Experimental study on the heat transfer enhancement of MWNT-water nanofluid in a shell and tube heat exchanger |
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Authors: | Roghayeh Lotfi Ali Morad RashidiAzadeh Amrollahi |
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Affiliation: | Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sports Complex, P.O.Box 14665-1998, Tehran, Iran |
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Abstract: | Heat transfer enhancement of multi-walled carbon natube(MWNT)/water nanofluid in a horizontal shell and tube heat exchanger has been studied experimentally. Carbon nanotubes were synthesized by the use of catalytic chemical vapor deposition (CCVD) method over Co–Mo/MgO nanocatalyst. Obtained MWNTs were purified using a three stage method. COOH functional groups were inserted for making the nanotubes hydrophilic and increasing the stability of the nanofluid. The results indicate that heat transfer enhances in the presence of multi-walled nanotubes in comparison with the base fluid. |
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Keywords: | Nanofluids Multi-walled carbon nanotubes (MWNTs) Heat transfer enhancement Shell and tube heat exchanger |
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