Sustainable Heat Transfer Management: Modeling of Entropy Generation Minimization and Nusselt Number Development in Internal Flows with Various Shapes of Cross-Sections Using Water and Al2O3/Water Nanofluid

Abstract

In order to achieve the best performance of a thermal system, two major analyses must be carried out on the system: energy and entropy generation. The best scenario is a mechanism in which the system has minimum entropy generation and the highest Nu number. In this regard, we investigated entropy generation and Nu number of fluid flow through tubes of various cross-sections, namely circular tubes, square channels, and rectangular ducts. Additionally, the addition of nanoparticles was tested, and both analyses were carried out. The results reveal that using nanoparticles could significantly increase Nu number and, at the same time, decrease entropy generation. The results showed that the circular cross-section performs better in Nu number and entropy generation. In most cases, the rectangular cross-section performed better than the square one in terms of energy and entropy. In the best case, the average Nu for the circular cross-section was 26% greater than that of the square. The average Nu of the rectangular cross-section showed that this value is 5% greater than that of the square cross-section. Additionally, the total entropy generation of circular cross-sections, which is the minimum, was 44% and 38% lower than rectangular and square cross-sections, respectively.

Urban waste water management paradigm evolution: Decentralization, resource recovery, and water reclamation and reuse

“…As real environmentalists, we must comprehend this phrase's broader definition, which is now feasible given current technology and anticipated by a larger population. In the past, our profession has successfully met these problems; it is now up to us to do so (Jery et al, 2022).…”

“…Because wastewater treatment has historically improved and protected public health and the environment, wastewater experts frequently refer to themselves as “practical environmentalists.” As real environmentalists, we must comprehend this phrase's broader definition, which is now feasible given current technology and anticipated by a larger population. In the past, our profession has successfully met these problems; it is now up to us to do so (Jery et al., 2022).…”

Applications of solar thermal radiation in a bio‐convective Eyring–Powell hybrid nanofluid flow under the influence of electro‐magnetohydrodynamics near a stagnation point: An irreversibility study

“…Computational analysis is discussed with the Cattano-Christov heat flux effect and a Keller-box scheme is used to configure the results through MATLAB software. Jery et al [2] analyzed the entropy generation minimization in sustainable internal flow of different shapes having cross-sections using base fluid water and Nanoparticles. Heat transfer management is discussed with the highest Nusselt number and minimum entropy.…”

“…Jery et al. [2] analyzed the entropy generation minimization in sustainable internal flow of different shapes having cross‐sections using base fluid water and Nanoparticles. Heat transfer management is discussed with the highest Nusselt number and minimum entropy.…”