FINANCIAL BENEFITS OF POTENTIAL RAINWATER HARVESTING SYSTEM INITIATIVE FOR HOSTEL
DOI:
https://doi.org/10.21837/pm.v23i39.1916Keywords:
financial benefits, Higher Education Institution (HEI), hostel, sustainable initiative, Rainwater Harvesting System (RWHS)Abstract
Higher Education Institutions (HEI) have been considered ‘small cities’ with various buildings, services, and activities. Proposing a Rainwater Harvesting System (RWHS) in the HEI environment is an initiative towards greening the campus as well as action toward achieving global targets of Sustainable Development Goal (SDG) and UI GreenMetric World University Rankings. Thus, a study on the potential RWHS is required to obtain the financial benefits of RWHS installation and investment. This research focuses on the potential of RWHS for hostel buildings at one of the HEIs in Malaysia, i.e., Politeknik Sultan Azlan Shah (PSAS). PSAS was selected to promote polytechnics as a sustainable, superior, and excellent way to implement green elements at the site and across the curriculum in the Polygreen Blueprint. This research objective is to evaluate the financial benefits of potential RWHS as a sustainable initiative for hostel buildings in terms of Reliability (R) and Payback Period (PBP). Data collected from related documents are used to simulate calculation for R and PBP. The daily water mass balance model was adopted in the simulation process to obtain the financial benefits of RWHS. For hostel buildings, the RWHS initiative could potentially benefit in terms of finances with PBP from 23 to 26 years if 10 m3 to 30 m3 capacity High-Density Polyethylene (HDPE) water storage is installed. The R of the RWHS is between 63.14% to 74.52% with 30 years of lifespan. This study focuses on PBP, which considers local conditions that limit result generalizability.
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