Impact of Lorentz forces on Fe3O4-water ferrofluid entropy and exergy treatment within a permeable semi annulus

Abstract

Challenge of energy will be increase in whole world by augmenting relevance of industry with fossil energy. According to this fact, renewable energies become popular in recent years. Employing nanofluids can help scientists to improve the performance of such systems. The impact of iron oxide-water nanofluid, as working fluid, was employed to evaluate entropy generation in an enclosure in existence of magnetic force. To analyze the performance of heating unit, both view of first and second law of thermodynamic should be involved. In current research, environment-friendly magnetic fluid namely Fe 3 O 4 -water ferrofluid has been studied which is useful in magnetic nanostructured materials have been found to be very efficient in wastewater decontamination. More exactly, the behavior of magnetic nanofluid through a porous space with innovative computational method is

Influence of rotation angle of a triangular tube with a built‐in twisted tape on the thermal‐exergy efficiency and entropy generation of nanofluids in the heat exchange system

“…Figure 16 displayed the results. According to the theory of exergy efficiency, 88 x-y coordinate can be divided into four parts by three lines. For each concentration of nanofluids (0.1 wt%, 0.3 wt%, and 0.5 wt %), the average coefficient is 1.074, 1.156, and 1.241, respectively.…”

“…k i stands for the slope, and b i stands for the intercept of the straight line in the formula. According to the theory of exergy efficiency, 88 x-y coordinate can be divided into four parts by three lines. From bottom to top, dash line means the uniform pressure loss, dot line means the uniform pumping work, and the dash dot line means the uniform mass flow rate.…”

Analytical study for MHD flow of Williamson nanofluid with the effects of variable thickness, nonlinear thermal radiation and improved Fourier’s and Fick’s Laws

“…In an article Sheikholeslami et al [21] also elaborated the heat transfer enhancement with turbulator and entropy generation. Some remarkable work on the energy storage and entropy generation can be cited in [22][23][24][25]. Jha and Malgwi [26] investigated the combined effects of slip current and Hall on MHD flow in a vertical microchannel with free convection.…”

Effect of nanofluidic electrolyte on the electrochemically enhanced long‐term efficiency of vanadium redox flow battery

“…This article is the first application of nanofluidic electrolytes for VRFB system based on multiwalled carbon nanotube (MWCNT). Previous research on nanofluids has focused on heat transfer enhancement, lubrication and permeable medium, but recently applications have expanded to thermal and electrochemical energy storage . Nanofluids improve the electrochemical properties of the redox couple in the active region due to their high porosity and high surface‐to‐volume ratio, enhanced conductivity, increased active sites due to surface deposition, and the range of viscosity applicable to RFB as well as interesting properties (electrical, optical, mechanical and magnetic).…”

“…Previous research on nanofluids has focused on heat transfer enhancement, [10][11][12] lubrication and permeable medium, 13 but recently applications have expanded to thermal and electrochemical energy storage. [14][15][16][17][18] Nanofluids improve the electrochemical properties of the redox couple in the active region due to their high porosity and high surface-to-volume ratio, enhanced conductivity, increased active sites due to surface deposition, and the range of viscosity applicable to RFB 19 as well as interesting properties (electrical, optical, mechanical and magnetic). MWCNT is a substance that can be applied to functional groups for a variety of functions with considerable electrochemical activity and cost effectiveness, but as we know, there is no VRFB electrochemical study of nanofluids using MWCNT.…”