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This study aims to evaluate the effectiveness of nanofluids on the performance of direct absorption solar collectors.

December 11, 2025Scientific ReportsOpen Access

Enhanced operational efficacy of direct absorption solar collectors using multi-walled carbon nanotubes/MoS2 nanofluids

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Experimental testing shows improved thermal efficiency with nanofluids in solar collectors, indicating higher performance.

This study aims to evaluate the effectiveness of nanofluids on the performance of direct absorption solar collectors.
Experimental setup to measure thermal and exergy efficiencies
Variation of nanofluid concentrations
Controlled flow conditions with different flow rates and inlet temperatures
Testing of MWCNT and molybdenum disulfide nanofluids
MWCNT nanofluid achieved thermal efficiency of 46.4%
MBDN nanofluid reached thermal efficiency of 37.1%
Combination of both nanofluids resulted in 52.14% thermal efficiency
Hybrid nanofluid showed maximum exergy efficiency of 5.26%
Pressure drops remained low across all tested nanofluids

Talebi et al. (2025) studied this question.

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