Abstract
Recently, solar heating system has strongly been highlighted in the industry due to the carbon emission regulation. Multi walled carbon nanotubes have great heat absorption characteristics and excellent electrical conductivity in solar heating system. In this study, the distilled water and various of concentration of nanofluids have been adopted for a solar heating experiment. The difference of temperature was studied by using thermocouples in nanofluid. Furthermore, the electrical conductivity and UV light absorption of nanofluids were analyzed to evaluate their performance. The results of these analyses showed that the higher the concentration, the better heat transfer characteristics and electrical conductivity.
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