Second Law analysis in concentric heat exchangers with vortex flow generators
Küçük Resim Yok
Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Energy Education Science and Technology
Erişim Hakkı
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-ShareAlike 3.0 United States
Attribution-NonCommercial-ShareAlike 3.0 United States
Özet
In the present study, the experimental results of heat transfer of a concentric tube heat exchanger were analyzed with respect to Second Law of Thermodynamics to reach the geometric optimal design of the heat exchangers. In order to increase the heat transfer, the vortex generators were placed in the entrance of the inner pipe of the heat exchanger. These vortex generators are 60 mm in diameter having six angled (55°, 65°, 75°, 90°) winglets. The winglets have one rectangular slot in each and are 2×7 mm in dimensions. Experiments were carried out with different Reynolds Numbers. Air as hot fluid and water as cold fluid were passed through the inner pipe and outer pipe of the concentric tube heat exchanger, respectively. The variations of the efficiency and Entropy Generation Number with respect to Reynolds Number are shown in graphics, and the results were discussed.
Açıklama
Anahtar Kelimeler
Kaynak
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
28
Sayı
1
Künye
Argunhan, Z., Çakmak, G., Yıldız, C., Behçet, R. (2011). Second Law analysis in concentric heat exchangers with vortex flow generators. Energy Education Science and Technology Part A: Energy Science and Research, 28 (1), pp.285-292.
