Journal
EXPERIMENTAL THERMAL AND FLUID SCIENCE
Volume 99, Issue -, Pages 251-258Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2018.07.030
Keywords
Twisted oval tube; Heat transfer; Pressure drop; Tube bundle; Cross flow
Funding
- Guangzhou City Science and Technology Project [201604016048]
- Foshan City Science and Technology Innovation Project [2016AG101083]
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences and Heat pump air conditioning increased enthalpy integration technology development (Shunde District of Foshan City Government Office [2014]) [365]
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An experimental research on air side heat transfer and pressure drop performance of twisted oval tube bundle with staggered layout in cross flow is conducted. The comprehensive performance of present twisted oval tube bundle is larger than that of round tube bundle with the same layout by 25.5-33.3% during the experimental range of Re-max (7500-18,000). The economic operation Re-max, among the experimental range is from 7500 to 13,000 for present twist oval tube bundle in cross flow. The correlations for Nusselt number and Euler number deduced from this paper are well compatible with experimental data, which could provide a theoretical reference of twisted oval tube bundle for industrial applications.
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