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Rashmi Rekha SAHOO Pradyumna GHOSH


In the present study, screening of various coolants (water, ethylene glycol, propylene glycol, brines, nanofluid and sugarcane juice) for louvered  fin automotive radiator has been done based on different energetic and exergetic performance parameters. Effects on radiator size, weight and cost as well as engine efficiency and fuel consumption are discussed as well. Results show that the sugarcane juice seems to be slightly better in terms of both heat transfer and pumping power than water and nanofluid, whereas significantly better than EG and PG. For same heat transfer capacity, the pumping power requirement is minimum and vice-versa with sugarcane juice, followed by nanofluid, water, EG and PG. Study on brines shows an opportunity to use water+25%PG based nanofluids for improvement of performance as well as operating range. Replacement of water or brines by using sugarcane juice and water or water+25%PG based nanofluids will reduce the radiator size, weight and pumping power, which may lead to increase in compactness and overall engine efficiency or reduction in radiator cost and engine fuel consumption. In overall, both sugarcane juice and nanofluid seem to be potential substitutes of water. However, both have some challenges such as long term stabiliy for practical use.

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SAHOO, Rashmi Rekha; GHOSH, Pradyumna. PERFORMANCE COMPARISON OF VARIOUS COOLANTS FOR LOUVERED FIN TUBE AUTOMOTIVE RADIATOR. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <>. Date accessed: 24 june 2017. doi:
Received 2017-03-02
Accepted 2017-03-13
Published 2017-03-13


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