Thermal performance improvement of shell and helical coil heat exchanger
[ X ]
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Altınbaş Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Nowadays, energy consumption increases so it is necessary to enhance the efficiency and
performance of heat energy transition. The effects of perforated twisted tape on heat transfer
factor, effectiveness, Nusselt number, and pressure drop are studied numerically. Modeling of
HE with the perforated twisted tape is applied where finite volume manner is utilized to
perform the setup and complete the solution. Validation of numerical results and experimental
previous results is done and there is an excessive settlement between the numerical and
experimental results. The range of Res is from 3800 to 18000. The results indicated that the U
rises with the rise of Re where the perforated twisted tape achieves the extreme improvement
of heat transfer coefficient achieving the numbers from 965 to 1250 W/m2K. The perforated
twisted tape has the highest ratio of enhancing Nu following the numbers from 65 to 115 and
this can be explained as the velocity rises, the turbulence level increases. HE effectiveness
increases with the growth of Re where the perforated twisted tape attained the supreme
enhancement of effectiveness reaching the numbers from 0.35 to 0.85. It is indicated that the
twisted tape configuration has the maximum ratio of ΔP increase as the complicity of twisted
tape rise the ΔP. Contours and streamlines of hot and cold water cross the HE explains the
distributions of temperature, velocity, and pressure.
Açıklama
Anahtar Kelimeler
HE, Perforated Twisted Tape, Thermal Performance, Helical Coil
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Abed, T. H. (2021). Thermal performance improvement of shell and helical coil heat exchanger (Yayınlanmış yüksek lisans tezi). Altınbaş Üniversitesi, Lisansüstü Eğitim Enstitüsü, İstanbul.
