Experimental investigation of hybrid nanofluid inlet temperature on the oval tube heat exchanger (OTHe) performance

被引：0

作者：

Gurugubelli, Sasidhar ^{[1
]}

Lavanya, K. V. ^{[2
]}

Rao, Yarrapragada K. S. S. ^{[3
]}

Balaga, Ravikiran ^{[4
]}

Syed, Javed ^{[5
]}

机构：

[1] GMRIT, Dept Mech Engn, Rajam, India

[2] Sankethika Vidya Parishad Engn Coll, Mech Engn Dept, Visakhapatnam, India

[3] Aditya Univ, Dept Mech Engn, Surampalem, India

[4] Andhra Univ, AU Coll Engn, Dept Mech Engn, Visakhapatnam, India

[5] King Khalid Univ, Dept Mech Engn, Abha, Saudi Arabia

来源：

EXPERIMENTAL HEAT TRANSFER | 2025年

关键词：

Hybrid nanofluid; oval tube; effect of MWCNT/Fe2O3 concentration; effect of inlet temperature; enhancement factor; TRANSFER ENHANCEMENT; PRESSURE-DROP; CROSS-FLOW; DESIGN; RESISTANCE; PLAIN; WATER;

D O I：

10.1080/08916152.2025.2518984

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study investigates using hybrid nanofluids, specifically MWCNTs and Fe2O3, to improve convective heat transfer in an innovative elliptical oval tube heat exchanger. The research examines the effects of varying concentrations (0.01% to 0.025%) and inlet temperatures (35 degrees C to 55 degrees C) on heat transfer efficiency and pressure drop. Results indicate that the oval tube design enhances secondary flow, reducing thermal boundary layer thickness and increasing the Nusselt number by up to 15.1%. The findings emphasize the need to optimize nanoparticle concentration and temperature to balance heat transfer performance and pumping power, underscoring the significance of advanced heat exchanger designs.

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页数：20

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