Finite element analysis of double pipe heat exchanger using nanofluidsViswanadhapalli Balaji, Sridhar Padala, Sanjeev Kumar Josh, Muntadar Muhsen, Satyendra Singh, Baxtjon Isroilova and Dildora IsrailovaE3S Web Conf., 563 (2024) 01004DOI: https://doi.org/10.1051/e3sconf/202456301004