Effect of Aluminium Heat sinks on the temPerature reduction and electrical efficiency of monocrystalline solar panels
DOI:
https://doi.org/10.47672/ejps.1020Keywords:
heat sink, passive cooling method, solar cell temperature, fill factor, efficiencyAbstract
High temperatures could hinder the effective working of solar panels and negatively impact on their performance. This research employed the passive cooling method using aluminium heat sinks with diagonal and vertical fins with holes attached to the back of two monocrystalline solar panels to reduce their surface temperatures. While the vertical-fins heat sink produced a temperature reduction of 2.48 (5.9 %), the diagonal- fins heat sink only provided a temperature reduction of 1.25 (2.9 %). The short circuit current ( of the solar panels reduced at high temperatures and so did their fill factors (FF) and efficiencies. The highest efficiency of 6.8 % was for the module with the vertical-fins and holes while the lowest efficiency of 4.7 % was for the module with no heat sink. The module with the diagonal-fin heat sink had an efficiency of 6.5 %. This study confirms that heat sinks can provide some level of cooling for solar panels in order to improve on their electrical efficiencies.
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