Design and development of horizontal axis wind blade in regenerative energy system for cooling tower
In Malaysia which is experiencing humid and hot climates throughout the year, usage of cooling tower is very common in most industry and company to cool down the machineries. The waste produced into the environment by these cooling towers is in the form of heat and wind energy. As an initiative for...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/26018/1/Design%20and%20development%20of%20horizontal%20axis%20wind%20blade%20in%20regenerative%20energy%20system%20for%20cooling%20tower.pdf http://eprints.utem.edu.my/id/eprint/26018/2/Design%20and%20development%20of%20horizontal%20axis%20wind%20blade%20in%20regenerative%20energy%20system%20for%20cooling%20tower.pdf |
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| Summary: | In Malaysia which is experiencing humid and hot climates throughout the year, usage of cooling tower is very common in most industry and company to cool down the machineries. The waste produced into the environment by these cooling towers is in the form of heat and wind energy. As an initiative for sustainable development, there is a need for development of an efficient and effective energy regenerative system. This thesis presents a work on design and development of such system, named Wasted Kinetic Energy Recovery System (WKERS) to harvest the discharged wind energy from a second source wind energy that is the cooling tower. Cooling tower provides the most suitable wind speed during operation, and the best part is that the wind supply is stable and constant. This study aims to determine the possibility of generating electricity using a regenerative system. In accordance with that, this study also aims to establish the most suitable blade design for the Horizontal Axis Wind Turbine (HAWT) of WKERS. Hence, three different types of blades, which are elliptical, swept and National Renewable Energy Laboratory (NREL) Phase VI blades were designed and their performances were evaluated for the application in WKERS. Firstly, the three blades were sketched and designed using SolidWorks software. Next, linear and rotational flow simulations were carried out using Computational Fluid Dynamics (CFD) analysis to determine the performance and efficiency of the different blade designs. The three blades were fabricated as prototypes. Experimental studies were carried out to validate the rotational speed of each wind turbine blade in order to evaluate the performances of each blade design. Simulation results showed that the blade with the best lifting effect was the swept blade, however more vortices were created after the trailing edge and caused high induced drag to the blade itself. Results obtained showed that the elliptical blade possess the best overall performances of the three proposed designs. The fabricated prototype of the elliptical blade produced up to 508 rev/min of average rotational speed and was the highest value compared to the other two blade types. The elliptical blade design was concluded as the best. |
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