Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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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, GüldenThe '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 Retrofit Strategies for Energy Efficiency in Historic Urban Fabric: a Case Study in Basmane District, Izmir(Izmir Institute of Technology, 2018) Ulu, Meltem; Durmuş Arsan, ZeynepEnergy efficient retrofit of historic urban stock requires a methodical approach, comprehensive analysis and case-specific solutions. In large scale rehabilitation projects, the retrofit strategy should be developed on how to decide solutions for buildings providing the most energy saving in a short time. This paper presents a pilot study conducted at the neighborhood scale, consisting of 22 pre- and early-republican residential and contemporary buildings in a historic urban fabric of İzmir, Turkey. It aims to develop an integrated approach to identify case-specific energy efficient solutions for retrofit strategy of larger scale historic district. It utilizes building performance simulation (BPS) model, created through the documentation and quick field survey. All case buildings are grouped under three main categories considering their heritage value and building characteristics. Two retrofit packages and three individual operational solutions are constituted by considering five-leveled retrofit impact assessment of the CEN EN 16883:2017 Standard. Within the integrated approach, energy classes of the buildings are calculated regarding Building Energy Regulation of Turkey. Most-related two design parameters, S/V and ground floor area to conditioned volume ratio, on annual energy consumption of the buildings in current cases are identified by Pearson correlation analysis. The simulation results indicated that, three buildings including Building 8, 11 and 21 representing each group can initially be retrofitted. Building 11 has the most energy saving potential through Package 2 in its own group. For all buildings, while maximum energy saving was provided by Package 2 with 48,57%, minimum energy saving obtained from Package 1 with 19,8%.Master Thesis Optimization of Hvac Control Strategies by Building Management Systems Case Study: Özdilek Shopping Center(Izmir Institute of Technology, 2003) Canbay, Çağlar Selçuk; Gökçen Akkurt, GüldenHVAC systems in buildings must be complemented with a good control scheme to maintain comfort under any load conditions. Efficient HVAC control is often the most costeffective option to improve the energy efficiency of a building. However, HVAC processes are nonlinear, and characteristics change on a seasonal basis so the effect of changing the control strategy is usually difficult to predict.Aim of this thesis is to reduce energy consumptions by defining new HVAC control strategies and tuning control loops in Ozdilek Shopping Center "OSC". To investigate the potential for energy savings and to redefine control scenarios, an energy audit was carried out in "OSC". According to these studies new strategies are implemented by the help of existing building management system "BMS" without making any investment.Performance indices were calculated and compared with the accepted standards. Then normalized performance indices are calculated to reach out a better understanding of the buildings' efficiency.