Table 1 |
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Solar thermal nanofluid comparison table |
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|
Type |
Graphite |
Al |
Copper |
Silver |
Gold |
|
|
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|
Particle, vol.% |
0.0004 |
0.001 |
0.004 |
0.004 |
0.004 |
|
Commercially available |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Surfactant, vol.% |
0.5 |
0.25 |
0.25 |
0.25 |
0.25 |
|
1M NaOH, vol.% (achieve pH 9 to 10) |
0.003 |
0.003 |
0.003 |
0.003 |
0.003 |
|
Sonication time, min |
45 |
30 |
30 |
30 |
30 |
|
Collector depth, cm |
10 |
10 |
10 |
10 |
10 |
|
Approximate cost, $/L |
0.52 |
0.64 |
1.85 |
3.65 |
233 |
|
|
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|
Assumes pure water base - where water + stabilizers = $0.5/L). |
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|
Taylor et al. Nanoscale Research Letters 2011 6:225 doi:10.1186/1556-276X-6-225 |
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