Energy, economic and environmental analysis of an evacuated tube solar collector using hybrid nanofluid
Document Type
Article
Publication Date
1-25-2023
Abstract
Hybrid nanofluids are novel advanced fluids that improve sustainable energy production. In the current study, the performance of the evacuated tube solar collector is experimentally investigated using hybrid nanofluids of magnesium oxide and multi-walled carbon nanotubes with water base. The experiments are carried out at various weight ratios and at three flow rates ranging from 1 to 3 L/min. The results show an improvement in the optical efficiency of the collector by up to 78.1% with the increase in the weight ratio of multi-walled carbon nanotubes nanoparticles. The average heat energy gain has increased from 240 W to 495 W. The utilization of the hybrid nanofluid shows an enhancement in the inlet–outlet temperature difference of the fluid by 56% and a reduction in the area of the collector by 36%. Economic and environmental analyses are conducted to investigate the role of magnesium oxide/multi-walled carbon nanotubes hybrid nanofluid in energy savings and CO2 emission reduction. The period for Carbon Payback Time and Simple Payback Period declines by 36.2% and 34.6%, respectively, for magnesium oxide/multi-walled carbon nanotubes (50:50) hybrid nanofluid. The Energy Yield Factor reaches 27.09 throughout the lifetime of the collector. According to the findings, magnesium oxide/multi-walled carbon nanotubes hybrid nanofluid is a viable working fluid alternative to multi-walled carbon nanotubes nanofluid that provides enhanced properties and a more economical raw material cost.
Recommended Citation
Henein, Shady M. and Abdel-Rehim, Ahmed A., "Energy, economic and environmental analysis of an evacuated tube solar collector using hybrid nanofluid" (2023). Mechanical Engineering. 53.
https://buescholar.bue.edu.eg/mech_eng/53