Strategies for a sustainable campus in Osaka University: Fid-Bau Portal

Strategies for a sustainable campus in Osaka University

Yoshida, Yukiko / Shimoda, Yoshiyuki / Ohashi, Takumi

Highlights•Strategies for a sustainable campus involve building categories on Osaka University.•A ZEB was applied to Osaka University Hall for Category I buildings in 2011.•The use of 24-h-operating equipment leads to high electricity consumption.•Osaka University achieved successful results using an ESCO in FYs 2012 and 2013.•Osaka University decreased energy use per unit in 2015 by 22% compared with 2010.

AbstractThis paper reports strategies toward achieving a sustainable campus at Osaka University, Japan. We advance a daily energy-use schedule for each building type to provide effective energy-saving strategies. We classify the facilities into three categories according to department type to reveal their energy-use patterns and identify their strategies for saving energy. These strategies will contribute to a sustainable campus using photovoltaic generation. Not only the implementation of energy-saving technologies but also the installation of renewable energy technologies will realize a sustainable campus at Osaka University. Category I (liberal arts) buildings have low energy density. The energy efficiency strategy for Category I is to develop zero-energy buildings by tuning the energy system to people's daily routines. Category II (science and engineering) buildings have high energy density. The energy efficiency strategy for Category II is effective energy conservation using the plan–do–check–act cycle. Category III buildings are large-scale facilities with experimental laboratories. The energy efficiency strategy for Category III is outsourcing energy management to an energy service company. Compared with fiscal year 2010, in 2015 Osaka University decreased energy use per unit floor space by 22%. It achieved these savings despite an increase in total floor area during that period.