Abstract
This paper describes experimental investigations on convective heat transfer in counter flow double pipe heat exchanger under transverse vibration for single-phase flow with twisted tape insert in the inner tube. Experiments were conducted on twisted tape inserted counter flow double pipe heat exchanger under vibration for twist ratio from 7 to 17, amplitude from 23 to 69 mm, frequency from 20 to 100 Hz and Reynolds number (Re) changing from 10710 to 21420. A maximum gain of 91% in Nusselt number (Nu) was obtained at 40 Hz frequency and 69 mm amplitude for twist ratio of 7 and Re of 10710. The maximum value of performance evaluation criteria with compound enhancement technique on double pipe heat exchanger reached 1.38 in turbulent flow conditions. Empirical correlations for Nu were developed and predicted values were found to be within ± 9% of experimental values for both frequency ranges.
Keywords
Heat exchanger Counter flow Heat transfer enhancement Nusselt number Vibration Twisted tape insert
References
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Abstract
References
- The article references can be accessed from the .pdf file.
Details
| Primary Language | English |
|---|---|
| Subjects | Thermodynamics and Statistical Physics |
| Journal Section | Articles |
| Authors | |
| Publication Date | November 18, 2021 |
| Submission Date | February 18, 2021 |
| Published in Issue | Year 2021 |
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IMPORTANT NOTE: JOURNAL SUBMISSION LINK http://eds.yildiz.edu.tr/journal-of-thermal-engineering