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August 15, 2025Journal of Energy SystemsOpen Access

Development and performance evaluation of indigenous flat plate solar water heating systems under Kenyan climatic conditions

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Authors

SKSarah KwachKenyatta UniversityTTThomas ThoruwaPwani UniversityMMMary MakokhaKenyatta University

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Implication

Observational analysis measured thermal efficiency in three solar water heaters, indicating cost benefits for local materials.

Key Points

  • The aluminum-based solar water heater had a thermal efficiency of 32.8%, while the copper-based collector was slightly higher at 34%.
  • Over three months, maximum outlet water temperatures were 74.1°C for aluminum, 69.4°C for galvanized steel, and 78.7°C for copper.
  • Testing conducted under Kenyan climatic conditions underscored differences in performance among the materials used for collectors.
  • Cost-effective solutions like the galvanized steel collector could encourage local adoption of solar technology compared to conventional sources.

Cite This Study

Kwach et al. (2025) studied this question.

synapsesocial.com/papers/68af56faad7bf08b1eadd10chttps://doi.org/10.30521/jes.1512933
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