Energy Efficient Operation of University Hostel Buildings Under Indoor Environmental Quality Requirements

This paper investigates the influence of Indoor Environmental Quality [IEQ] requirements associated with occupation regimes on the criterion of energy demands for Heating, Ventilating and Air-Conditioning (HVAC) central systems installed in Cairo, Egypt. This paper focuses on the effects of occupation rate profiles with IEQ thermal parameters such as air dry-bulb temperatures and local air velocities. It is applied as a case study “10-Stories Hostel of 6000 m2 built-up area” that is utilized by immigrant students that migrate to Cairo for their University studies. They are termed here in this work as Egyptian Citizens [EC]. The occupation rate schedules and operation profiles for each source of heat inside space shall be incorporated to simulate the reality. These profiles and schedules should be added to the local energy code as a guideline for designers. Although in this case study the obtained results from simulation program match the total actual energy bills, sometimes, with multi-use apartments additional factors. The effect of Effective Temperatures [ET*] (temperature for constant thermal sensations) is vital as it can lead to reduce the cooling capacity by increasing the room temperature against indoor relative humidity for the same comfort sensation. These two concepts will save on the project total energy demand, in addition to introducing new design criteria for acceptable indoor conditions.