Heat Transfer Analysis and Friction Factor of Ternary Nanofluids with Twisted Tape Inserts

Ramadhan, Anwar Ilmar
Azmi, Wan Hamzah
Lasman, As Natio
Umar, Efrizon
Sharma, Korada Viswanatha

Indonesian Journal of Computing, Engineering, and Design
Vol. 6 No. 2 (2024): IJoCED

This study investigates the heat transfer efficiency and friction factor of ternary nanofluids (Al₂O₃-TiO₂-SiO₂) in a simple tube equipped with a twisted tape. Ternary nanofluids, prepared using a volume-based composition ratio of 20:16:64, were tested at various volume concentrations ranging from 0.5% to 3.0%. Forced convection heat transfer experiments were conducted under varying Reynolds numbers (2,300 to 12,000) and a bulk temperature of 70 °C. The results indicate that the maximum viscosity occurs at a volume concentration of 3.0%. The highest increase in heat transfer for ternary nanofluids in a simple tube with twisted tape (H/D = 2.0) was achieved at a volume concentration of 3.0%, reaching 225.35%. Compared to a plain tube, the average thermal performance factor (TPF) of the twisted tape was significantly improved, with a further increase observed when the volume concentration rose from 2.73% to 3.22%.