Modeling of Trapezoidal Section Artificial Rough Solar Air Heater

Abdülkadir Koçer

Article Details

Modeling of Trapezoidal Section Artificial Rough Solar Air Heater

Authors:

Abdülkadir Koçer

Publisher:

Gazi University

Main Topics:

Enerji Üretimi | Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç)

Journal:

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji Vol.12 Issue 3, pp.570-578

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328731

pISSN:

2147-9526

Keywords:

Abstract:

 Although solar air heaters are widely used, their heat transfer efficiency is low. A number of studies are being conducted on this subject. In this study, numerical modeling of a solar air heater with trapezoidal section artificial roughness was applied to increase heat transfer. The study was carried out at two different roughness rates; It was designed in two dimensions and realized with ANSYS Fluent, a common computational fluid dynamics software. By applying a constant heat flux of 1000 Wm2 on the absorber plate, turbulent flow was modeled with 10 different values between 4000 and 13000 Reynolds number. As a result of the study, an increase of 1.3 to 2.3 times in the Nusselt number was observed compared to the smooth surface. The maximum thermohydraulic performance parameter was obtained with a value of 1.55. It has also been emphasized that artificial roughnesss can be used to increase heat transfer.

 Although solar air heaters are widely used, their heat transfer efficiency is low. A number of studies are being conducted on this subject. In this study, numerical modeling of a solar air heater with trapezoidal section artificial roughness was applied to increase heat transfer. The study was carried out at two different roughness rates; It was designed in two dimensions and realized with ANSYS Fluent, a common computational fluid dynamics software. By applying a constant heat flux of 1000 Wm2 on the absorber plate, turbulent flow was modeled with 10 different values between 4000 and 13000 Reynolds number. As a result of the study, an increase of 1.3 to 2.3 times in the Nusselt number was observed compared to the smooth surface. The maximum thermohydraulic performance parameter was obtained with a value of 1.55. It has also been emphasized that artificial roughnesss can be used to increase heat transfer.

 Although solar air heaters are widely used, their heat transfer efficiency is low. A number of studies are being conducted on this subject. In this study, numerical modeling of a solar air heater with trapezoidal section artificial roughness was applied to increase heat transfer. The study was carried out at two different roughness rates; It was designed in two dimensions and realized with ANSYS Fluent, a common computational fluid dynamics software. By applying a constant heat flux of 1000 Wm2 on the absorber plate, turbulent flow was modeled with 10 different values between 4000 and 13000 Reynolds number. As a result of the study, an increase of 1.3 to 2.3 times in the Nusselt number was observed compared to the smooth surface. The maximum thermohydraulic performance parameter was obtained with a value of 1.55. It has also been emphasized that artificial roughnesss can be used to increase heat transfer.

 Güneş destekli hava ısıtıcıları yaygın olarak kullanılmasıyla birlikte, ısı transferi verimleri düşüktür. Bu konuda bir dizi araştırma yürütülmektedir. Bu çalışmada ısı transferini arttırmak için trapez kesit yapay pürüzlülük uygulanan güneş destekli hava ısıtıcısının sayısal modellemesi yapılmıştır. Çalışma iki farklı pürüzlülük oranında; iki boyutlu olarak tasarlanmış ve yaygın bir hesaplamalı akışkan dinamiği yazılımı olan ANSYS Fluent ile gerçekleştirilmiştir. Yutucu plaka üzerine 1000 Wm2 sabit ısı akısı uygulanarak 4000 ile 13000 Reynolds sayısı aralığında 10 farklı değer ile türbülanslı akış modellenmiştir. Çalışma sonucunda düz yüzeye göre Nusselt sayısında 1,3 ile 2,3 kat arasında artış gözlemlenmiştir. 1,55 değeri ile maksimum termohidrolik performans parametresi elde edilmiştir. Ayrıca yapay pürüzlülüklerin ısı transferini arttırmada kullanılabilir olduğu vurgulanmıştır.

Article Details

Modeling of Trapezoidal Section Artificial Rough Solar Air Heater

Authors:

Abdülkadir Koçer

Publisher:

Gazi University

Main Topics:

Enerji Üretimi | Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç)

Journal:

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji Vol.12 Issue 3, pp.570-578

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328731

pISSN:

2147-9526

Air heater

Trapezoidal section

solar energy

energyHava ısıtıcı

Trapez kesit

güneş enerjisi

enerji

Issues

Article Details

Authors: Abdülkadir Koçer

Publisher: Gazi University

Main Topics: Enerji Üretimi | Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç)

Journal: Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji Vol.12 Issue 3, pp.570-578

Document Type: Article

Publication Date: 9/2024

Document Language: Turkish

Document ID (Org No.): 2001328731

pISSN: 2147-9526

Issues

Authors:

Abdülkadir Koçer

Publisher:

Gazi University

Main Topics:

Enerji Üretimi | Dönüşüm ve Depolama (Kimyasal ve Elektiksel hariç)

Journal:

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji Vol.12 Issue 3, pp.570-578

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328731

pISSN:

2147-9526