THERMAL SCIENCE

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Investigation on the enhancement of heat transfer in counterflow double-pipe heat exchanger using nanofluids

ABSTRACT
Particles less than 100 nanometers in size are suspended in a base fluid such as water, oil and ethylene glycol. These nanoparticles are floating in the nanofluid. The purpose of this study is to research the operation of a counter-flowing, double-pipe heat exchanger (DPHE) using two distinct nanofluids as cooling media. Titanium carbide (TiC) and carbon nanotubes (CNT) combine to form alkaline water, a basic fluid. The purpose of this research was to assess the performance of a counterflow DPHE using water with different concentrations of TiC and CNTs. Alkaline water had a particle volume concentration of 0.06, and its nanofluid flow rate was 0.03. Using a heat exchanger, water is heated to 65 degrees Celsius while nanofluids are heated to 35 degrees Celsius, both at a constant input velocity. The speed of both fluids is constant. The findings demonstrate that nanofluid outperforms water in heat absorption across a broad range of flow speeds. Heat exchangers benefit from the improved thermal characteristics of nanoscale fluids.
KEYWORDS
PAPER SUBMITTED: 2023-03-12
PAPER REVISED: 2023-09-16
PAPER ACCEPTED: 2023-10-21
PUBLISHED ONLINE: 2024-01-20
DOI REFERENCE: https://doi.org/10.2298/TSCI230312273V
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