Year 2020, Volume 25 , Issue 2, Pages 1025 - 1038 2020-08-31

Impact of Collector Slope on Power Output and System Efficiency in Solar Chimney Power Plants
GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ

Erdem CUCE [1]


In this study, impact of collector slope on the system is analysed with 3D CFD model developed based on Manzanares prototype. In the numerical model, DO (discrete ordinates) radiation model for solar load and RNG k-ε turbulence model for turbulent air flow in the system are simultaneously utilised. Maximum air velocity within the system for incoming solar radiation of    1000 W/m2 is determined to be 14.3 m/s, which agrees with experimental data of 15 m/s. In the Manzanares prototype, collector inlet height is given as 1.85 m. Here, collector inlet height is kept constant and the collector outlet height is configured as 2.91, 3.97, 5.04, 6.12 and 7.17 m, so the change in system performance is evaluated in cases where the collector slope is 0.5, 1, 1.5, 2 and 2.5°. Findings show that the increase in collector slope rises mass flow rate of air in the system and this improves power output of the system. Collector efficiency is 38.7% for the
horizontal collector which represents the reference case, whereas it is enhanced to 41.5% when collector slope is 1°. Power output of the system at reference case is 54.5 kW, while it is    57.1 kW when collector slope is 2.5°. 

Bu çalışmada toplayıcı eğiminin sisteme etkisi Manzanares prototipi esas alınarak geliştirilen 3 boyutlu CFD modeli ile analiz edilmektedir. Nümerik modelde güneş yükü için DO (discrete ordinates) ışınım modeli ve sistem içerisindeki hava hareketi için RNG k-ε türbülans modeli birleştirilerek uygulanmaktadır. 1000 W/m2 güneş ışınımında sistemdeki maksimum hız 14.3 m/s olarak bulunurken bu değer deneysel veri olan 15 m/s ile uyum içerisindedir. Manzanares prototipinde toplayıcı giriş yüksekliği 1.85 m olarak verilmektedir. Bu çalışma kapsamında toplayıcı giriş yüksekliği sabit tutularak, toplayıcı çıkış yüksekliği sırası ile 2.91, 3.97, 5.04, 6.12 ve 7.17 m olarak tasarlanmakta ve bu sayede toplayıcı eğiminin 0.5, 1, 1.5, 2 ve 2.5° olduğu durumlarda sistemin performansındaki değişim değerlendirilmektedir. Elde edilen sonuçlar toplayıcı eğimindeki artışın sistemdeki hava hareketinin kütlesel debisini arttırdığını ve bu artışın sistemin güç çıkışını iyileştirdiğini göstermektedir. Referans durumu temsil eden eğimsiz toplayıcı için toplayıcı verimi %38.7 iken toplayıcı eğimi 1° olduğunda verimin %41.5’e iyileştiği gözlenmektedir. Sistemin çıkış gücü referans durumda 54.5 kW iken toplayıcı eğimi 2.5° olduğunda 57.1 kW olarak belirlenmektedir.
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Primary Language tr
Subjects Engineering, Mechanical
Journal Section Research Articles
Authors

Orcid: 0000-0003-0150-4705
Author: Erdem CUCE (Primary Author)
Institution: Recep Tayyip Erdogan University
Country: Turkey


Dates

Application Date : May 5, 2020
Acceptance Date : July 30, 2020
Publication Date : August 31, 2020

Bibtex @research article { uumfd732862, journal = {Uludağ University Journal of The Faculty of Engineering}, issn = {2148-4147}, eissn = {2148-4155}, address = {}, publisher = {Bursa Uludağ University}, year = {2020}, volume = {25}, pages = {1025 - 1038}, doi = {10.17482/uumfd.732862}, title = {GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ}, key = {cite}, author = {Cuce, Erdem} }
APA Cuce, E . (2020). GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ . Uludağ University Journal of The Faculty of Engineering , 25 (2) , 1025-1038 . DOI: 10.17482/uumfd.732862
MLA Cuce, E . "GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ" . Uludağ University Journal of The Faculty of Engineering 25 (2020 ): 1025-1038 <https://dergipark.org.tr/en/pub/uumfd/issue/55761/732862>
Chicago Cuce, E . "GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ". Uludağ University Journal of The Faculty of Engineering 25 (2020 ): 1025-1038
RIS TY - JOUR T1 - GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ AU - Erdem Cuce Y1 - 2020 PY - 2020 N1 - doi: 10.17482/uumfd.732862 DO - 10.17482/uumfd.732862 T2 - Uludağ University Journal of The Faculty of Engineering JF - Journal JO - JOR SP - 1025 EP - 1038 VL - 25 IS - 2 SN - 2148-4147-2148-4155 M3 - doi: 10.17482/uumfd.732862 UR - https://doi.org/10.17482/uumfd.732862 Y2 - 2020 ER -
EndNote %0 Uludağ University Journal of The Faculty of Engineering GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ %A Erdem Cuce %T GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ %D 2020 %J Uludağ University Journal of The Faculty of Engineering %P 2148-4147-2148-4155 %V 25 %N 2 %R doi: 10.17482/uumfd.732862 %U 10.17482/uumfd.732862
ISNAD Cuce, Erdem . "GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ". Uludağ University Journal of The Faculty of Engineering 25 / 2 (August 2020): 1025-1038 . https://doi.org/10.17482/uumfd.732862
AMA Cuce E . GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ. UUJFE. 2020; 25(2): 1025-1038.
Vancouver Cuce E . GÜNEŞ BACASI GÜÇ SANTRALLERİNDE TOPLAYICI EĞİMİNİN ÇIKIŞ GÜCÜNE VE SİSTEM VERİMİNE ETKİSİ. Uludağ University Journal of The Faculty of Engineering. 2020; 25(2): 1025-1038.