TY - JOUR
T1 - Thermal hydraulic characteristics of turbulent single-phase flow in an enhanced tube using louvered strip insert with various slant angles
AU - Yaningsih, Indri
AU - Wijayanta, Agung Tri
AU - Miyazaki, Takahiko
AU - Koyama, Shigeru
N1 - Funding Information:
The present study is partially supported by a grant from the Institute for Research and Community Services, Universitas Sebelas Maret (UNS), Surakarta, Indonesia. The authors would like to express our deep gratitude to Mr. Tri Istanto for his valuable suggestion. The authors wish to thank Mr. Indra Setyawan and all members of Heat Transfer and Thermodynamics laboratory, UNS for their assistance during experiments.
Publisher Copyright:
© 2018 Elsevier Masson SAS
PY - 2018/12
Y1 - 2018/12
N2 - Effect of slant angle (α) of louvered strip insert on single-phase forced convection heat transfer and friction factor of internal flow was investigated experimentally. The parameter of slant angles (α) 15° 20° and 25° was examined at the Reynolds number (Re) of 5300–17,500. The plain tube was also performed for comparison. The results show that the louvered strip insert provided the increases in heat transfer and friction factor up to 77.02% and 3.35 times above the plain tube. The results also indicate that heat transfer and friction factor increased with increasing slant angle. The highest slant angle yielded the highest thermal performance factor in the value of 1.12. Empirical correlations were also developed for Nusselt number and friction factor based on experimental data.
AB - Effect of slant angle (α) of louvered strip insert on single-phase forced convection heat transfer and friction factor of internal flow was investigated experimentally. The parameter of slant angles (α) 15° 20° and 25° was examined at the Reynolds number (Re) of 5300–17,500. The plain tube was also performed for comparison. The results show that the louvered strip insert provided the increases in heat transfer and friction factor up to 77.02% and 3.35 times above the plain tube. The results also indicate that heat transfer and friction factor increased with increasing slant angle. The highest slant angle yielded the highest thermal performance factor in the value of 1.12. Empirical correlations were also developed for Nusselt number and friction factor based on experimental data.
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U2 - 10.1016/j.ijthermalsci.2018.08.025
DO - 10.1016/j.ijthermalsci.2018.08.025
M3 - Article
AN - SCOPUS:85051753294
SN - 1290-0729
VL - 134
SP - 355
EP - 362
JO - International Journal of Thermal Sciences
JF - International Journal of Thermal Sciences
ER -