Master Degree / Yüksek Lisans Tezleri

Permanent URI for this collectionhttps://hdl.handle.net/11147/3008

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Department: search.filters.department.Thesis (Master)--İzmir Institute of Technology, ArchitectureSubject: search.filters.subject.Window design

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Now showing 1 - 3 of 3
  • Master Thesis
    Optimizing the Window Size and Depth of a South-Facing Room With Prismatic Panels for a Better Daylight Performance
    (Izmir Institute of Technology, 2019) Köse, Fatma Büşra; Kazanasmaz, Zehra Tuğçe; Kazanasmaz, Tuğçe; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of Technology
    In a conventional side-lit room, light levels decrease rapidly as room gets deeper, resulting in excessive daylight exposure near the perimeter zones and need for artificial lighting at the back of the room. Therefore, it is not possible to achieve good lighting performance throughout the room unless any daylight strategy is developed. Advanced daylighting systems are developed to figure out this problem. Prismatic daylight-redirecting panels, for instance, improve daylight distribution through sun shading and redirection. This study mainly focuses on the performance of daylight redirecting prismatic panels attached in a south-facing, side-lit room with different room depths and windowto- wall-ratios (WWR). A deep-plan classroom was chosen as a reference case. The methodology is based on simulating the base model in Relux and testing it with alternative models composed of incrementally defined WWR and room depth values. The on-site measurements were performed to evaluate current daylight conditions and validate the simulation model. Illuminance values obtained throughout the room were evaluated in terms of the latest daylighting metrics and visual performance recommendations. Furthermore, simulation findings were used as inputs in constructing a multiple regression model to analyse the relation between room depth, window-towall- ratio and daylight illuminance. The study presents the optimal window-to-wall ratios in relation with varying room depths when prismatic panels are attached. It is considered that the requirements mentioned in standards can be revised taking account of advanced daylighting systems. Besides, the prediction model estimating illuminance in such design alternatives would be integrated in the initial design phase.
  • Master Thesis
    Improvement of the Thermal Performance of an Aluminium Window Frame With Cfd Analysis
    (Izmir Institute of Technology, 2019) Gökçen, Gökçe; Başaran, Tahsin; Başaran, Tahsin; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of Technology
    Most of the primary energy used in the world belongs to fossil fuels. Energyefficient activities are carried out in many different sectors in order to prevent the depletion of the reserves of these resources. The building sector is one of them and many different studies are being carried out to reduce the energy consumed in the buildings. Windows are the main unit of heat losses and gains in buildings. In literature, the main reasons for heat losses through windows are usually stated as glass units due to their large areas and relatively higher overall heat transfer coefficient. However, windows frames are as important as glass units because they also have higher heat transfer. Since the most commonly used material in window frames, which is aluminium, has the highest thermal conductivity value, this topic should be investigated. In this study, two different strategies are presented to improve the thermal transmittance of an aluminium frame without changing the frame geometry. The first strategy presented is the improvement of the gasket and thermal break materials in which high thermal conductivity materials are used which have a considerable impact on the thermal performance of aluminium window frames. The second strategy is to fill the cavities in aluminium profiles with polyurethane foam in order to reduce convection effects. Two dimensional CFD simulations of the aluminium window frame, modelled with information from the manufacturer, were used to investigate these improvement strategies. As a result of the study, the importance of thermal break and gasket materials used in the aluminium window frame has been seen and the thermal conductivity of these materials has a considerable effect on the thermal performance of the windows. Moreover, the polyurethane foam filled air cavities in the aluminium frame have positively affected the thermal performance of window as proposed and %29.44 improvements occurred.
  • Master Thesis
    Testing Room and Window Design Parameters for Daylight Performance According To Breeam Assessment Criteria: Cases of London and Izmir
    (Izmir Institute of Technology, 2019) Sönmez, İrem; Kazanasmaz, Zehra Tuğçe; Kazanasmaz, Tuğçe; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of Technology
    Daylight affects occupants' visual performance in the indoor environment. The amount of daylight determines the quality of the interior. If daylighting is controlled properly, it provides comfortable and healthy spaces for the occupants. It is the primary light source of interior and it saves energy decreasing the use of artificial lighting in the interior. Because of these reasons, daylight performance has a significant role in environmental assessment tools. As BREEAM is the first environmental assessment tool in the world which is published in the UK, it has been the subject matter in this thesis. BREEAM has 'Daylight' section in 'Health and Wellbeing' category. The illuminance value determines whether to get the credits or not in this category. It has been known that there are architectural parameters such as window size and surface reflectance that affect the illuminance value of the interiors. Each color combination of floor, wall, and ceiling results in a significant average reflectance value. Thus, the purpose of this thesis is to test the whole impact of these room and window design parameters on daylight performance according to BREEAM(universities, colleges, and higher education-occupied spaces) criteria with the cases of London and İzmir. The daylight performance simulation models of the reference rooms generated with four material alternatives were built in RELUX, under clear and overcast sky conditions. Simulations run for London and İzmir covering solstice and equinox days. Findings were discussed in the view of daylighting criteria of BREEAM. In general, daylight criteria of BREEAM which is based on conditions of London (UK) were found to be suitable and applicable for cases in İzmir.