Computational fluid dynamics simulation of the effect of guide-vane angles on the performance of the exhaust air energy recovery turbine generator

S. C. Poh, S. Y. Sim, W. T. Chong, Ahmad Fazlizan Abdullah, S. Y. Yip, W. P. Hew, W. Z.W. Omar, Z. M. Zain

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

An exhaust air energy recovery turbine generator is designed to recover part of the energy in the discharged air from an exhaust air system. The design is a combination of H-rotor vertical axis wind turbines (installed in cross-wind position), guide-vanes and a diffuser. Its working principle was tested on a scaled model of cooling tower and simulated in a computational fluid dynamic (CFD) package. From the guide-vanes study, optimum guide-vanes arrangement is 100°, 70° and 90°. The system with optimized guidevanes arrangement produced the highest torque coefficient compared to the other configurations. The average torque coefficient of the system was increased by 24.3% with the introduction of diffuser and guide-vanes at optimized angles, i.e. from 0.029 to 0.036. From the graph of the torque coefficient versus azimuth angle, the overall positive torque zone was increased with the introduction of the guide-vanes with optimum configuration. The exhaust air energy recovery turbine generator can be another green technology that recovers waste energy from the discharged wind of an exhaust air system for urban areas.

Original languageEnglish
Pages (from-to)1286-1289
Number of pages4
JournalEnergy Procedia
Volume61
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes

Fingerprint

Turbogenerators
Computational fluid dynamics
Recovery
Torque
Computer simulation
Air
Environmental technology
Cooling towers
Wind turbines
Rotors

Keywords

  • Decarbonisation
  • Diffuser
  • Energy recovery
  • Guide-vane
  • Urban wind turbine

ASJC Scopus subject areas

  • Energy(all)

Cite this

Computational fluid dynamics simulation of the effect of guide-vane angles on the performance of the exhaust air energy recovery turbine generator. / Poh, S. C.; Sim, S. Y.; Chong, W. T.; Abdullah, Ahmad Fazlizan; Yip, S. Y.; Hew, W. P.; Omar, W. Z.W.; Zain, Z. M.

In: Energy Procedia, Vol. 61, 01.01.2014, p. 1286-1289.

Research output: Contribution to journalConference article

Poh, S. C. ; Sim, S. Y. ; Chong, W. T. ; Abdullah, Ahmad Fazlizan ; Yip, S. Y. ; Hew, W. P. ; Omar, W. Z.W. ; Zain, Z. M. / Computational fluid dynamics simulation of the effect of guide-vane angles on the performance of the exhaust air energy recovery turbine generator. In: Energy Procedia. 2014 ; Vol. 61. pp. 1286-1289.
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