ÜÇ BOYUTLU GEÇİCİ SAYISAL SİMÜLASYON İLE KANATLI PCM İLE ENTEGRE PV MODÜLÜN PERFORMANSINDAKİ ARTIŞIN ANALİZİ

Öz

Dikdörtgen düz kanatlarla entegre edilmiş PV-PCM'nin genel performansı, üç boyutlu geçici sayısal simülasyonlarla analiz edilir. Sistemin kanat uzunluklarının, kanat sayısının (n) ve eğiminin (θ) etkisi araştırılır ve yalnızca PV sistemiyle karşılaştırılır ve daha sonra optimum sistem konfigürasyonu tanımlanır. Simülasyonları COMSOL Multiphysics 6.0 kullanarak gerçekleştirmek için sonlu elemanlar analizi kullanıldı. PV'nin ön yüzeyi 180 dakika boyunca 1000 W/m2 'lik sabit bir akışa maruz bırakılır ve kullanılan PCM, RT25HC'dir. Sonuçlar, ortalama PV sıcaklığının artan eğim ve kanat uzunluğuyla birlikte düşme eğiliminde olduğunu, dolayısıyla PV verimliliğinin arttığını ve belirli bir eğim ve kanat sayısı için tam kanat durumunda maksimum iyileştirmenin elde edildiğini göstermektedir. Yalnızca PV sistemiyle karşılaştırıldığında, kanat sayısı 6'ya eşit olan tam uzunlukta kanatlardan oluşan yatay sistem için en yüksek PV sıcaklık düşüşü ve PV verimlilik artışı sırasıyla 59,65 °C ve %45,1'dir. -6 kanatlı ve 45° eğimli PCM sistemi, 14,16 W ile en yüksek anlık güç çıkışını verir. PCM'nin erime hızı, PCM içindeki ısı aktarım hızıyla güçlü bir şekilde ilişkilidir ve en düşük erime süresi, 8 kanatlı PV- için elde edilir. θ = 45° olan PCM sistemi. Farklı kanat uzunluklarına sahip tüm sistemler için tepe hız büyüklüğü de PCM içindeki konveksiyon seviyelerinin kapsamını analiz etmek için incelenir.

Anahtar Kelimeler

• Geçici rejim sayısal simülasyonlar
• Kanat sayısı
• Eğim açısı
• PV verimliliği
• Erime hızı

ANALYSIS OF AUGMENTATION IN PERFORMANCE OF PV MODULE INTEGRATED WITH FINNED PCM BY THREE-DIMENSIONAL TRANSIENT NUMERICAL SIMULATION

Öz

The overall performance of PV-PCM integrated with rectangular straight fins is analysed by three-dimensional transient numerical simulations. The influence of fin lengths, number of fins (n), and inclination (θ) of the system is investigated and compared with the PV-only system, and an optimal system configuration is then identified. Finite element analysis is used to conduct the simulations using COMSOL Multiphysics 6.0. The PV front surface is subjected to a constant flux of 1000 W/m2 for 180 min, and the PCM employed is RT25HC. The results indicate that the average PV temperature tends to drop with increasing inclination and fin length, thereby enhancing the PV efficiency, with maximum improvement attained for the full fin case for a given inclination and number of fins. Compared to the PV-only system, the highest PV temperature reduction and PV efficiency enhancement are 59.65 °C and 45.1%, respectively, for the horizontal system of full-length fins with a number of fins equal to 6. The full-fin PV-PCM system with 6 fins and 45° inclination gives the highest instantaneous power output of 14.16 W. The melting rate of PCM is strongly related to the heat transfer rate inside PCM, and the lowest melting time is obtained for the 8-finned PV-PCM system with θ = 45°. The peak velocity magnitude for all systems with different fin lengths is also examined to analyse the extent of convection levels within PCM.

Anahtar Kelimeler

• Transient numerical simulations
• Number of fins
• Inclination angle
• PV efficiency
• Melting rate

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