Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Lontar Physics Today
Emerita Setyowati
Department of Physics, Faculty of Science and Computer Science, Universitas Kristen Immanuel

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Performance Assessment of a Solar Water Pumping System Under High-Head Conditions in Sumba, Indonesia Emerita Setyowati; Anita Yuan; Shanti Dharmawanti
Lontar Physics Today Vol. 5 No. 1: February 2026
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v5i1.354

Abstract

A 2.4 kWp Solar Water Pumping System (SWPS) was installed in Kadaghu Tana, South West Sumba, to provide clean water from a total head of 115 m. The site receives 4.8-6.0 kWh/m2/day of solar irradiation. The system uses Photovoltaic (PV) modules connected to a Lorentz DC pump through an MPPT controller. Performance was evaluated through simulation and field monitoring. Key parameters assessed were flowrate, hydraulic energy, wire-to-water efficiency, motor efficiency, and daily pump operating hours. The pump operated 07.00–16.00 WITA, slightly earlier than the simulated 08.00 start time. The average monitored flowrate (1.07 m³/h) closely matched the simulated value (1.08 m³/h). Monthly average output was 10.75 m³ (monitoring) versus 10.83 m³ (simulation). The PV system produced 7.34 kWh/day, yielding a yield factor of 3.06 kWh/kWp/day. Hydraulic energy output was 3.31 kWh/day, resulting in overall system efficiency of 26–30%, consistent with typical Lorentz DC pump performance. System performance aligns well with simulation predictions. Operation is strongly influenced by irradiance, ambient temperature, total dynamic head, and well characteristics. The SWPS demonstrates reliable performance for remote clean-water supply in Sumba.
Co-Authors Anita Yuan Shanti Dharmawanti