Enhancement of Double-Pipe Heat Exchanger Effectiveness by Using Water- CuO

Hussein, Adnan M.; Khaleell, Omar Sadoon; Danook, Suad Hassan

doi:10.56286/ntujet.v1i2.59

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cold fluids see less of a temperature drop between their entry and departure locations as the Reynolds number increases. It explains why high-mass heating leads the Reynolds number to rise proportionally with the increase in the flow accelerator [18]. 5 depicts Nusselt numbers against Reynolds number when the volume concentration is varied from 0.1 to 0.5%.…”

Section: Resultsmentioning

confidence: 99%

Efficiency Improvement of Double Pipe Heat Exchanger by using TiO2/water Nanofluid

Diyar F. Hussein,

Yaser Alaiwi

2023

CFDL

View full text Add to dashboard Cite

Heat exchangers are commonly utilized to transfer heat between two fluids in a number of industries. However, parameters such as fluid flow velocity, temperature difference, and thermal conductivity limit their efficiency. Researchers have investigated the use of nanofluids - fluids containing nanoparticles that boost thermal characteristics - to improve the performance of heat exchangers. The use of nanofluids can improve the efficiency of double-pipe heat exchangers. However, research on the influence of TiO2/water nanofluid on the performance of double-pipe heat exchangers is insufficient. The purpose of this research is to investigate the impact of TiO2/water nanofluid on the efficiency of a double-pipe copper counter-flow heat exchanger. A double-pipe copper counter-flow heat exchanger using cold (room temperature) and hot (70°C) water as working fluids was used in an experimental investigation. They created nanofluids by adding varying concentrations (0.1%, 0.3%, and 0.5%) of TiO2 nanoparticles to water and measuring their heat conductivity and viscosity. They then calculated the overall heat transfer coefficient and efficacy by measuring the input and outlet temperatures as well as the flow rates of both fluids. It was discovered that adding TiO2 nanoparticles to water enhanced its heat conductivity and viscosity substantially. The overall heat transfer coefficient increased up to 0.3% but declined at 0.5% nanoparticle concentration. At a nanoparticle concentration of 0.3%, the maximum effectiveness was attained, with a corresponding increase in efficiency of up to 23%. The scientists found that using TiO2/water nanofluid to improve the efficiency of double-pipe heat exchangers is a viable option.

show abstract

Section: Resultsmentioning

confidence: 99%

Efficiency Improvement of Double Pipe Heat Exchanger by using TiO2/water Nanofluid

Diyar F. Hussein,

Yaser Alaiwi

2023

CFDL

View full text Add to dashboard Cite

show abstract

“…Researchers and scientist suggested to identify the amount and type of nanoparticles, as well as the thermophysical properties of the fluid, therefore all play a role in utilization of FPSC. The following formulas can be used to compute a substance's density, specific heat, viscosity, and thermal conductivity according to Ibrahim et al [30], Hussein et al [31] and Saleh et al [32].…”

Section: Nanofluids Propertiesmentioning

confidence: 99%

Enhancement of thermal efficiency of nanofluid flows in a flat solar collector using CFD

Zarda¹,

Hussein²,

Danook³

et al. 2022

Diagnostyka

View full text Add to dashboard Cite

Flat plate solar collector (FPSC) is popular for their low cost, simplicity, and ease of installation and operation. In this work, FPSC thermal performance was analyzed. It's compared to diamond/H2O nanofluids. The volume percentage and kind of nanoparticles are analyzed numerically that validation with experimental data available in the literature. The hot climate of Iraq is employed to approximate the model. The numerical study is performed by using ANSYS/FLUENT software to simulate the case study of problem. Due to less solar intensity after midday, temperatures reduction. The greatest collector thermal efficiency is 68.90% with 1% ND/water nanofluid, a 12.2% increase over pure water. The efficiency of 1% nanofluid is better than other concentrations because of a change in physical properties and an increase in thermal conductivity. Since the intensity of radiation affects the outlet temperature from the solar collector and there is a direct link between them, this increases the efficiency of the solar collector, especially around 12:30 pm at the optimum efficiency.

show abstract

“…Numerous investigators have conducted experiments related to convective heat transfer in turbulent and laminar nanofluid flows through tubes [22][23][24]. These studies employed water and nanoparticles of copper oxide (CuO), aluminum oxide (Al2O3), and titanium dioxide (TiO2), and proposed correlations of the Nusselt number.…”

Section: Introductionmentioning

confidence: 99%

Friction Factor and Heat Transfer Enhancement of Hybrid Nanofluids in a Heated Circular Tube

Ali,

Alsaffawi

2023

IJHT

View full text Add to dashboard Cite

This work investigates the potential of hybrid nanoparticles suspended in pure water to enhance the thermal performance of heat exchangers at minimal weight fractions. A hybrid nanofluid consisting of 50% ZnO and 50% Al2O3 nanoparticles dispersed in pure water at weight fractions of 0.1%, 0.3%, and 0.5% was prepared. An experimental rig, featuring a straight horizontal tube with a constant wall heat flux, was equipped with eight thermocouples positioned at the inlet, outlet, and along the tube's surface. The study focuses on the impact of the hybrid nanofluid on the friction factors and heat transfer coefficients within a Reynolds number range of 5000 to 20000. Observations indicate that the Nusselt number escalates with an increase in the Reynolds number through the horizontal tube, while the friction factor exhibits a converse relationship. The peak Nusselt number and friction factor were observed at a 5% mass fraction of the hybrid nanofluid. Specifically, enhancements in the Nusselt number were recorded at 9%, 11.8%, and 16.7% for the weight fractions of 0.1%, 0.3%, and 0.5% respectively. Additionally, the deviation in the friction factor was noted at 2.3%, 3.6%, and 4.1% in comparison to pure water. This study thus provides critical insights into the role of hybrid nanofluids in optimizing heat transfer in heat exchangers.

show abstract

Enhancement of Double-Pipe Heat Exchanger Effectiveness by Using Water- CuO

Cited by 5 publications

References 0 publications

Efficiency Improvement of Double Pipe Heat Exchanger by using TiO2/water Nanofluid

Efficiency Improvement of Double Pipe Heat Exchanger by using TiO2/water Nanofluid

Enhancement of thermal efficiency of nanofluid flows in a flat solar collector using CFD

Friction Factor and Heat Transfer Enhancement of Hybrid Nanofluids in a Heated Circular Tube

Contact Info

Product

Resources

About