Abstract

Thermal Performance and Viscosity of Biologically Produced Silver/Coconut Oil Nanofluids

Highlights

  • Continuous progress in designing a new generation of powerful car engines has led to the enhancement of the heat transfer rate in engine cooling systems, which has faced the designers with serious limitations for cooling the engines

  • In view of the aforementioned literature, in the present work, thermal performance of biologically produced Ag nanoparticles dispersed in coconut oil was investigated

  • Thermal conductivity of nanofluid is a strong function of concentration of nanoparticles and operating temperature

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Summary

Introduction

Continuous progress in designing a new generation of powerful car engines has led to the enhancement of the heat transfer rate in engine cooling systems, which has faced the designers with serious limitations for cooling the engines. The optimum volume concentration of nanoparticles and the maximum increment of boiling heat transfer coefficient in their study were 0.75 % and 64 %, respectively They reported a slight enhancement in thermal performance of the system, they mentioned no information regarding the sedimentation and status of particles over the extended period of operation. Transmission electron microscopy analysis revealed that most of the AgNPs were of spherical shape with mean diameter about 15 nm They synthesized a relatively pure Ag by a new method, they did not investigate the thermal performance of the Ag. In another study, Benakashani et al.[29] reported the synthesis of silver nanoparticles by reducing the silver ions present in the solution of silver nitrate with the cell free aqueous extract of Capparis spinosa leaves. More information about uncertainty analysis can be found in our previous publication[37]

Results and discussion
Viscosity
Conclusions
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