naa a22 4500 510822363 CHVBK 20180411083539.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s12541-013-0138-3 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0138-3 Exhaust air energy recovery system for electrical power generation in future green cities [Elektronische Daten] [Wen Chong, Sin Poh, Ahmad Fazlizan, Sook Yip, Mei Koay, Wooi Hew] 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. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Cooling tower nationallicence Energy recovery nationallicence Green technology nationallicence Renewable energy nationallicence Urban wind energy nationallicence Wind turbine nationallicence GHG : Greenhouse Gas nationallicence TNB : Tenaga Nasional Berhad nationallicence VAWT : Vertical Axis Wind Turbine nationallicence RE : Renewable energy nationallicence DAWT : Diffuser Augmented Wind Turbine nationallicence Chong Wen Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut Poh Sin Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut Fazlizan Ahmad Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut Yip Sook UMPEDAC, Level 4, Wisma R & D, University Malaya, Jalan Pantai Baharu, 59990, Kuala Lumpur, Malaysia aut Koay Mei Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia aut Hew Wooi UMPEDAC, Level 4, Wisma R & D, University Malaya, Jalan Pantai Baharu, 59990, Kuala Lumpur, Malaysia aut International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1029-1035 2234-7593 14:6<1029 2013 14 12541 https://doi.org/10.1007/s12541-013-0138-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0138-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chong Wen Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Poh Sin Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Fazlizan Ahmad Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Yip Sook UMPEDAC, Level 4, Wisma R & D, University Malaya, Jalan Pantai Baharu, 59990, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Koay Mei Faculty of Mechanical Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia aut NATIONALLICENCE 700 1- Hew Wooi UMPEDAC, Level 4, Wisma R & D, University Malaya, Jalan Pantai Baharu, 59990, Kuala Lumpur, Malaysia aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1029-1035 2234-7593 14:6<1029 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer