Economic cost and efficiency analysis of the employment of inserting rods with helical fins in a shell and tube heat exchanger under magnetic field and filled with nanofluid

Abstract

Present numerical investigation studies the influence of inserting rods with helical fins in a shell and tube heat exchanger (ShT-HEX) under magnetic field (MF) and filled with two-phase nanofluid (NF) on the thermal–hydraulic performance (THP). The goal of the present article is to study the influence of different geometrical factors of fins, different Re, various MFs and also different nanoparticles concentrations on the THP of Newtonian NF flow under MF in a novel HEX using the finite volume method. Also, an economic analysis is done with the interesting parameter heat flux to reduce the weight of the HEX. It was found that the novel configuration with b = 100 mm and a = 23 mm filled with MgO-SAE10 NF at φ = 1.500% under the MF of B = 0.5 T has the optimum characteristics with the q“ = 98.08 W/m2 and 143.60 W/m2 at Re = 8,000 and 20,000, respectively. Based on obtained results, the costs of manufacturing of novel model can be 88% of the basic model. Therefore, the economic enhancement is done in this investigation using ANSYS-Fluent and SolidWorks software.

Keywords

• Shell and tube heat exchanger
• Nusselt
• Economic analysis
• Magnetic field
• Nanofluid
• Two-phase