Research Information System
Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, vol.40, no.1, pp.136-147, 2024 (Peer-Reviewed Journal)
A green campus is one of the important aspects of an ecological city.
Setting and infrastructure, energy and climate change, waste, water,
transportation, and education are major elements of a green campus. This
study focuses on water consumption and savings, which generally
involves a rainwater harvesting system. Erciyes University became the
third environmentally sensitive university in Turkey according to the UI
GreenMetric 2020–2021 ranking. While Erciyes University was ranked
142nd in the world in 2020, with a total score of 7175, it rose to 99th
place in 2021, with 7775 points. This paper investigates and describes a
rainwater harvesting method for Erciyes University. The total
harvestable water was calculated as the roof surface area × the average
annual rainfall × the loss coefficient. The loss coefficient was set as
0.75 considering the differences in roof forms. The floor areas of the
buildings were calculated based on data collected from geographic
information systems. The total harvestable water was calculated to be
64,635.432 m³ from the roofs in the campus area of Erciyes University.
Accordingly, it is possible to save approximately 7.55% of the annual
water consumption, saving 1,066,477 TL and supplying water to 7,181
people per year by harvesting rainwater from the roofs at Erciyes
University. It is concluded that the proposed rainwater harvesting
method help Erciyes University rank higher in the UI GreenMetric
ranking, contribute to the eco-city approach, and enhance campus
sustainability.