Master Degree / Yüksek Lisans Tezleri

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

Browse

Filters

2002 - 200912010 - 201912020 - 20244

Settings

Has files: YesSubject: search.filters.subject.Architecture and energy conservation

Search Results

Now showing 1 - 6 of 6
  • Master Thesis
    Multi-Objective Optimization of Residential Buildings for Improving Indoor Thermal Comfort While Reducing Energy Consumption
    (01. Izmir Institute of Technology, 2024) Özyılmaz, Ece; Arsan, Zeynep Durmuş
    Son yıllarda yön gözetmeksizin yüksek cam-cephe oranı ile tasarlanan konut yapıları yaygınlaşmaktadır. Bu tasarım çözümleri başta aşırı ısınma olmak üzere, ısıl rahatsızlık ile yüksek enerji tüketimi ve soğutma yükü gibi sorunlara yol açmaktadır. Bu çalışmanın ana amacı, mevcut bir konut binasının enerji tüketimi ve ısıl konforu üzerinde en yüksek ve en düşük hassasiyete sahip tasarım değişkenlerini belirlemek ve enerji tüketimini azaltırken ısıl konforu iyileştiren optimum yenileme çözümlerini bulmaktır. Akdeniz iklim bölgesinde yer alan, 2019 yılında inşa edilmiş, güneye cepheli bir konut bloğu örnek olarak seçilmiştir. DesignBuilder'da oluşturulan model, saatlik iç mekan sıcaklık izleme verilerine göre sekiz aylık bir dönem için kalibre edilmiştir. Çalışma kapsamında belirsizlik ve duyarlılık analizi yapılmış, analiz sonuçlarına göre duyarlılığı düşük bulunan değişkenler dikkate alınmamıştır. NSGA-II algoritması kullanılmıştır. Altı adet iyileştirme senaryosu tanımlanmıştır: bina zarfı özelliklerini değerlendiren pasif olanlar, HVAC sistemi özelliklerini değerlendiren aktif olanlar ve ilk iki senaryoda alınan tüm tasarım değişkenlerini değerlendiren senaryolar. İlk üç senaryoda enerji tüketimini ve konforsuz saatleri en aza indirmek hedeflenirken, diğer üç senaryoda soğutma yükünü ve konforsuz saatleri en aza indirmek amaçlanmaktadır. Duyarlılık analizi sonuçlarına göre soğutma-ısıtma ayar noktası, gölgeleme tipi, sızma oranı, pencere duvar oranları her iki amaç fonksiyonu için de yüksek hassasiyete sahip değişkenlerdir. Isıtma sistemi çalışma takvimi, soğutma sistemi performans katsayısı, ısıtma sistemi verimliliği, iç duvar tipi ve pencere çerçeve tipi değişkenlerinin duyarlılığının düşük olduğu sonucuna ulaşılmıştır. Üçüncü ve altıncı senaryolarda her iki amaç fonksiyonunun da temel duruma göre azaldığı optimum çözümler bulunmuştur. Bu senaryolarda, aşırı ısınma problemi hem aktif hem de pasif çözümler değerlendirilerek çözülmüştür.
  • Master Thesis
    Optimization of cooling energy consumption and thermal comfort in existing residential buildings against climate change: A case study in Mediterranean climate
    (2023) Uçaryılmaz, Sedef; Arsan, Zeynep Durmuş
    The built environment is at risk of facing significant impacts due to climate change and extreme weather occurrences. An adverse consequence of climate change on the construction industry is the degradation of thermal comfort within buildings, leading to increased energy usage for air conditioning. Because existing residential buildings are unprepared for the future climate. The Mediterranean climate is one of the climate classes that will be mostly affected by the global climate, especially in terms of temperature increases. Yet, to access sensitive and accurate climatic data and find the best retrofit scenarios is problematic. Two IoT devices were used in this study to overcome this problem. This study aims to observe and minimize the energy consumption and thermal heat comfort of the flat on the ground floor of a 3-story residential building located in Aydın province, which has a Mediterranean climate, against climatic conditions. In the study, climate predictions for 2049-2050 and 2079-2080 were also made, and it was investigated whether the currently optimized building would remain optimized in future climate conditions. According to the results, while the cooling energy consumption of the currently optimized building decreased by 43% compared to the base case, it decreased by 25% according to the 2049-2050 climate predictions and by 8% according to the 2079-2080 climate predictions. There was no visible change in discomfort hours. In the separate optimization results for the 2049-2050 and 2079-2080 periods of the building, which could not remain optimized according to future climate conditions, a 30% and 21% decrease in cooling energy consumption was observed, respectively, compared to the base case. There was no visible change for discomfort hours. According to this study, it was concluded that the building should be re-optimized in future climate scenarios.
  • Master Thesis
    An Investigation Into the Building Performance Impact of Occupant Behavior Through Energy Simulations
