อุปกรณ์ ผลการทดลองแสดงให้เห็นว่าdevices. The experimental results indicated that the
nanoSWCNHs ฮันnanoSWCNHs has considerably higher sunlight absorption. Han
et al, [13] et al. [13] investigated the photothermal properties, optical
แสงคุณสมบัติพฤติกรรมการไหลและการนำความร้อนของคาร์บอนproperties, rheological behaviors, and thermal conductivities of
nanofluids the carbon black aqueous nanofluids. The experiments showed
that nanofluids had better solar energy adsorption properties.
Yousefi et al. [14e16] performed the experiments of efficiency of
a flat-plate solar collector with Al2O3eH2O and MWCNT-H2O
nanofluids as the working fluid respectively. The results show
that the efficiency of solar collector can be enhanced by 28.3%
with 0.2 wt% Al2O3 nanofluid than that of pure water. The dose of
surfactants in MWCNT-H2O nanofluids can affect the efficiency of
solar collector. The more differences between the pH of nanofluids
and pH of isoelectric point cause the more enhancement in
the efficiency of collector. Mao et al. [17] performed the experiments
of efficiency of a direct absorption solar collectors used
carbon-coated copper water-based nanofluids. The results show
that the efficiency of solar collector is reach to 74.69%. Mu et al.
[18] investigated the radiative properties and the thermal performance
of direct solar absorbers using SiO2, TiO2and ZrC
aqueous solution. The results show that the solar absorbance of
ZrCeH2O nanofluids is superior to that of SiO2eH2O and
TiO2eH2O nanofluids. Mercatelli et al. [19] investigated the absorption
and scattering properties of nanofluids consisting in
aqueous and glycol suspensions with single-wall carbon nanohorns.
The results show that SWCNHs-based nanofluids have
considerably higher sunlight absorption ability with respect to
the pure base fluids. The fraction of the power stored in SWCNHswater
nanofluids is higher than that of SWCNHs-glycol nanofluids
with the same volume fraction. Later Mercatelli et al. [20]studied
the spectral scattering albedo of SWCNHs, the results indicate
that the scattering albedo of SWCNHs was not higher than 5% for
red and NIR wavelengths. Kameya et al. [21] investigated the
radiation absorption characteristics of a Ni nanoparticle suspension.
They concluded that the absorption coefficient of the
nanoparticle suspension is much higher than that of the base
liquid for visible to near-infrared wavelengths. Lee et al. [22] used
gold-nanoshell (GNS) nanoparticles with different SiO2 core sizes
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