Improvement of Heat Pipe Solar Collector Thermal Efficiency Using Al<sub>2</sub>O<sub>3</sub>/Water and TiO<sub>2</sub>/Water Nanofluids

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left" rowspan="2">Tank</td><td class="align_center">Stem</td><td class="align_center">Black sheet, 2 mm</td></tr><tr><td class="align_center">Insulation</td><td class="align_center">Rock wool, 50 mm</td></tr><tr><td class="align_left" rowspan="2">Safe</td><td class="align_center">Stem</td><td class="align_center">Galvanized sheet, 0.45 mm</td></tr><tr><td class="align_center">Insulation</td><td class="align_center">Rock wool, 60 mm</td></tr><tr><td class="align_left" colspan="2">Absorber</td><td class="align_center">Copper plate, 0.5 mm</td></tr><tr><td class="align_left" colspan="2">Absorber surface</td><td class="align_center">Matte black</td></tr><tr><td class="align_left" colspan="2">Top cover</td><td class="align_center">Glass, 4 mm</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Technical characteristics of the collector.</div>

International Journal of Photoenergy

tab4

Table 4

Table 4: Improvement of Heat Pipe Solar Collector Thermal Efficiency Using Al<sub>2</sub>O<sub>3</sub>/Water and TiO<sub>2</sub>/Water Nanofluids 

International Journal of Photoenergy

Improvement of Heat Pipe Solar Collector Thermal Efficiency Using Al2O3/Water and TiO2/Water Nanofluids

Table 4

Improvement of Heat Pipe Solar Collector Thermal Efficiency Using Al₂O₃/Water and TiO₂/Water Nanofluids