TY - CONF
T1 - Airside performance of smooth wavy fin-and-tube heat exchangers with large diameter tube
AU - Sheu, Wen Jenn
AU - Hsu, Chen Chieh
AU - Wang, Chi-Chuan
N1 - Publisher Copyright:
© ACRA 2018 - 9th Asian Conference on Refrigeration and Air-Conditioning. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In this study, the airside performance, in terms of heat transfer performance and frictional characteristics, of the sinusoidal wavy fin-and-tube heat exchangers are experimentally investigated. The test samples contain a tube diameter of 16.3 mm, a transverse tube pitch of 38.1 mm, a longitudinal tube pitch 33 mm, and the number of tube row ranges from 2 to 6. The corresponding fin pitch is 3 and 1.8 mm, respectively and the frontal velocity varies from 1 to 6 m/s. Test results indicate that negligible influence of fin pitch on the heat transfer performance when the number of tube row is 2 or 4. However, the heat transfer performance for the larger fin pitch (3 mm) are about 10-15% higher than those of 1.8 mm. The friction factor is also relatively independent of the number of tube row. The existing correlation applicable for sinusoidal wavy fin geometry over-predicts the present test data considerably.
AB - In this study, the airside performance, in terms of heat transfer performance and frictional characteristics, of the sinusoidal wavy fin-and-tube heat exchangers are experimentally investigated. The test samples contain a tube diameter of 16.3 mm, a transverse tube pitch of 38.1 mm, a longitudinal tube pitch 33 mm, and the number of tube row ranges from 2 to 6. The corresponding fin pitch is 3 and 1.8 mm, respectively and the frontal velocity varies from 1 to 6 m/s. Test results indicate that negligible influence of fin pitch on the heat transfer performance when the number of tube row is 2 or 4. However, the heat transfer performance for the larger fin pitch (3 mm) are about 10-15% higher than those of 1.8 mm. The friction factor is also relatively independent of the number of tube row. The existing correlation applicable for sinusoidal wavy fin geometry over-predicts the present test data considerably.
KW - Coburn j factor
KW - Fin-and-tube heat exchanger
KW - Friction factor
KW - Sinusoidal wavy fin
UR - http://www.scopus.com/inward/record.url?scp=85058151824&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85058151824
T2 - 9th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2018
Y2 - 10 June 2018 through 13 June 2018
ER -