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 Investigation of the Indoor Microclimate of Historic Agios Voukolos (aziz Vukolos) Church in İzmir To Determine and Imporve Thermal Comfort Conditions(Izmir Institute of Technology, 2022) Akın Yalçın, Damla; İpekoğlu, BaşakThe conservation of the historical building by improving the thermal comfort conditions contributes to the reuse of the buildings. Besides thermal improvement, the authentic values of the historical building should be taken into consideration. The aim of this thesis is to examine the effects of indoor microclimate characteristics of historic Agios Voukolos Church on the occupants and the wall paintings of the building, and to bring improvement suggestions that consider the values of the historical church by evaluating the thermal comfort conditions. The method of the study consists of on-site examination, on-site measurements of microclimate parameters, calculations and surveys. Air temperature, relative humidity, air velocity and mean radiant temperature measurements were conducted. In order to determine thermal comfort level, Predicted Mean Vote (PMV)–Predicted Percentage Dissatisfied (PPD) method developed by Fanger (1967, 1970) was used and survey studies were carried out during activities in winter. The threshold values specified in the ISO 7730:2005 and EN 16798-1:2019 standards were taken into account. According to the calculations, it was understood that the occupants felt warm in July and August, and cold in November through March. Survey study conducted in winter also confirmed that occupants are not satisfied with thermal comfort conditions. Additionally, respective UNI 10829:1999 standard and the decree published by the Italian Ministry of Culture in 2001 were used to determine the effect of indoor microclimate on wall paintings and ornaments. As a result, secondary glazing system, nighttime ventilation and radiant heaters were suggested for thermal improvement.Master Thesis Thermal Comfort Analysis of Historical Mosques, Case Study: the Ulu Mosque, Manisa, Turkey(Izmir Institute of Technology, 2019) Diler, Yusuf; Gökçen Akkurt, Gülden; Turhan, CihanMosques are sanctuary places for Muslims where they can communicate with each other and perform their religious activities. Mosques differ from other building types in terms of occupancy period during a day with their unique function and intermittent operating schedule. Historical mosques with cultural heritage value, contain lots of artworks and represent Turkish culture for centuries. These mosques are originally built and serve without heating, cooling and mechanical ventilation systems. In this thesis, a systematic approach on monitoring and evaluating the microclimate and thermal comfort of historical mosques has been developed. This approach consists of two phases: detailed data collection and developing a dynamic building energy model. As a case study, The Ulu Mosque was monitored between 2015 and 2018. Thermal comfort evaluation of the mosque during worship periods were conducted based on the method provided by EN ISO 7730 standard. A dynamic Building Energy Performance Software, is used to model the mosque, and the model was calibrated by hourly indoor temperature data. The calibrated model, which meets ASHRAE 14 requirements, is used to develop retrofitting proposals. Thirteen different scenarios were proposed to improve thermal comfort during worship periods. The results were then evaluated according to EN 16883 standard in terms of the conservation of cultural heritage. Electric radiator heating with intermittent operating schedules was obtained as the best options to protect cultural heritage, while decreasing dissatisfaction level from 45% to 10% in winter months. Additionally, comparing with continuous operating schedule, intermittent operation saves 46.9% energy.Master Thesis Adaptive Thermal Comfort Analysis of Historic Mosque: the Case Study of Salepçioğlu Mosque, Izmir, Turkey(Izmir Institute of Technology, 2016) Bughrara, Khaled S. M.; Durmuş Arsan, Zeynep; Gökçen Akkurt, GüldenMosques differ from other types of buildings by having intermittent operation schedule. Due to five prayer times per day throughout the year, mosques are fully or partially, yet periodically, occupied. Historic mosques, possessing cultural heritage value, need to be evaluated in terms of thermal comfort. The adaptive thermal comfort method presented by ASHRAE 55 is recommended to be used to analyze thermal comfort conditions of unconditioned buildings. The aim of research is to analyze thermal comfort conditions of historic mosques throughout the year, and to conduct an adaptive comfort analysis. The selected Salepçioğlu Mosque was built in 1905 in Kemeraltı, İzmir, Turkey. The objective is to improve indoor thermal comfort levels by applicable interventions with specific attention to its heritage value. First, indoor and outdoor microclimate of Salepçioğlu Mosque was monitored from October 2014 to September 2015. The physical model of mosque was created via dynamic simulation modelling tool, DesignBuilder v4.2. The model was calibrated by comparing simulated and measured indoor air temperature within hourly error ranges defined by ASHRAE Guideline 14. Whole-year thermal comfort analysis was conducted on monthly basis by using adaptive thermal comfort model. The adaptive comfort analysis of monitoring campaign shows that the Mosque does not satisfy acceptable comfort levels. Different scenarios were applied to better comfort levels. The best improvement is obtained with underfloor heating by which discomfort hours drop into 1369 hours by 31.34%, while it was 3760 hours by 86.08% in the baseline model.