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| Format: | Recurso digital |
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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.16538301 |
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Table of Contents:
- <p><span>This article provides a practical framework for calculating daily energy consumption of common household appliances and determining the number of 48V 100Ah batteries required to operate them efficiently in off-grid or backup power systems. The study focuses on typical appliances such as air conditioners (12,000 and 23,000 BTU), refrigerators, freezers, and electric treadmills, with power consumption estimates based on real-world usage patterns.</span></p> <p><span>Using a 48V battery system (typically composed of four 12V batteries connected in series, totaling ~4.8 kWh per set), the article introduces simplified calculations to estimate daily energy requirements. For example, running a 12,000 BTU air conditioner for 8 hours consumes approximately 9.6 kWh/day, requiring 2 to 3 battery sets. Similarly, a 23,000 BTU unit consumes up to 18.4 kWh/day, needing 4 to 5 sets. Other appliances such as refrigerators and freezers require 1 to 1.5 battery sets per day, depending on ambient temperature and usage conditions.</span></p> <p><span>The article also emphasizes the importance of over-provisioning (20–30%) to account for battery degradation, weather variations, and fluctuating load. It encourages integrating solar panels to improve system autonomy and recharge batteries during the day.</span></p> <p><span>By applying these calculations, households especially in rural or remote communities can design sustainable and resilient power solutions tailored to their daily needs. The content is based on field observations, real-time battery diagnostics, and government energy data from Thailand.</span></p>