Im, P.; Haberl, J.(IBPSA-USA (http://www.ibpsa.us), August 2010)
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Abstract:
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.