טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
Ph.D Thesis
Ph.D StudentShashua-Bar Limor
SubjectDevelopment of an Integrative Model for Evaluation of
Vegetation Effects on the Climate
of an Urban Space
DepartmentDepartment of Architecture and Town Planning
Supervisors Mr. Milo-Emil Hoffman
Professor Igal Tzamir


Abstract

Interest in urban microclimate modeling including the effects of vegetation in small wooded sites is quite recent. The present work studies the urban microclimate formation through modeling the levels of the system's control variables, including vegetation effects.

The study comprises three stages: empirical, analytical and implementation. The results of the study are presented in the Thesis through seven published papers.

The empirical stage was conducted on eleven green sites with trees representing a variety of urban green areas. The analysis yielded satisfactory results as regards the vegetation effects within the sites and to their effect on the immediate surrounding areas outside the site. This stage ignored the interrelationship effects of vegetation with the urban built-up variables.

In the second stage, the mechanism of the microclimate formation and the interrelationship effects among the system's variables were studied through the analytical Green Cluster Thermal Time Constant (CTTC) model, developed for this purpose. The model was validated through measurements in situ in sites with trees and lawns. It can be used to assess the diurnal thermal impacts of a proposed building design on its microclimate.

The third stage deals with the implementation study for practical use in urban planning. The method used for this purpose was derived by the use of multiple regression analysis of measured in situ effects and on simulated effects in four generic built forms of streets and courtyard houses with and without vegetation and colonnades. The proposed statistical procedure provides a useful tool for strategic planning in passive cooling of urban open spaces.