ANALYSIS OF THE ENERGY SAVINGS POTENTIAL IN K-5 SCHOOLS IN HOT AND HUMID CLIMATES: APPLICATION OF HIGH PERFORMANCE MEASURES AND RENEWABLE ENERGY SYSTEMS
Piljae Im, Jeff S. Haberl
This paper presents the analysis of the energy savings potential in an existing K-5 school in hot and humid climates. Previous paper (Im and Haberl 2008b) presented a calibrated simulation procedure for an existing K-5 school in hot and humid area, and the first step of the energy savings potential analysis by applying the energy savings measures recommended as in the ASHRAE Advanced Energy Design Guides for K-12 Schools. As an effort to investigate more energy savings potential for the school building, several other energy savings measures and renewable energy measures were applied to the target building. Those measures include: increased glazing U-value, VFD application for the HVAC system, cold deck reset, variable speed for pumps, high-efficiency boiler, skylights, and the application of solar thermal and PV systems. The final simulation results show that the estimated Energy Use Index (EUI) of the school by applying all the measures but the solar thermal and PV systems would be 29.9 kBtu/sqft (i.e., 38.6 % energy savings against the baseline school). In addition, solar thermal and PV systems were designed to provide half of the electricity demand and all the SWH demand of the school building, respectively. The final EUI for the school with the solar thermal and PV systems was estimated to be 15 kBtu/sqft.
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