Thermal Conductivity and Photothermal Conversion Performance of Ethylene Glycol-Based Nanofluids Containing Multiwalled Carbon Nanotubes

Tam, Nguyen Trong; Trinh, Pham Van; Anh, Nguyen Ngoc; Hong, Nguyen Tuan; Hong, Phan Ngoc; Minh, Phan Ngoc; Thắng, Bùi Hùng

doi:10.1155/2018/2750168

Cited by 11 publications

(2 citation statements)

References 39 publications

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“…This meant MWCNT nanofluids had a greater thermal efficiency than ethylene glycol and nanosilica nanofluids with the same concentration. Tam et al [ 189 ] investigated the thermal conductivity and photothermal conversion performance of ethylene glycol-based nanofluids containing MWCNT. They reported that the highest photothermal conversion was obtained about 4.2% after a 30 min lighting with nanofluid containing 0.48 vol% CNT concentration compared to pure EG.…”

Section: Carbon-based Nanofluids For Direct Solar Absorptionmentioning

confidence: 99%

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

et al. 2020

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Recently, many scientists have been making remarkable efforts to enhance the efficiency of direct solar thermal absorption collectors that depends on working fluids. There are a number of heat transfer fluids being investigated and developed. Among these fluids, carbon nanomaterial-based nanofluids have become the candidates with the most potential by the heat absorbing and transfer properties of the carbon nanomaterials. This paper provides an overview of the current achievements in preparing and exploiting carbon nanomaterial-based nanofluids to direct thermal solar absorption. In addition, a brief discussion of challenges and recommendations for future work is presented.

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Section: Carbon-based Nanofluids For Direct Solar Absorptionmentioning

confidence: 99%

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

et al. 2020

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“…Previously, the general methods for measuring PTCE used infrared cameras or infrared photodetectors to observe the temperature changes. These methods always exhibited some drawbacks of low accuracy, small dynamic range, poor resolution, and great damage [ 19 , 20 , 21 ]. Here, we proposed a simple, quick, and non-destructive method to measure the PTCE of CNT films based on a Raman spectrum.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the Photothermal Conversion Efficiency of CNT Films Utilizing a Raman Spectrum

et al. 2022

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Because carbon nanotube (CNT) films have high photothermal conversion efficiency (PTCE), they have been widely used in bolometric and photothermoelectric photodetectors, seawater desalination, and cancer therapy. Here, we present a simple, quick, and non-destructive method to measure the PTCE of CNT films. According to the linear relationship between the Raman shift of the G+ peak and the temperature of a CNT, the offset of the G+ peak under varying excitation light power can characterize the changed temperature. Combining the simulation of the temperature distribution, the final value of the PTCE can be obtained. Finally, a CNT film with a high PTCE was chosen to be fabricated as a bolometric photodetector; a quite high responsivity (2 A W−1 at 532 nm) of this device demonstrated the effectiveness of our method.

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