Computational Analysis of Thermal Performance Augmentation in Helical Coil Heat Exchangers via CuO/Water Nanofluid
Journal Title: Power Engineering and Engineering Thermophysics - Year 2023, Vol 2, Issue 3
Abstract
Helical or spiral coiled heat exchangers, prevalent in industries such as power generation, heat recovery systems, the food sector, and various plant processes, exhibit potential for performance enhancement through optimal fluid selection. Notably, nanofluids, distinguished by their superior thermophysical properties, including enhanced thermal conductivity, viscosity, and convective heat transfer coefficient (HTC), are considered viable candidates. In this study, the thermo-physical attributes of helical coil heat exchangers (HCHEs), when subjected to nanofluids, were meticulously examined. During the design phase, Creo parametric design software was employed to refine the geometric configuration, subsequently enhancing fluid flow dynamics, thereby yielding a design improvement for the HCHE. Subsequent computational fluid dynamics (CFD) simulations of the heat exchanger were conducted via the ANSYS CFX program. A CuO/water nanofluid, at a 1% volume fraction, served as the basis for the CFD analysis, incorporating the Re-Normalisation Group (k − ε) turbulence model. From these simulations, zones exhibiting elevated temperature and pressure were discerned. It was observed that the wall HTC value for the CuO/water mixture surpassed that of pure water by 10.01%. Concurrently, the Nusselt number, when the CuO/water nanofluid was employed, escalated by 6.8% in comparison to utilizing water alone. However, it should be noted that a 5.43%increment in the pressure drop was recorded for the CuO/water nanofluid in contrast to pure water.
Authors and Affiliations
Rafael Cavicchioli Batista, Rejeesh Charuvila Rajendran
Experimental Investigation on the Effect of TiO2 Nanoparticles Emulsion in Water on Emissions and Performance Characteristics of DI Diesel Engine
The world is presently confronted with the twin crisis of resource restriction and environmental degradation. The search for solutions that promise a harmonious correlation with sustainable development, energy conservati...
Enhanced Design of Piston Cooling Nozzles via Computational Fluid Dynamics
To elucidate the relationship between the flow rate of an engine’s piston cooling nozzle and its internal structure, a structural model of the piston cooling nozzle and a three-dimensional model of the internal flow fiel...
Measuring Temperatures Generated by Air Plasma Technology
The atmospheric pressure air plasma technology is based on the general principle of transforming the air into an ideal conductor of plasma energy thanks to the application of an electric potential difference able to ioni...
Heat Absorption Performance Enhancement of TES System Using Iron Oxide/Paraffin Wax Composite
Thermal Energy Storage (TES) system has emerged as a promising solution of energy demand and supply management, which stores excess thermal energy and releases it when energy demand is high, making it an efficient and co...
Efficiency Optimization in Solar Water Heaters: A Comparative CFD Study of Design Configurations
In the realm of renewable energy, the optimization of solar water heating (SWH) systems stands paramount for addressing the escalating energy demands. This investigation delves into the pivotal role of design configurati...