الفهرس 
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Abstract
Buildings today are becoming more and more advanced and the demands on building servicesare increasing. A modern building is expected to provide a number of services with highsecurity, energy efficiency and convenience. For a building with complex requirements due tothe activity, such as a hospital, the services provided are even more advanced and therequirements for them are higher. This implies the need of a building management system.These systems come with a cost and have some drawbacks.This thesis will take on the task to study how to benefit from, the possibilities with buildingmanagement systems while minimizing the energy consumption. The aim is to find guidelinesfor how to design a building management system in a hospital in an effective way.The thesis contains a theoretical part, describing the design parameters of HVAC systems ofsterile spaces in hospitals and the general architecture and functions of a buildingmanagement system. Further treated is the different technologies that supply this function andhandles communication.The last part of this thesis contains a case study, carried out at Fakoos Hospital, which islocated in Cairo, Egypt. The three energy management strategies (the Occupied Strategy, thecombination of Occupied and Unoccupied Strategy and the Fan Control strategy) will beillustrated. The first strategy (Occupied Strategy) saves energy by 10.92%. The secondstrategy (Occupied and Unoccupied Strategy) saves energy by approximately 23.08%. Thethird strategy (Fan Control Strategy) saves energy by approximately 27.03%. This thesis willshow that using two or three strategies can save more energy.In addition to the previous study, three potential malfunctions in the existing system (Fancontrol strategy) have been studied, and their effects on the energy consumption have beencalculated. Based on the calculations, the first of these (AHU heating coil and cooling coil areboth ON simultaneously) has been proven to increase the energy consumption by up to54.7%%, while the second (AHU supply-air temperature is lower during cold weather)increases the energy consumption by up to 4.9%. The third malfunction (The equipment#operates during unoccupied hours) increases the energy consumption by up to 4.4%.