TY - JOUR TT - Calculation of Air Density for Wind Energy Systems Use AU - Bingöl, Ferhat PY - 2018 DA - June DO - 10.2339/politeknik.385523 JF - Politeknik Dergisi PB - Gazi University WT - DergiPark SN - 2147-9429 SP - 273 EP - 281 VL - 21 IS - 2 KW - Rüzgar türbinleri KW - hava yoğunluğu KW - fizibilite N2 - In recent years, wind farms are being located atmountainous high altitude locations in Turkey. Nevertheless, most importantpoint to pay attention for those locations are that the air density is lowerand this effects the production of wind turbines directly. If the feasibilitycalculations are not performed in detail on the subject, small effects of airdensity can create a big loss in long term operational wind farms. In thisstudy, two known methods (i) International standards for calculations and (ii)widely used engineering method are applied on datasets from 126 weathersstations all around Turkey and calculations are compared with each other.Results show similarities on yearly averages but outlines up to 2% differencesin different months of the year. CR - [1] Tu¨rkiye Ru¨zgar Enerjileri Birlig˘i, ˙Istatistik Raporu, Ocak (2017). CR - [2] Yenilenebilir Enerjiler Genel Mu¨du¨rlu¨g˘u¨. REPA (˙Il Bazlı Ru¨zgaˆr Enerjisi Potansiyeli Atlası), (2012). CR - [3] Jake Badger, Neil Davis, Andrea N. Hahmann, Bjarke Tobias Olsen, Xiaoli Guo Larse´n, Mark C. Kelly, Patrick Volker, Merete Badger, Tobias Torben Ahsbahs, Niels Gylling Mortensen, Hans Ejsing Jørgensen, Erik Lundtang Petersen, Julia Lange, and Nicolas Fichaux. The new worldwide mic- roscale wind resource assessment data on IRENA’s Global Atlas. The EUDP Global Wind Atlas, (2015). CR - [4] Ferhat Bingo¨l. Adaptation of Uniform Wind Atlases: Case Study of Turkey. TU¨ B˙ITAK (114C016) Final Report. CR - [5] Sinem Deg˘irmenci. Environmental Impact And Capacity Analysis Of Renewable Energy Resources: Case Study Of Wind Energy In Turkey. Master’s thesis, Izmir Institute of Technology, (2016). CR - [6] M.O.L. Hansen. Aerodynamics of Wind Turbines. Earthscan, (2013). CR - [7] H. Tennekes. The logarithmic wind profile. Journal of the Atmospheric Sciences, 30(2): 234–238, (1973). CR - [8] J. C. Kaimal and J. J. Finnigan. Atmospheric Boundary Layer Flows: Their Structure and Measurement. Oxford University Press, (1994). CR - [9] R Stull. Meteorology for Scientists & Engineers. Univ. of British Columbia, 3rd edi- tion edition, (2011). CR - [10] P Giacomo. Equation for the determination of the density of moist air (1981). Metrolo- gia, 18(1): 33, (1982). CR - [11] R S Davis. Equation for the determination of the density of moist air (1981/91). Met- rologia, 29(1): 67, (1992). CR - [12] A Picard and H Fang. Three methods of determining the density of moist air during mass comparisons. Metrologia, 39(1): 31, (2002). CR - [13] A Picard, H Fang, and M Gla¨ser. Discrepancies in air density determination between the thermodynamic formula and a gravimet- ric method: evidence for a new value of the mole fraction of argon in air. Metrologia, 41(6):396, (2004). CR - [14] S Y Park, J S Kim, J B Lee, M B Esler, R S Davis, and R I Wielgosz. A redetermination of the argon content of air for buoyancy corrections in mass standard comparisons. Metrologia, 41(6):387, (2004). CR - [15] A Picard, R S Davis, M Gla¨ser, and K Fujii. Revised formula for th density of moist air (cipm-2007). Metrologia, 45(2):149, (2008). CR - [16] Wind turbines - part 12-1: Power perfor- mance measurements f electricity producing wind turbines (iec 61400-12-1:2005), (2005). CR - [17] Lasse Svenningsen. Power curve air density correction and other power cuve options in windpro. Technical report, EMD Internati- onal A/S,( 2010). CR - [18] J.W. Wagenaar and P.J. Eecen. Dependence of power performance o atmospheric conditions and possible corrections. Technical report, ECN Wind Energy, 2011. In Proce- edings at EWEA (2011). CR - [19] Mark Young. Power curve measurement ex- periences, and new approaches. In EWEA Resource Assessment Workshop - Dublin, (2013). CR - [20] Wind energy generation systems - part 12-1: Power performance measurements of electricity producing wind turbines (iec 61400- 12-1: (2017). CR - [21] R. Feistel, D. G. Wright, H.-J. Kretzschmar, E. Hagen, S. Herrmann, and R. Span. Thermodynamic properties of sea air. Ocean Science, 6(1):91–141, (2010). CR - [22] Technical University of Denmark. WAsP, Help Documents, version 11 edition, (2014). CR - [23] Robert J. Hijmans, Susan E. Cameron, Juan L. Parra, Peter G. Jones, and Andy Jarvis. Very high resolution interpo- lated climate surfaces for global land areas. International Journal of Climatology, 25(15): 1965–1978, (2005). CR - [24] H. I. Reuter, A. Nelson, and A. Jarvis. An evaluation of void-filling interpolation methods for SRTM data. International Jour- nal of Geographical Information Science, 21(9): 983–1008, (2007). CR - [25] Erik Lundtang Petersen, Ib Troen, Hans Ejsing Jørgensen, and Jakob Mann. The new european wind atlas. Energy Bulletin, 1(17): 34–39, (2014). UR - https://doi.org/10.2339/politeknik.385523 L1 - https://dergipark.org.tr/en/download/article-file/413299 ER -