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Cooling is one of the most essential scientific challenges in different industries, therefore the potential of nanofluids for heat transfer applications have attracted the most attentions. The thermal conductivity is the most significant thermophysical properties of nanofluids, which must be studied in order to demonstrate the capabilities of the new engineered suspensions for heat transfer applications. In present work, the methanol based nanofluid with silver nanoparticle is prepared by two step method. The ultrasonic velocity, density and viscosity are detected by pulse echo technique, specific gravity bottle and Ostwald’s viscometer respectively at various concentration of silver nanoparticle and temperature. The results shows close agreement of the enhancement of thermal conductivity and ultrasonic velocity may be due to the clustering effect and more beneficial in fast heat transfer process.
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