the user. The evaluation methodology that is subject of this dissertation was considered as a qualitative approach to lighting quality. The study benefited from the knowledge of environmental psychology, concerning the effect of lighting on behaviors and tried to integrate it to the process of assessing lighting quality. The methodology depends on data collection by various means such as surveys, measurements, and computer simulations. To test the qualitative evaluation methodology, a case study was designed in the exhibition hall of the Ahmet Piritina City Archive and Museum (APIKAM) in zmir. The evaluation methodology was successfully operated and made a detailed evaluation possible on the two lighting systems in the exhibition hall of APIKAM. Both lighting systems failed in functional aspects, because of the high intensity of light they produce, the emission of UV and IR wavelengths, and glare problems. They are simply not appropriate for the selected environment, where organic . based materials are exhibited. Recessed fluorescent lighting system failed in physiological aspects as it triggers less arousal than halogen spotlighting system. Both lighting systems have failed in attention scale under psychological aspects, because none of them supply continuity in the order of visual clues that match with the sequential order of the exhibition. For aesthetic and environmental judgments, the results of the survey showed that halogen lighting system was the preferred one by the subjects. For the sub-part of feelings, recessed fluorescent lighting systems failed, because it influenced generally negative feelings, while positive feelings are generally influenced by halogen spotlighting system.