Rüzgar Enerji Sistemleri İçin Hava Yoğunluğunun Hesaplanması

Rüzgar tarlaları son yıllarda dünyada ve Türkiye’de deniz seviyesindeki alanların yanı sıra yüksek rüzgar hızı kapasitesine sahip dağlık bölgelerde de kurulmaya başlamıştır. Ancak, dikkat edilmesi gereken en önemli nokta bu konumlarda hava yoğunluğunun azaldığı ve bunun da rüzgar türbinlerinden üretim gücüne doğrudan etkilediğidir. Küçük görünen farklar eğer fizibilite aşamasında yanlış hesaplanırsa uzun yıllar üretim göz önüne alındığında önemli farklar yaratabilirler. Bu çalışmada Türkiye'de 126 ölçüm yapılmış nokta için temelde iki farklı yöntem kullanılarak yoğunluk hesabı yapılmış ve karşılaştırılmıştır. Genel itibariyle, sonuçlar yıllık ortalamalar dikkate alındığında iki metotta da birbirine yakın çıkmakta ama aylık ortalamalarda %2 seviyelerine ulaşan üretim tahmininde hatalara yol açacak farklılıklar göstermektedir.

Anahtar Kelimeler:

Rüzgar türbinleri, hava yoğunluğu, fizibilite

Calculation of Air Density for Wind Energy Systems Use

In recent years, wind farms are being located at mountainous high altitude locations in Turkey. Nevertheless, most important point to pay attention for those locations are that the air density is lower and this effects the production of wind turbines directly. If the feasibility calculations are not performed in detail on the subject, small effects of air density can create a big loss in long term operational wind farms. In this study, two known methods (i) International standards for calculations and (ii) widely used engineering method are applied on datasets from 126 weathers stations all around Turkey and calculations are compared with each other. Results show similarities on yearly averages but outlines up to 2% differences in different months of the year.

Keywords:

Wind turbines, air density, feasibility,

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