טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentAmir Adi
SubjectDesign and Optimization of an Air-Conditioning System Based
on Nocturnal Radiative Cooling for Small-Scale
Data Centers: Thermal and Economic
Aspects
DepartmentDepartment of Mechanical Engineering
Supervisor Dr. Rene Van Hout
Full Thesis textFull thesis text - English Version


Abstract

The era we live in is characterized by exponential growth in both population and energy consumption per capita. These growths are predicted, by many researchers, to cause depletion of all fossil fuels in the near future. One of the approaches to solve the predicted energy crisis is sustainable energy. However, in our competitive world, sustainability must also be economically competitive in order to replace conventional technologies. Night Sky Radiative Cooling (NSRC) is a method of passive, sustainable, cooling. It harnesses the phenomenon that the sky temperature can be significantly lower than the ambient and therefore can be used as a heat sink for radiating heat. Here, a novel cooling system that is both sustainable and economical is presented. The system implements NSRC for small-scale industrial facilities rather than domestic use, as has previously been documented. Since reliability is a key issue in industrial applications, a hybrid system that included a heat pump was designed and a preliminary analysis showed its feasibility. A detailed thermal analysis taking into account actual meteorological conditions validated the working principles, simulated daily operation and evaluated performance. A simplified thermal analysis, that is capable of simulating multiple years and configuration with little computational resources, was implemented to allow for system configuration optimization such that for a specific site location the most cost effective system can be determined.