Ph.D Thesis

Ph.D StudentZohar Ruth
SubjectMathematical Model for Decision Making for Energetic Retrof
DepartmentDepartment of Architecture and Town Planning
Supervisor PROFESSOR EMERITUS Edna Shaviv


The objective of this study was to develop a decision making model whereby climatic conditions of residential buildings may be improved with maximum saving of non renewable energy.

A mathematical model was developed to serve as a computerized architectural design tool accompanying the architect in the various stages of designing energetic retrofit of a residential building. The proposed energetic retrofit is based on principles of conservation of energy and on passive absorption solar energy systems.

In order to develop the model, the factors affecting the decision making process were identified and characterized.

The interrelations among the decision and environmental variables are presented mathematically and their mutual influences are examined. The solutions for retrofitting residential buildings are tested according to climatic or economic criteria and to constraints defined by the user.

Optimal architectural solutions proposed by the model are designed with regard to the existing building, the environmental climatic conditions and the resident’s life-style, preferences and financial possibilities. The feasible solutions included in the model are based on previously tested efficient design precedents.

Preliminary results of the model run-in indicate a predicted climatic benefit and economy. The results also reveal the models’ high sensitivity to changes in design parameters.