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Published on: August 23, 2012
Carbon nanohorns-based nanofluids as direct sunlight absorbers
1CNR-INO National Institute of Optics, Largo E. Fermi, 6, 50125 Firenze, Italy. elisa.sani@ino.it
Optics Express
|April 15, 2010
Summary
Researchers explored nanofluids made from carbon nanohorns for solar devices. These fluids significantly improved sunlight absorption and heat transfer, boosting solar energy efficiency.
Area of Science:
- Materials Science
- Nanotechnology
- Renewable Energy Engineering
Background:
- Poor heat transfer in conventional solar fluids limits system efficiency and compactness.
- Developing advanced fluids is crucial for optimizing solar energy utilization.
Purpose of the Study:
- To investigate the optical and thermal properties of nanofluids containing single-wall carbon nanohorns.
- To evaluate their potential as sunlight absorber fluids in solar devices.
Main Methods:
- Preparation of aqueous suspensions of single-wall carbon nanohorns.
- Evaluation of optical properties, focusing on sunlight absorption.
- Measurement of thermal conductivity of the nanofluids.
Main Results:
- Nanofluids exhibited significantly higher sunlight absorption compared to pure water.
- The thermal conductivity of the nanofluids was found to be greater than that of pure water.
- Carbon nanohorns showed potential for chemical functionalization.
Conclusions:
- Single-wall carbon nanohorn nanofluids demonstrate promising optical and thermal properties for solar applications.
- These nanofluids can enhance the overall efficiency of solar energy exploitation devices.
- Further research into chemical functionalization could unlock additional performance benefits.