    (2023) Demir, Rümeysa; İlal, Mustafa Emre
    The building industry greatly impacts worldwide energy consumption. Residential energy use is significant, making it a key area for energy efficiency and environmental concerns. Building simulation tools are used to predict energy consumption. One shortcoming of simulations that are employed is that building occupants are assumed to behave uniformly. This study explores the potential of including variability of occupant behavior in building simulation models and its impact on the accuracy and reliability of simulation results. Actual consumption data and energy simulation results are used in tandem to investigate this topic. The first phase involved a seven-week monitoring program in a dormitory where each room was equipped with an independent air-conditioning unit. The goal was to record and analyze electricity consumption that included this heating system. The second phase of the study explored occupant behavior. Each room was simulated using schedules representing three different behavior patterns: frugal, standard, and wasteful. Finally, simulation results are compared with actual data. The margin of error in the DesignBuilder standard scenario varies between 4% and 38%, while the average margin of error is 16%. In the frugal scenario, occupants could save 30% to 70% of their energy, with an average savings of 50% possible. For the standard scenario, rooms offer an average saving potential of 16%, and in the wasteful scenario, only one room offers a saving potential of 13%. The results of the study underlines the need for considering the variability in occupant behavior in simulation models.
  • Master Thesis
    Optimization of Energy Consumption and Thermal Comfort in Historic Buildings: Case Study of İzmir National Library Building, Türkiye
    (01. Izmir Institute of Technology, 2023) Özsavaşcı, Umut; Durmuş Arsan, Zeynep; Gökçen Akkurt, Gülden
    The 'library,' as a building type, is the visiting space of researchers and storage space of wisdom of past and present thinkers. Historic libraries host unique pieces of cultural heritage such as books, manuscripts, documents, maps, artifacts, paintings, sculptures, and frescos from the previous generations. The thesis aims to reduce energy consumption and improve occupants' comfort while paying attention to degradation risks of paper-based collections in the historic İzmir National Library Building, Türkiye. Thus, it examines building retrofit actions with different impact criteria and conducts the optimization tool to define the most optimal ones. First, three degradation risk assessment procedures were determined for the paper-based collections of the İzmir National Library Building. Within the scope of the thesis, the library building was monitored between 01.10.2016 - 01.10.2017. According to the results of the monitoring process, mechanical, chemical and biological degradation risk analyzes were carried out. The digital simulation model of İzmir National Library was prepared in DesignBuilder v. 7.0.0.102 software and calibrated monthly for a year via hourly air temperature data. Three retrofit optimization scenarios, i.e. neutral, low and high risk impact criteria, were defined by grouping different design variables such as glazing type, exterior door material, pitched roof floor construction, exterior wall construction, heating set point and cooling set point of HVAC system. The objective of optimization was reducing energy consumption and discomfort hours at the same time. The simulation results showed that all three retrofit actions reduced energy consumption and discomfort hours. Scenario 3 was the most successful among other scenarios, providing energy savings by 26.6% and reducing discomfort hours by 80.3%, according to the base case. Besides, there was no significant change in the degradation risk analyzes according to the base case.
  • Master Thesis
    Development of Intelligent Buildings and Their Impacts on Architecture in Turkey
    (Izmir Institute of Technology, 2002) Zağpus, Selin; Günaydın, Hüsnü Murat
