ENERGY, EXERGY, THERMOECOLOGIC, SUSTAINABILITY, THERMOECONOMIC AND EXERGOECONOMIC ANALYSES OF SOLAR COLLECTORS

Yıl 2020, Cilt: 61 Sayı: 700, 228 - 240, 15.08.2020

Hakan Çalışkan

Öz

In this study, energy, exergy, thermoecologic, sustainability, thermoeconomic and exergoeconomic analyses of solar collectors are explained and these analyses are applied to a case study. As a case study, flat plate solar collector with 8m2 area is considered. The exergy efficiency of the system is calculated as 1,99%, while energy efficiency is 52,46%. The sustainability index, thermoecologic performance coefficient, thermoeconomic parameter rate and total exergoeconomic parameter rate of the system are found as 1,02, 0,0206, 1,4 W/TL and 2,683 W/TL, respectively. The maximum energy input and exergy input are caused by the incoming solar radiation. It is seen that most of this energy/exergy is lost, and destructed due to irreversibilities. This situation is the biggest disadvantage of the flat plate solar collectors.

Anahtar Kelimeler

Energy, Exergy, Solar Collector, Sustainability, Thermoeconomic Analysis, Efficiency

GÜNEŞ KOLLEKTÖRLERİNİN ENERJİ, EKSERJİ, TERMOEKOLOJİK, SÜRDÜRÜLEBİLİRLİK, TERMOEKONOMİK VE EKSERGOEKONOMİK ANALİZLERİ

Öz

Bu çalışmada, güneş kollektörlerinin enerji, ekserji, termoekolojik, sürdürülebilirlik, termoekonomik ve eksergoekonomik analizleri açıklanmış ve örnek bir uygulama üzerine bu analizler uygulanmıştır. Örnek uygulama olarak 8 m2 alanında düzlemsel güneş kollektörü esas alınmıştır. Sistemin enerji verimi %52,46 olarak bulunurken, ekserji verimi %1,99 olarak hesaplanmıştır. Sistemin sürdürülebilirlik indeksi, termoekolojik performans katsayısı, termoekonomik parametre değeri ve toplam eksergoekonomik parametre değeri sırasıyla 1,02, 0,0206, 1,4 W/TL ve 2,683 W/TL olarak bulunmuştur. Sistemin en yüksek enerji girişi ve ekserji girişi, gelen güneş ışınımından kaynaklanmaktadır. Bu enerjinin/ekserjinin büyük bir kısmının kayba ve tersinmezliklerden dolayı yıkıma uğradığı görülmektedir. Bu durum, düzlemsel güneş kollektörlerinin en büyük dezavantajdır.

Anahtar Kelimeler

Enerji, Ekserji, Güneş Kollektörü, Sürdürülebilirlik, Termoekonomik Analiz, Verim

Kaynakça

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