Phd Degree / Doktora

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Access Right: Embargoed AccessDepartment: search.filters.department.Thesis (Doctoral)--İzmir Institute of Technology, Architecture

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Now showing 1 - 4 of 4
  • Doctoral Thesis
    Development of holistic methodology for sustainable adaptive reuse of public heritage buildings: Dokuz Eylul gate building of Kültürpark
    (01. Izmir Institute of Technology, 2024) Güleroğlu, Selin; Arsan, Zeynep Durmuş; Akkurt, Gülden Gökçen
    Sürdürülebilir yeniden işlevlendirmenin sağlanabilmesi için yapının yeni işlevinin karar verilmesinden iyileştirme önerilerinin kararına kadar olan tüm süreci ele alan bütüncül bir yaklaşım gerekmektedir. Bu çalışma, sosyal, ekonomik, çevresel ve tarihi değerleri bütünleştirerek sürdürülebilir yeniden işlevlendirme için bütüncül bir yöntem sunmaktadır. Çalışmada geliştirilen metodolojiye göre birinci aşama yapının yeni fonksiyonunun belirlenmesine odaklanırken, ikinci aşama ise iyileştirme önerilerinin seçimini kapsamaktadır. Aşama 1'de, çevresel sürdürülebilirlik, kültürel değer ve sosyal etki gibi kriterler göz önünde bulundurularak toplumun talepleriyle uyumu garanti altına alıp, paydaş katılımını dikkate alan Analitik Ağ Süreci (ANP) kullanılarak binanın yeni işlevinin belirlenmesi önerilmektedir. Aşama 2'de kaynak verimliliğini ve malzeme yeniden kullanımını teşvik ederken, çevresel etkiyi azaltan optimum çözümler bulmak için enerji performansı, çevresel etki ve döngüsellik potansiyeli gibi ölçütlere dayalı iyileştirme önerileri belirlenmektedir. Geliştirilen yöntem, İzmir'deki Dokuz Eylül Kapı Binası üzerinde bir vaka çalışması olarak uygulanmıştır. Birinci aşamada, bina için en uygun yeni işlev olarak sanat galerisi ve müze belirlenmiştir. Binanın enerji tüketimi önceki işlevine göre %1,5 oranında artsa da, sosyal sürdürülebilirliğe katkısı yeni işleviyle önemli ölçüde artmaktadır. İkinci aşamada, duvar, çatı ve zeminler için koyun yünü yalıtımı ve düzcam kullanımını içeren en uygun iyileştirme senaryosu belirlenmiştir. Bu kombinasyon, enerji tüketimi (10.707 kWh), Küresel Isınma Potansiyeli (143.993 kg CO2-eşdeğer) ve yüksek döngüsellik (%74) arasında bir denge sağlamaktadır. Bu çalışma, iyileştirme önlemleri ile işlev seçimini birleştiren kapsamlı bir yaklaşım sunarken, yeniden işlevlendirilen tarihi yapıları sosyal ve çevresel olarak dirençli yapılara dönüştürme potansiyelini ortaya koyarak, yeniden işlevlendirmenin sürdürülebilir kentsel gelişim için temel bir strateji olduğunu vurgulamaktadır. Anahtar Kelimeler: sürdürülebilir yeniden işlevlendirme, bütüncül metodoloji, enerji etkin tasarım, YDD, döngüsellik, toplumsal katılım
  • Doctoral Thesis
    Investigations of Indoor Thermal and Air Flow Conditions in a Tobacco Warehouse
    (01. Izmir Institute of Technology, 2023) Gerçek, Mümine; Başaran, Tahsin
    This study investigates the thermal performance and indoor environment conditions of naturally and hybrid ventilated industrial buildings. Numerical analyses and experimental measurements were conducted in a tobacco warehouse in İzmir, Turkey. Parametric analyses were performed with three different approaches: i) 15 architectural design strategies are evaluated by using a sensitivity analysis. It is found that roof insulation thickness, shading projection factor, and shading angle have significant impact on heating and cooling requirements. In addition, the most influential factors on operational CO2 emissions are thickness of insulation material and conductivity of thermal insulation material. ii) Vertical and volumetric temperature gradients, crucial for stored product quality, are assessed through field measurements and CFD simulations. Ceiling-mounted radiant cooling systems reduced indoor temperatures by 3°C, while floor heating systems increased temperatures by 7°C, ensuring a consistent range of 21- 25°C by providing a range at defined indoor temperature values. Maximum loads are determined as 12.9W/m2 for cooling and 39.6W/m2 for heating. iii) The air change effectivenesses of different ventilation conditions are analysed. Four additional fans improved air exchange quality and decreased the volumetric mean age of air (AoA) from 1230 to 525 seconds. It is indicated that, while additional fans may decrease the mean AoA, maximizing the fan operation capacities is not obligatory to achieve increased air change effectiveness. Besides, the analysis of various fan operation scenarios significantly improves indoor environment conditions and energy efficiency. This thesis emphasizes the importance of design parameters in influencing indoor environmental conditions and energy consumption. The investigation of thermal air mixing and conditioning strategies underscores the need for a combined experimental and numerical approach. The findings contribute to effective solutions for warehouses storing temperature-sensitive products, ensuring optimal storage conditions and mitigating temperature variations during logistics operations.
