Nucleate pool boiling of nanofluids based refrigerants

Enhancement in the pool boiling heat transfer is crucial to operate the thermoelectric systems such as refrigeration and nuclear power plants in the safe limit. The enhancement can be obtained by tailoring the geometry of the heating surface or by manipulating the thermophysical properties of the working fluid in a controlled fashion. Mixing the nanoparticles in the working fluid during the pool boiling heat transfer has shown plausible heat transfer enhancement due to the high thermal conductivity of nanoparticles. This chapter reviews the enhancement obtained by the addition of nanoparticles in the refrigerants. The key parameters such as concentration and size of nanoparticles affecting the heat transfer are also highlighted. Besides, the studies highlighting the issues associated with the nanofluids and ways to mitigate are also covered. The studies discussing the role of lubricant in augmenting and deteriorating the heat transfer of nanorefrigerants are also reviewed. The obtained insights can pave the ways for the selection of the combination of nanorefrigerants and heating surface to ameliorate the pool boiling heat transfer.