Photothermal properties and photothermal conversion performance of nano-enhanced paraffin as a phase change thermal energy storage material

Yang R., Li D., Salazar S. L., Rao Z., Arıcı M., Wei W.

SOLAR ENERGY MATERIALS AND SOLAR CELLS, cilt.219, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 219
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.solmat.2020.110792
  • Dergi Adı: SOLAR ENERGY MATERIALS AND SOLAR CELLS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Environment Index, Greenfile, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Nanoparticle, Nano-enhanced paraffin, Optical properties, Photothermal properties, Solar energy, OPTICAL-PROPERTIES, DIRECT ABSORPTION, HEAT-TRANSFER, THERMOOPTICAL PROPERTIES, SOLAR COLLECTOR, NANOFLUIDS, COMPOSITE, CARBON, WAX, NANOPARTICLES
  • Kocaeli Üniversitesi Adresli: Evet

Özet

The paraffin incorporation in device of glass envelope allows the thermal regulation, increasing the thermal comfort and energy efficiency of buildings. Addition of nanoparticles has an advanced application prospect in the field of solar energy collection and storage capacity of glass envelope systems filled with paraffin. The present study conducts an experimental and numerical investigation in order to study photothermal properties of the paraffin incorporated ZnO or CuO nanoparticles. An experimental and theoretical model is also established to analyze the effect of nanoparticles on the thermophysical and optical properties of nano-enhanced paraffin. The results show that due to the presence of the nanoparticles, the transmittance of nano-enhanced paraffin decreases. On the other hand, temperature increment results in a small rise in the transmittance of nano-enhanced paraffin. The results also indicate that the utilized nanoparticles exhibit a higher attenuation to light, and the scattering effect cannot be avoided, where the maximum scattering proportion is 6.3%. Improvements of 5.87 and 13.12% in thermal conductivity of nano-enhanced paraffin at the volume fraction of 5 x 10(-4) vol% are obtained using ZnO and CuO nanoparticles, respectively. The evaluation of the photothermal performance based on the temperature variations shows that the CuO/paraffin can absorb more solar energy. The optimum photothermal performance can be satisfied by the nanoparticle volume fraction ranging from 5 x 10(-4)to 1.5 x 10(-3) vol%.