טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentMarianna Dorfman
SubjectClimatic and Energy Aspects of Hotel Design in Israel
DepartmentDepartment of Architecture and Town Planning
Supervisor Dr. Yezioro Abraham
Full Thesis text - in Hebrew Full thesis text - Hebrew Version


Abstract

This research examines the impact of various design parameters on the thermal behavior of the hotel rooms and explores the most efficient way to achieve a significant reduction of energy consumption in hotel buildings.

Guidelines for the design of energy saving hotels were developed in this research in accordance with the prescriptive approach for four climatic zones in Israel. An energetic rating system was proposed according to the impact of each design parameter and recommended values for those parameters were determined.

In order to examine the building thermal behavior different parameters were taken into consideration: architectural (proportion, orientation, external envelope color, envelope type, window area, glazing type, dynamic shading, fixed external shadings) and non architectural (infiltration, insulation, ventilation). A total of 11 design parameters, which comprised 107 different variables, were examined. At first, optimization tests were carried out for standard solutions. The optimized results were too good, making difficult to see the impact of each parameter on the total energy consumption of the building and to formulate design guidelines As a result, basic solutions were put together, leading to a significant reduction in energy consumption in comparison to the current situation. At the same time, they allow us to formulate guidelines for the prescriptive method. Most of the parameters for these solutions were set as constant based on values which were chosen after thorough evaluations. The following parameters were left free: climate zone, main facade orientation and hotel type. Overall, 128 basic solutions were set. Sensitivity analysis was carried out for all the basic solutions and the results were presented graphically.

Eventually each individual basic solution's improvement was calculated. The maximal improvement achieved using components reducing the building's energy consumption was calculated as well.

Based on the tests above mentioned for climate zone A, it is possible to achieve 52% energy saving compared with standard solution while using the defined basic solution. However, improving several buildings' parameters can achieve an energy saving of 80%. In climate zone B the achievable energy savings are 52% - 81%. In climate zone C 53% - 82% and in climate zone D 52% - 78%.

Examination of the absolute and the relative impact of various design parameters in the four climate zones in Israel have showed that the most important parameters in all zones are the orientation of the main facade, the area of the window, the glazing type and the drape type.