    Related to every period.s life conditions the community.s needs show differences. Today.s people giving prior importance to business life and depending on this priority and the incoming intense, active life flow bring up the need of .facilitating life. and again one of the most main problems in today.s life described as energy loss is reduced by designing .energy conscious. buildings. At this point of view, developing technologic and construction sector take on the roles as two important inputs to help design concept. Considerably the technological developments that took place with .Industrial Revolution. started the use of machine power, created new bazaars and new work areas, and brought up the creation of new life styles with itself. With these points, this process came across the new trends in architecture and construction. Spreading use of information technologies, make differences in expectations about daily life standards. As men can adapt the changing needs and obtain maximum suitability, need buildings with minimum cost for usage and upkeep. The main aim of the buildings described as .intelligent buildings. is use of minimum energy and besides to obtain system works and comfort at an optimal level. To be considered as intelligent, building must; With these points, besides the advantages that intelligent buildings bring up, they can cause important problems to take place. With their electrical infrastructure they may cause the inhabitants to be abstracted from the outer life, and with respect the people working in multi-storey buildings have health problems like .building syndrome. or because of the computer aided structure of these buildings .accessibility. problems can occur. These problems come in the first places on the problems rank. In the solutions of the problems occurring by intensive use and by the way increasing demands, at the point architectural solutions become insufficient electro-mechanical systems join. For providing high life standards complete for today and tomorrow.s life, the buildings which are designed bye using series of technological solutions, are composed of the integration of these systems. All these developments, different than the conventional design process, need the information flow with the other science branches -interdisciplinary approach-. A building to be formed as intelligent by .architectural concepts., with a large proportion is related to the .architect.s intelligence.. In these terms architect must be following all new developments in technology. In other ways, intelligent buildings will be the buildings designed by engineers. Nearly in the past ten years, intelligent building applications are also seen in our country. But whether the lack of investigation about the abroad works or these buildings participated in our lives with the unnecessary ambition of consumption, so with these facts intelligent buildings cannot deserve their attribute. To state that a building is totally intelligent, from the design process, the project must be taken up as a total work with the sub-systems providing central supervision and administrating. But the approach in our country sees the sufficiency as a building that owns one of the named systems or any residence full of intelligent house products. Of course these terms are not enough for intelligence. As a result, this work examines the approach to the subject in our country by evaluating sub-systems of intelligent building concept, design criteria, the advantages and disadvantages of these buildings, and the degree of intelligence. Key words: intelligent building, building automation system, office automation system, telecommunications system, information technology, and energy conscious buildings.
  • Master Thesis
    Acoustic Design Based on Multi-Aspect Performance Analysis
    (Izmir Institute of Technology, 2013) Atça, Emre; İlal, Mustafa Emre
    In current architectural practice, architects, due to time and budget constraints do not analyse their designs and evaluate alternatives from the building physics perspective. They expect this analysis to be carried out by engineers. Unfortunately, engineers mostly get involved late in the design process, after many key decisions are already finalized, leaving them powerless to solve problems employing efficient strategies. However, the rapid advances both in computing and engineering have produced various simulation based tools for evaluating building performance that architects themselves can employ in the early design stages. The proliferation of the utilization of these tools throughout the architectural practice and education is necessary for achieving higher performance levels in the built environment. In this study, the main Lecture Hall at Izmir Institute of Technology, Department of Mathematics is diagnosed and documented through measurements and the possibility of predicting this existing level of performance through simulations during the design stage is explored. The brand new Lecture Hall is in urgent need of renovations, with additional costs, in order to improve acoustic, visual and thermal comfort in the space. Architects need to follow a performance based design approach where they consider performance criteria and utilize building simulation tools for design support in order to avoid problems that introduce costs later in the construction and operation of buildings.