Performance of Water in Glass Evacuated Tube Solar Water Heater under Kenya Climatic Condition
Computational Water, Energy, and Environmental Engineering(2021)
Abstract
Solar water heaters which provide a cost-effective and environmental friendly approach to hot water generation are in widespread application.Evacuated tube solar water heaters perform better than flat plate solar water heaters as a result of their greater surface area exposed for sunlight absorption.Water-in-glass evacuated tube solar water heaters are widely used as compared to heat-pipe solar water heaters due to their short payback periods.In this study, the performance of water-in-glass evacuated tube solar water heater is investigated through experiments under the climatic conditions in Kenya.The results revealed a daily efficiency range of 0.58 -0.65 and a daily final outlet temperature greater than 55˚C given an initial temperature of 25˚C.
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Solar Thermal Collectors
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