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All Journal Jurnal IPTEK
Putri, Afriza Cahya
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering

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Identification of Energy Costs in The Gowongan Water Supply System of Perumda Air Minum Tirta Moedal, Semarang, Indonesia Putri, Afriza Cahya; Masduqi, Ali; Suryanto, Suryanto
Jurnal IPTEK Vol 29, No 2 (2025): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i2.7899

Abstract

Energy use in water supply systems has drawn increasing attention, especially in areas relying on pumps. This study evaluates the E4 pumps system at the Gowongan Water Supply System (SPAM) by Perumda Air Minum Tirta Moedal Semarang City, conducted in April 2025. Real-time measurements were taken using an ultrasonic flowmeter and a digital power meter. The analysis covered pump efficiency, Specific Energy Consumption (SEC), and electricity usage during peak (WBP) and off-peak (LWBP) hours, based on Ministry of Energy Regulation No. 7/2024. The results showed a pump efficiency of 60.3% and an SEC value of 0.221 kWh/m³. Over 83% of electricity was consumed during off-peak hours, indicating the effectiveness of the Variable Speed Drive (VSD) implementation. The audit also recommends optimizing pump operation schedules and exploring alternative energy sources as strategies to improve operational efficiency.  
Co-Authors Ali Masduqi Suryanto Suryanto