  • Doctoral Thesis
    Design and Analysis of Deployable Reciprocal Frames
    (Izmir Institute of Technology, 2022) Özen, Gülçin; Korkmaz, Koray; Korkmaz, Koray
    A reciprocal frame (RF) is a type of structure used since early times. It consists of mutually supporting bars that can span large distances greater than the length of the bar. Although there are deficiencies in previous studies, there are movable RFs, but we cannot talk about the existence of a 3-dimensional deployable RF network. This study aims to contribute to the missing knowledge for movable RF fans and develop a deployable RF network. The study has conducted a comprehensive literature review to gain knowledge and identify the deficiencies of RFs. There are many studies about RFs, but it has been observed that very limited research has been done on movable RFs, and some geometric properties have not been made yet. Firstly, missing geometric knowledge has been found, which are the positions and orientations of the joints by using Denavit-Hartenberg parameters. Also, the effect of engagement length on the fan height and base edge is analyzed. A reconfigurable demountable RF fan is created with the obtained geometric knowledge. Then, mobility calculations are made, and kinematic diagrams are drawn for zero, single, and multi degrees of freedom (DoF) triangular, quadrilateral, and pentagonal fans. Their motions are investigated, and 3-dimensional (3d) simulations are generated. A two DoF quadrilateral fan with prismatic and revolute joints is produced. Then the possibilities of assembling the two DoF fans are searched to create a deployable RF network. While the network has a single DoF in the direction of vault curvature, it has multi DoF in the thickness direction. The network takes the form of a roll in its most closed state, and it takes the form of a vault in its most open state. The section of the curvature of the deployable network is the same as the Da Vinci bridge. However, while simple joints were used in the Da Vinci Bridge, revolute and prismatic joints are used in the proposed deployable RF network.
  • Doctoral Thesis
    Altmann Linkage Networks and Light-Shelf Application With a Single Linkage
    (01. Izmir Institute of Technology, 2022) Atarer, Fulya; Korkmaz, Koray
    Today's understanding of architecture has revealed the need for structures that allow geometric form changes due to spatial and functional requirements. For this purpose, deployable structures have taken their place in architecture. These structures provide flexibility and multiple uses. While scissor mechanisms and bar mechanisms have been observed in architectural applications in deployable structures, over-constrained linkages have been used especially in recent studies of deployable structures. Over-constrained linkages make deployable structures more stable to loading. In this dissertation, the possibilities of systematically designing the single degree of freedom (DoF) networks using a kind of spatial overconstrained linkage called Altmann linkage as a basic module. The literature is investigated deeply that the conducted studies on network assemblies have been on different over-constrained linkages as a basic module, such as Sarrus, Bennett, and Bricard. There are few studies related to the Altmann linkage. None of these studies are in-depth studies to design a network based on the Altmann linkage. Also, an architectural application of the Altmann linkage has not been studied yet. This dissertation represents three main subjects: understanding the geometric properties of an Altmann linkage, designing one degree of freedom networks of Altmann linkage, and designing and analyzing an Altmann light shelf. Firstly, the geometry of the unit linkage is parameterized and its position kinematics is solved. Then, ten different single DoF Altmann networks are designed. By choosing one of the ten different networks designed, the network with folded and vault configurations is developed through assembly mode change. Afterward, light shelves are designed in Solidworks. Then, square and rectangular designs are compared in terms of their angles with the building and the west. Finally, daylight performance analyzes are made in the Relux software.