The effect of pressure on heat transfer during pool boiling of water-Al2O3 and water-Cu nanofluids on stainless steel smooth tube

• Authors: Janusz Cieśliński , Tomasz Kaczmarczyk
• Languages of publication: EN

Abstracts

EN

Experimental investigation of heat transfer during pool boiling of two nanofluids, i.e. water-Al2O3 and water-Cu has been carried out. Nanoparticles were tested at the concentration of 0.01%, 0.1%, and 1% by weight. The horizontal smooth stainless steel tubes having 10 mm OD and 0.6 mm wall thickness formed the test heater. The experiments have been performed to establish the influence of nanofluids concentration on heat transfer characteristics during boiling at different absolute operating pressure values, i.e. 200 kPa, ca. 100 kPa (atmospheric pressure) and 10 kPa. It was established that independent of nanoparticle materials (Al2O3 and Cu) and their concentration, an increase of operating pressure enhances heat transfer. Generally, independent of operating pressure, sub- and atmospheric pressure, and overpressure, an increase of nanoparticle concentration caused heat transfer augmentation.

Keywords

EN

pool boiling; nanofluids; operating pressure

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2011
• Volume: 32
• Issue: 4
• Pages: 321-332

Dates

published

1 - 12 - 2011

online

15 - 2 - 2012

Contributors

author

Janusz Cieśliński

• Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

author

Tomasz Kaczmarczyk

• Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

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Identifiers

DOI

10.2478/v10176-011-0026-2