Phd Degree / Doktora

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Access Right: Open AccessAuthor: search.filters.author.Saygın, Nicel

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  • Doctoral Thesis
    Application of Exergy Analysis Method To Energy Efficient Building Block Design
    (Izmir Institute of Technology, 2014) Mert, Yelda; Saygın, Nicel; Saygın, Nicel
    This dissertation introduces the exergy analysis method into urban planning field in order to find out the amount of energy that can be conserved in a building block when energy efficient design is applied. Two hypotheses are developed here: 1. Exergy analysis is a suitable tool for the built environment, and 2. Energy efficient design parameters provide energy saving in the built environment. A case study approach is undertaken in order to test the hypotheses stated above. To do this, first, the energy efficient design parameters have been derived from the literature and design alternatives are developed accordingly; second, data has been gathered from the case area for the exergy calculations; third, exergy analysis of existing building blocks and proposed design alternatives are carried out, and finally, the amount of decrease in the exergy loss due to energy efficient design is found out. The findings in this study show that the exergy efficiency of the existing building blocks is nearly 2 %, while the proposed design alternatives are nearly 10-11 %. The overall exergy loads of the alternative plans are found as 166.3W, 225.1W, 142.5W, 137.8W and 184.8W respectively for winter and 105.4W, 140.0W, 89.9W, 86.3W and 125.3W respectively for summer on a housing unit basis. These results are much better when compared to the existing situation per housing unit which is 1079W (winter) and 1173W (summer). The best alternative energy efficient planning and design brings 1631 W (winter) and 2810W (summer) of exergy saving that corresponds to 799 TL/year and 978 kg/year reduction in CO2 greenhouse gases emission per housing unit. This data shows that the expected results and are in harmony with the literature. As a result, the suitability and importance of the exergy analysis on the built environment is proved by revealing the energy conservation and sustainable use of energy through using energy efficient design parameters.
  • Doctoral Thesis
    Secure Urban Environments by Design:analysis of Konak Square Design Through"crime Prevention Through Environmental Design (cpted) Princioples
    (Izmir Institute of Technology, 2007) Deniz, Deniz; Saygın, Nicel
    Better design can play a crucial role for reducing crime and creating secureurban environments. In this regard, planners and designers have begun to acknowledge the importance of Crime Prevention through Environmental Design (CPTED).However, unlike foreign countries, crime prevention through planning and design context has not been considered and integrated with the planning and design studies in Turkey.This study is aimed to fill this vital gap. Therefore, the main purpose of the study is to examine the relationships between crime (as well as fear of crime) and the spatial built environment. To do that, as one of the recently redesigned public space of zmir, Konak Square Design has been analysed through CPTED principles. In that case,a comparison of recent design of Konak Square and CPTED principles are carried out.Then, if design features of the square complies with CPTED principles or not, found out. Finally, additional recommendations are made that have not been covered by existing CPTED principles to improve security considerations of public places.For this purpose, interviews have been conducted with the zmir Police Department and also the official crime records of the area have been obtained from them. Besides using cross-correlation technique, systematic observations and questionnaires have been used as research methods of this study.Consequently, this particular study did find support for the causal relationships between the occurrence of crime or feelings of insecurity and characteristics of the spatial built environments. Therefore, the study has emphasized that, planning and design issues should be considered carefully in order to create safer and livable public spaces.