Türkiye'nin bazı şehirleri için güneş ışınım ekserji potansiyeli

Öz

Güneş, sürdürülebilir enerji sistemleri için önemli bir yenilenebilir enerji kaynağıdır. Bu çalışmada, Türkiye’de seçilen illerin güneş ışınımı ekserjisi ve ekserji/enerji oranları Petela, Spanner ve Jeter modelleri kullanılarak hesaplanmıştır. Hesaplamalarda, Meteoroloji Genel Müdürlüğü’nden alınan ortalama güneş ışınımı şiddeti ve yıllık ortalama sıcaklık verileri kullanılmıştır. Sonuçlar, yıllık ortalama güneş ışınımı şiddetinin 11,076–17,513 MJ/m²·gün arasında değiştiğini göstermiştir. En yüksek güneş ışınımı ve ekserji değerleri Mersin’de elde edilmiştir. Mersin için Petela ve Spanner modelleri 16,371 MJ/m²·gün, Jeter modeli ise 16,657 MJ/m²·gün ekserji değeri vermiştir. Ekserji/enerji oranları sırasıyla 0,934842, 0,934840 ve 0,951130 olarak hesaplanmıştır. En düşük ekserji değerleri Rize’de elde edilmiş ve Petela ile Spanner modellerinde 10,363 MJ/m²·gün, Jeter modelinde ise 10,541 MJ/m²·gün olarak belirlenmiştir. Rize için ekserji/enerji oranları sırasıyla 0,935617, 0,935615 ve 0,951712’dir. Petela ve Spanner modelleri birbirine oldukça yakın sonuçlar verirken, Jeter modeli daha yüksek ekserji değerleri tahmin etmiştir. Bulgular, güneş ekserji potansiyelinin bölgesel ışınım ve sıcaklık koşullarına bağlı olduğunu ve güney kıyı bölgelerinin daha yüksek potansiyele sahip olduğunu göstermektedir.

Anahtar Kelimeler

• Güneş radyasyonu
• radyasyon ekserjisi
• enerji-ekserji dönüşümü

Kaynakça

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