The investigation of boiling crisis of nanofluids

Andrey Minakov,Vladimir Zhigarev,Valery Rudyak,Maxim Pryazhnikov,D.V Zaitsev,O.A Kabov

doi:10.1051/matecconf/20168400025

Abstract

Saturated boiling of nanofluids on a cylindrical heater with different diameters is experimentally studied. Studied nanofluids were prepared using distilled water and different metal oxides nanoparticles. The volume concentration of the nanoparticles was changed from 0.05 to 1%. It has been measured that the critical heat flux for nanofluids was much higher than for water. A strong dependence of CHF on the material and size of the nanoparticles and duration of boiling and size of heater was shown.

Highlights

Studies of the last two decades have shown that nanofluids have unusual transfer properties
The here displayed values of heat flow critical density were obtained by averaging over five independent experiments
Analysis of heat flux density behavior during boiling of nanofluids shows that the use of nanoparticles brings about a considerable increase in the critical thermal load

Summary

Introduction

Studies of the last two decades have shown that nanofluids have unusual transfer properties. Small adds of nanoparticles into carrying liquid can considerably increase its heat conductivity and viscosity [1,2,3,4]. This stimulated many thermophysical applications of nanofluids, aimed at intensification of heat exchange. The further intention to increase this coefficient stimulated the study of heat transfer of nanofluids during boiling. These works have been performed quite intensely during the last decade. In [9,10,11], this coefficient rose

Objectives

Results

Conclusion