Computer fluid dynamics (CFD) study of a plate heat exchanger working with nanofluids

Liviu-Constantin Stan; Ioan Călimănescu

doi:10.1117/12.2241677

14 December 2016 Computer fluid dynamics (CFD) study of a plate heat exchanger working with nanofluids

Liviu-Constantin Stan, Ioan Călimănescu

Proceedings Volume 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII; 1001021 (2016) https://doi.org/10.1117/12.2241677
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2016, 2016, Constanta, Romania

Abstract

The industry fosters many types of heat exchangers such double pipe or plate heat exchangers (HX), but lately the plate HX are gaining the high ground in many applications. Such a plate HX is made out of serial plate modules packed together allowing the warm and cold fluids to pass through and exchange the heat. The paper is demonstrating the functioning of a medium sized plate HX functioning with 10% Al₂O₃ and water nanofluids flowing in both cold and warm sides of the HX. The influence of the nanofluid properties will be investigated as impact upon the outlet temperature of the fluid leaving the HX. Using the RSM methodology. The main conclusion of this study is that there is a balance between the nanofluids increased conductivity and their increased viscosity. The nanofluids are working well for those applications where the flow is not impeded by narrow fluid passages where the bigger influence of the viscosity is actually worsening the heat transfer conditions instead of increasing it, since the influence of viscosity in that kind of applications is three time bigger. A nanofluid conductivity threshold was also detected over which the nanofluids say with 15$ or 20% alumina content is useless for the overall heat transfer conditions.

Citation Download Citation

Liviu-Constantin Stan and Ioan Călimănescu "Computer fluid dynamics (CFD) study of a plate heat exchanger working with nanofluids", Proc. SPIE 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII, 1001021 (14 December 2016); https://doi.org/10.1117/12.2241677

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