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Copper oxide-based nanofluids for the shell and tube heat exchanger: performance analysis

  • Puranjay Pratap , Ravi Shankar EMAIL logo , Brijesh Kumar Pandey EMAIL logo and Prateek Khare EMAIL logo
Published/Copyright: May 2, 2025

Abstract

The STHE is most widely used in industrial applications. HE transfers energy (heat) between hot and cold fluids in a stipulated period with higher efficacy. The performance of HE depends upon the operating parameters as well as the properties of the fluid used in the application. In this article, h, Q, pressure drop, and effectiveness of STHE have been studied with CuO/water NFs (0.002 wt.%) for variable volumetric flow rate. The effect of CuO dose in the distilled water has also been studied in terms of thermophysical properties µ, ρ, C p , k and compare their value with the tap and distilled water. The h, Q, pressure drop, and effectiveness of STHE were studied for the cold fluid (NF) of 30 °C and hot fluid (water) range of 50–80 °C. The HE performance was studied for hot and cold fluid velocity ranges of 2–4 L/min for both side fluids. The study states that the h and Q increase with air flow rate and noted maximum at the hot and cold fluid rate of 4 L/min. At this flow rate, h of 404.18, 411.16, 418.61, 441.14 W/m2K and Q of 2.78, 3.89, 5.56, 6.11 KW have been noted for inlet hot fluid temperatures of 50, 60, 70, and 80 °C respectively. The effectiveness of STHE of w-NFs was observed by 45.4, 40.09, 38.28, and 36.67 % at higher flow rates and 50, 60, 70, and 80 °C respectively in comparison with the w-w experimental approach. The current study states that the Q and h with NF are enhanced by 19.73, 22.71, 27.73 & 47.16 % and 33.58, 44.45, 49.25 & 50.53 % for hot fluid temperatures of 50, 60, 70 and 80 °C respectively in comparison with hot water.


Corresponding authors: Ravi Shankar and Prateek Khare, Department of Chemical Engineering, M.M.M. University of Technology, Gorakhpur, 273010, Uttar Pradesh, India, E-mail: (R. Shankar), (P. Khare); and Brijesh Kumar Pandey, Department of Physics and Material Science, M.M.M. University of Technology, Gorakhpur, 273010, Uttar Pradesh, India, E-mail:

Funding source: Council of Science and Technology Uttar Pradesh (CST-UP), India

Award Identifier / Grant number: CST/D-1266

Acknowledgments

The authors would like to acknowledge the kind support of the ‘Council of Science and Technology’ Uttar Pradesh, India, Project no. and title “ CST/D-1266, Synthesis of metallic nanofluids of high thermal conductivity and preparation of high-quality coolant for motor vehicles and machines” and to extend all possible help in carrying out this research work directly or indirectly.

  1. Research ethics: The paper reflects the authors’ own research and analysis in a truthful and complete manner.

  2. Informed consent: Not applicable.

  3. Author contributions: Puranjay Pratap-Data Curation, Initial drafting, editing; Brijesh Kumar Pandey – Formal analysis, Supervision; Ravi Shankar-Supervision, Original drafting, editing, conceptualization; Amit K. Thakur – Data validation.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The author’s declared there is no conflict of interest.

  6. Research funding: This research received specific grant no. CST/D-1266 and funding agency “Council of Science and Technology, U.P”.

  7. Data availability: Data will be made available on request.

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Received: 2024-11-09
Accepted: 2025-04-18
Published Online: 2025-05-02

© 2025 Walter de Gruyter GmbH, Berlin/Boston

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