NDLI: Exhaust air energy recovery system for electrical power generation in future green cities

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Exhaust air energy recovery system for electrical power generation in future green cities

Content Provider	Semantic Scholar
Author	Chong, Wen Tong Poh, Sin Chew Fazlizan, Ahmad Yip, Sook Yee Koay, Mei Hyie
Copyright Year	2013
Abstract	This paper investigates a technology-driven solution to supply a portion of energy demand in future green cities. An idea on harnessing unnatural wind resources for electricity is presented. Two vertical axis wind turbines with an enclosure are mounted above a cooling tower to recover part of the energy from the exhaust air. Guide-vanes are designed to create a venturi effect and guide the wind before it interacts with the turbine blades. Diffuser-plates help to draw more wind and accelerate the exhaust airflow. Safety concerns that may result from blade failure are minimized by the design of the enclosure. From the laboratory test and field test results, there is no significant difference in the current consumption of the fan motor with the installation of the wind turbines. The integration of the enclosure has shown an improvement on the turbine’s rotational speed which is 30.4% higher. The electricity generated from this system can be fed into the electricity grid. For 3000 units of cooling tower (2 m outlet diameter powered by a 7.5 kW fan motor and operated for 16 hours/day), 13% of the energy to power the fan motor is expected to be recovered from this system which equals 17.5 GWh/year.
Starting Page	1029
Ending Page	1035
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1007/s12541-013-0138-3
Alternate Webpage(s)	https://umexpert.um.edu.my/file/publication/00009890_88037.pdf
Alternate Webpage(s)	https://umexpert.um.edu.my/file/publication/00009890_139678_83360.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s12541-013-0138-3
Volume Number	14
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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