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Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach

An innovative system for recovering exhaust gas is created to recycle the energy from industry cooling tower waste. Two Vertical Axis Wind Turbines (VAWTs) with enclosure are positioned at a specific position at the outlet of cooling tower to harness the wind energy for electricity generation. From...

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Main Authors: Yap, H. T., Ong, Z. C., Chong, W. T., Kong, K. K., Khoo, S. Y., Z., Ismail, Abdul Ghaffar, Abdul Rahman
Format: Conference or Workshop Item
Language:English
Published: Elsevier Ltd 2014
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://umpir.ump.edu.my/id/eprint/25424/1/Design%20optimisation%20of%20shroud-augmented%20dual-rotor%20exhaust%20air%20energy.pdf
http://umpir.ump.edu.my/id/eprint/25424/
https://doi.org/10.1016/j.egypro.2014.11.1077
https://doi.org/10.1016/j.egypro.2014.11.1077
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spelling my.ump.umpir.254242020-02-11T01:56:04Z http://umpir.ump.edu.my/id/eprint/25424/ Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach Yap, H. T. Ong, Z. C. Chong, W. T. Kong, K. K. Khoo, S. Y. Z., Ismail Abdul Ghaffar, Abdul Rahman TJ Mechanical engineering and machinery An innovative system for recovering exhaust gas is created to recycle the energy from industry cooling tower waste. Two Vertical Axis Wind Turbines (VAWTs) with enclosure are positioned at a specific position at the outlet of cooling tower to harness the wind energy for electricity generation. From structural dynamics aspect, adding two VAWTs or dual-rotor with enclosure can contribute extra burden to the cooling tower. This has changed the dynamic characteristics of the cooling tower. Therefore, a hybrid non-destructive evaluation approach is proposed to investigate the dynamic behaviour and reliability of this new design. From this approach, it was found that the overall vibration of the cooling tower increased from 3mm/s to 26mm/s after the installation of the VAWTs with enclosure. The VAWTs are not operating at its optimum speed due to energy loss in vibration. The operating speed of VAWTs (i.e. 7.5Hz) was found close to one of the natural frequencies of VAWT (i.e. 7.0Hz). This indicates structural dynamic weakness which causes high vibration as recorded. Structural Dynamic Modification (SDM) is performed on the new design in the attempt to reduce the vibration at VAWTs and improve the reliability of VAWTs with enclosure in order to ensure optimum operation of VAWTs. The SDM is expected to shift the natural frequency away from the operating frequency with around 81% of reduction in vibration level which leads it to safe and unrestricted long-term operation. In addition, reducing vibration at VAWTs also recovers the energy loss of 419 Joules and subsequently maximises the efficiency of wind turbine. Elsevier Ltd 2014 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25424/1/Design%20optimisation%20of%20shroud-augmented%20dual-rotor%20exhaust%20air%20energy.pdf Yap, H. T. and Ong, Z. C. and Chong, W. T. and Kong, K. K. and Khoo, S. Y. and Z., Ismail and Abdul Ghaffar, Abdul Rahman (2014) Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach. In: 6th International Conference on Applied Energy, ICAE 2014, 30 May - 2 June 2014 , National Taiwan University of Science and TechnologyTaipei, Taiwan. pp. 1266-1269., 61. ISSN 1876-6102 https://doi.org/10.1016/j.egypro.2014.11.1077 https://doi.org/10.1016/j.egypro.2014.11.1077
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Yap, H. T.
Ong, Z. C.
Chong, W. T.
Kong, K. K.
Khoo, S. Y.
Z., Ismail
Abdul Ghaffar, Abdul Rahman
Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
description An innovative system for recovering exhaust gas is created to recycle the energy from industry cooling tower waste. Two Vertical Axis Wind Turbines (VAWTs) with enclosure are positioned at a specific position at the outlet of cooling tower to harness the wind energy for electricity generation. From structural dynamics aspect, adding two VAWTs or dual-rotor with enclosure can contribute extra burden to the cooling tower. This has changed the dynamic characteristics of the cooling tower. Therefore, a hybrid non-destructive evaluation approach is proposed to investigate the dynamic behaviour and reliability of this new design. From this approach, it was found that the overall vibration of the cooling tower increased from 3mm/s to 26mm/s after the installation of the VAWTs with enclosure. The VAWTs are not operating at its optimum speed due to energy loss in vibration. The operating speed of VAWTs (i.e. 7.5Hz) was found close to one of the natural frequencies of VAWT (i.e. 7.0Hz). This indicates structural dynamic weakness which causes high vibration as recorded. Structural Dynamic Modification (SDM) is performed on the new design in the attempt to reduce the vibration at VAWTs and improve the reliability of VAWTs with enclosure in order to ensure optimum operation of VAWTs. The SDM is expected to shift the natural frequency away from the operating frequency with around 81% of reduction in vibration level which leads it to safe and unrestricted long-term operation. In addition, reducing vibration at VAWTs also recovers the energy loss of 419 Joules and subsequently maximises the efficiency of wind turbine.
format Conference or Workshop Item
author Yap, H. T.
Ong, Z. C.
Chong, W. T.
Kong, K. K.
Khoo, S. Y.
Z., Ismail
Abdul Ghaffar, Abdul Rahman
author_facet Yap, H. T.
Ong, Z. C.
Chong, W. T.
Kong, K. K.
Khoo, S. Y.
Z., Ismail
Abdul Ghaffar, Abdul Rahman
author_sort Yap, H. T.
title Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
title_short Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
title_full Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
title_fullStr Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
title_full_unstemmed Design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
title_sort design optimisation of shroud-augmented dual-rotor exhaust air energy recovery wind turbine generator using hybrid non-destructive evaluation approach
publisher Elsevier Ltd
publishDate 2014
url http://umpir.ump.edu.my/id/eprint/25424/1/Design%20optimisation%20of%20shroud-augmented%20dual-rotor%20exhaust%20air%20energy.pdf
http://umpir.ump.edu.my/id/eprint/25424/
https://doi.org/10.1016/j.egypro.2014.11.1077
https://doi.org/10.1016/j.egypro.2014.11.1077
_version_ 1662754716773253120
score 13.211869

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