Nanofluids, comprised of metallic or non-metallic nanoparticles in conventional base fluids, improve heat transfer in diverse industries. Cleanrooms are vital for managing airborne contamination and environmental conditions. This study explores the heat transfer properties of CuO+Water nanofluid at various concentrations (1%, 2%, 3% and 4%) within a prototype cleanroom air handling chiller unit under laminar flow conditions. Experimental investigation demonstrates improved heat transfer properties compared to water, with notable enhancements achieved by reducing nanoparticle size from 50nm to 10nm and increasing concentration from 1% to 4% volume. This resulted in a significant 64.44% increase in Nusselt number compared to water at higher Reynolds numbers. Manipulating nanoparticle characteristics yielded substantial improvements in Nusselt number across a wide range of Reynolds numbers, emphasizing the significance of smaller particle sizes and higher volume concentrations. The novelty of the work lies in its examination of variable CuO+Water nanofluid concentrations, encompassing diverse nanoparticle sizes and volume concentrations, offering valuable insights into optimizing heat transfer efficiency in controlled environments and addressing a pertinent research gap.

cleanroom, nanoparticle, nanofluid, CuO+Water, heat transfer.

Received: April 13, 2024; Accepted: May 15, 2024; Published: June 3, 2024

How to cite this article: Sujoy Kumar Dolui, A. Veeresh Babu and T. Srinivas Reddy, Experimental investigation of CuO+Water nanofluid concentrations on heat transfer parameters in cleanroom air handling units, JP Journal of Heat and Mass Transfer 37(3) (2024), 329-348. https://doi.org/10.17654/0973576324023

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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