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Abdolreza Moghadassi

Abdolreza Moghadassi

Academic rank: Professor
ORCID: https://orcid.org/0000-0003-0733-4540
Education: PhD.
ScopusId: 25959677500
HIndex:
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
The Effect of Nanoparticles on Thermal Efficiency of Double Tube Heat Exchangers in Turbulent Flow
Type
JournalPaper
Keywords
Nanoparticles , Thermal Efficiency , Double Tube Heat Exchangers , Turbulent Flow
Year
2014
Journal ISRN Mechanical Engineering
DOI
Researchers Reza Aghayari ، Heydar Madah ، Bahram Keyvani ، Abdolreza Moghadassi ، Fatemeh Ashori

Abstract

This paper refers to the Overall Heat Transfer Coefficient of Nano Fluids (OHTCNF) in heat exchangers and the relevant effective parameters. An improvement in Heat Transfer (HT) and OHTCNF containing nanoaluminum oxide with ca. 20 nm particle size and particular volume fraction in the range of 0.001-0.002 has been reported. The effects of temperature and concentration of nanoparticles on HT variation as well as Overall Heat Transfer Coefficient (OHTC) in a countercurrent double tube heat exchanger with turbulent flow have been studied. The experimental results show a remarkable 8%–10% rise in the mean HT and the OHTC. Accordingly, with an increase in the processing temperature and/or particle concentration the OHTC was observed to increase.