Heat transfer characteristics of silver/water nanofluids in a shell and tube heat exchanger

• Autorzy: Godson L. , Deepak K. , Enoch C. , Jefferson B. , Raja B.

Identyfikatory

DOI

10.1016/j.acme.2013.08.002

• Języki publikacji: EN

Abstrakty

EN

An experimental study is carried out to investigate the heat transfer characteristics of silver/water nanofluids in a shell and tube heat exchanger. The test matrix is worked out in the turbulent regime with Reynolds number varying between 5000 and 25,000, particle volume concentrations of 0.01%, 0.03% and 0.04% and for heat flux varied between 800 W/m2 and 1000 W/m2, which is sourced from a solar flat plate collector. The influence of mass flow rate, inlet temperature and volume concentration on the LMTD, effectiveness, convective heat transfer coefficient and pressure drop are studied. The results showed an increase in convective heat transfer coefficient and effectiveness of silver/water nanofluids as the particle volume concentration is increased. A maximum enhancement in convective heat transfer coefficient of 12.4% and effectiveness of 6.14% is recorded. It is also observed that the apparent increase in the heat transfer coefficient is due to the enhanced thermo-physical properties of the nanofluids, and delayed development of boundary layer in the entrance regions due to the addition of nanoparticles.

Słowa kluczowe

EN

silver; nanoparticles; shell and tube heat exchanger; convection; heat transfer

PL

srebro; nanocząsteczka; konwekcja; wymiana ciepła

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2014
• Tom: Vol. 14, no. 3
• Strony: 489--496
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Godson L.

• Department of Mechanical Engineering, Karunya University, Coimbatore 641114, Tamil Nadu, India

autor

Deepak K.

• Department of Mechanical Engineering, Karunya University, Coimbatore 641114, Tamil Nadu, India

autor

Enoch C.

• Department of Mechanical Engineering, Karunya University, Coimbatore 641114, Tamil Nadu, India

autor

Jefferson B.

• Department of Mechanical Engineering, Karunya University, Coimbatore 641114, Tamil Nadu, India

autor

Raja B.

• Indian Institute of Information Technology, Design and Manufacturing (IIITD&M)-Kancheepuram, Chennai 600048, India

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