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Browsing by Author "Yumak, H."

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    Design, Construction and Performance Analysis of Two Hay Chopping Machines
    (2003) Yumak, H.
    Two different hay chopping machines were designed and constructed to improve feed intake and digestibility of hay by ruminants. Taking into account defects of local threshers in chopping hay, design studies were focused on two principles of chopping. They are: (1) Impact cutting in special suction channel; and (2) Cutting with a countershear. First prototype machine, named suction type chopper with rotary blades, has two functional units. A disk which has changeable cutting blades and a radial blower under the disk. Hay was chopped by disk blades effect of impact cutting while it was passing through blower suction. The second prototype machine has also two functional units that are feeding rollers and chopping unit. In fact, this machine is adapted from the chopping unit of precision-cut forage harvesters considering dry material features.
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    Article
    Wind Energy Potential on the Coast of Lake Van
    (Taylor & Francis inc, 2012) Yumak, H.; Ucar, T.; Yayla, S.
    A wind measurement mast has been erected to determine the wind potential of north eastern coast of Lake Van located in Mamedik wind corridor. Yuzuncu Yil University campus is also located in this area. Wind speed sensors are installed at 10 m and 30 m above ground level (AGL) and a wind vane at 30 m. The wind and meteorological parameters have been measured for a period of 28 months from 19 March 2004 till 31 July 2007. The measured data have been analyzed by using WAsP software and wind power potential has been assessed for the site under consideration.