Long-Term Experimental Performance of a PV–Battery-Powered Air-Conditioning System for Tropical Tourism Accommodation

Solar Energy Advances Pub Date : 2026-01-01 Epub Date: 2026-07-13 DOI:10.1016/j.seja.2026.100143

Made Ery Arsana, I Dewa Made Cipta Santosa, I Gusti Agung Bagus Wirajati, Luh Putu Ike Midiani, Pande Putu Agus Santoso, Yudhy Kurniawan, Takahiko Miyazaki

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Abstract

This study presents a long-term experimental performance analysis of a photovoltaic (PV)–battery-powered air-conditioning (AC) system operating in a tropical tourism accommodation simulator where cooling load represents the primary energy demand. The experimental system consisted of a 1.74 kWp monocrystalline PV array, a 3.6 kW hybrid inverter, a 5.12 kWh LiFePO₄ battery, and a fixed-speed split-type air-conditioning unit with a cooling capacity of 7000 BTU/h serving as the primary cooling load. System operation was continuously monitored over six months, from October 2024 to March 2025, using an IoT-based monitoring platform for real-time data acquisition and long-term operational observation. The results indicate that the PV–battery-powered cooling system achieved an average PV Energy Utilization Ratio (EUR) of 83.64%, with all monthly values remaining above 80%. The highest EUR was recorded in January 2025 (90.36%), while the lowest occurred in March 2025 (80.33%) due to reduced solar availability during the rainy season. Monthly surplus PV energy ranging from 13.9 to 27.5 kWh suggests opportunities for additional load integration or expanded battery storage capacity. Battery performance tests conducted after six months of operation demonstrate that the LiFePO₄ battery reliably supported nighttime air-conditioning operation for approximately 9–10 hours while maintaining a minimum State of Charge (SoC) of 20%. The experimental results demonstrate stable long-term operation and reliable battery-supported cooling performance under tropical conditions.

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热带旅游住宿用光伏电池空调系统的长期实验性能

本研究介绍了在热带旅游住宿模拟器中运行的光伏（PV）电池供电空调（AC）系统的长期实验性能分析，其中冷负荷代表主要能源需求。实验系统由1.74 kWp单晶光伏阵列、3.6 kW混合逆变器、5.12 kWh LiFePO₄电池和制冷能力为7000 BTU/h的定速分体式空调机组作为主冷负荷组成。从2024年10月至2025年3月，利用物联网监控平台对系统运行进行了为期6个月的连续监测，实时数据采集和长期运行观测。结果表明，光伏电池供电制冷系统的平均光伏能源利用率（EUR）为83.64%，月平均值均保持在80%以上。EUR的最高记录出现在2025年1月（90.36%），而最低记录出现在2025年3月（80.33%），原因是雨季期间太阳能可用性减少。每月剩余光伏能源从13.9到27.5千瓦时不等，这意味着有机会进行额外的负载整合或扩大电池存储容量。运行六个月后进行的电池性能测试表明，LiFePO₄电池可靠地支持夜间空调运行约9-10小时，同时保持20%的最低充电状态（SoC）。实验结果表明，该系统在热带环境下长期稳定运行，具有可靠的电池支持冷却性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy Advances

CiteScore

4.00

自引率

0.00%

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