Computational Analysis of Air Energy Extractors for Guided Flow Exhaust Applications

Singh, Enderaaj; Roy, Sukanta; San, Yam Ke; Law, Ming Chiat; Kumar, Puneet

doi:10.1007/978-981-19-2412-5_11

Cited by 1 publication

(1 citation statement)

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“…Both these studies have shown that the power augmentation by the diffuser with a cycloidal shape is higher than the curved-surface and flat-panel diffusers. In a previous study by the author [25], cycloidal diffuser and guide vanes was adopted to investigate and compare the power coefficient improvement on the HDWT between the two types of flow augmenters. The cycloidal diffuser produced better result with 23.92% higher power coefficient at TSR 2.0 than the bare HDWT.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of VAWT using Diffuser for Energy Extraction from Cooling Tower Exhaust Air

et al. 2023

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Renewable energy generation need to be accelerated to battle climate change and depletion of fossil fuel resources. Innovation to design wind recovery system which are efficient is vital to contribute green energy production. Many advancements in vertical axis wind turbines (VAWT) were made over the years however, it is still not as efficient as conventional turbines, and some countries does not have the luxury of strong consistent wind throughout the year. Therefore, this study focuses on extracting wind energy from unnatural sources, specifically for cooling tower exhaust air energy recovery. In this study, cycloidal diffuser with different shroud lengths was used to study the performance of a 3-bladed H-Darrieus VAWT (HDWT) with S-1046 airfoils under accelerated wind conditions in a 3-dimensional numerical study using shear stress transport k-ω turbulence model. The cycloidal diffuser with shroud length of 0.48D increased the HDWT power coefficient by 26.66% compared to the bare HDWT at tip speed ratio of 2.0. Aerodynamics around the energy extractor system was also discussed and this investigation has provided good understanding of the flow behaviour of the wind augmented HDWT under cooling tower exhaust air.

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Section: Introductionmentioning

confidence: 99%