טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentGoldberger Itamar
SubjectDevelopment of a Methodology and Database for Energy
Conscious Design of School Buildings while
Withstanding in Thermal Comfort and
Indoor Air Quality Demands
DepartmentDepartment of Civil and Environmental Engineering
Supervisor Professor Rachel Becker


Abstract

The purpose of this research is to develop a methodology for establishing recommendations for energy conscious design of school buildings while ensuring thermal comfort and indoor air quality, and to demonstrate it on schools in the mountainous climatic zone of Israel.   

The first stage consists of investigating the constructional factors affecting school building thermal performance. At this stage outside fresh air is driven directly into the classrooms in order to ensure adequate indoor air quality. At the end of this stage recommendations were established for energy efficient school building design. In the next stage, methods were checked for energy efficiency improvement by using smarter ventilation patterns.

The main contribution of this research is in creating a methodology and database for energy conscious design of school buildings. Forecasts show that energy consumption for school buildings' air conditioning will reach half of the electrical energy consumption of these buildings.

The present research is divided into four main sections:

The First summarizes the international literature related to energy conservation in school buildings and the ways to ensure indoor air quality within them.

The second treats the characterization of the "e e eeeeeenergy preferred school building" by investigating ten constructional design factors of schools basic module using computerized dynamic thermal simulation of a typical school building module. The analysis provides detailed and annual electricity demand.

The third includes an investigation of the "energy cost" of indoor air quality assurance in school classes, and of the influence of night-time ventilation on energy saving.

The fourth consists of investigating the influence of complex ventilation patterns which include air channeling through different paths during the day and night periods, as well as during the winter and summer seasons.

This research proves that by using smart ventilation patterns it is possible to design school buildings that ensure indoor air quality, thermal comfort and proper lighting conditions, while conserving energy and lowering electricity demand. Moreover, it is shown that a school designed and operated to ensure indoor air quality by using complex air ventilation patterns can be more energy efficient than a school with the same architectural plan that does not provide indoor air quality. This is a far-reaching conclusion, especially in view of the common working premise that ensuring indoor air quality at the presently required levels causes an unjustified increase in energy demand.