Determination of pressure drop of pure water flowing upward direction in a double tube heat exchanger having smooth and microfin tubes
Conference proceedings article
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Author list: วebi A., Celen A., Dalkili็ A.S., Sevindir M.K., Wongwises S.
Publisher: American Society of Mechanical Engineers (ASME)
Publication year: 2014
Volume number: 1B
ISBN: 9780791846223
ISSN: 0888-8116
eISSN: 0888-8116
Languages: English-Great Britain (EN-GB)
Abstract
Single phase friction factor and pressure drop behavior of smooth and microfin tubes are studied experimentally. The vertical test section was working as a counter flow double tube heat exchanger with water flowing in the inner smooth and microfin tubes having varying inner diameters and cooling water flowing in the annulus. Pressure drop of water due to cooling in upward flow in inner tubes is determined by experiments. Inner tube mass flow rate was between 0.023 kg/s to 0.100 kg/s while test section inlet temperatures were 40ฐC and 60ฐC. Effect of Reynolds number on pressure drop is also investigated and Blasius type friction factor correlations are developed for both smooth and microfin tubes. Copyright ฉ 2014 by ASME.
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