Abstract
In the present paper, the performance of INVELOX wind turbine (IWT) in Sistan plain, as a low wind speed region, is investigated by a finite volume code and field tests. At first, the numerical results are compared with available experimental data and it is found that the numerical method is consistent with experimental data. Afterward, the performance of various working conditions of IWT (such as assemble height) at Zabol plain, Iran, is investigated. It was revealed that by increasing the assemble height from 10 to 40 m, the output power rises by 87.5%, while the power acoustic level increases by 39.3%. Moreover, the feasibility of using the IWT in a day is examined based on wind day speed obtained by a statistical study in Sistan plain from 1997 to 2012. Furthermore, in order to increase the efficiency of IWT, a new structure is suggested. The results indicated that by using a two-storey INVELOX turbine, the output power increases up to 44% which indicates that adding a storey to the device is effective to reach a higher performance while the maintenance cost is not different from common INVELOX Turbine system.
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