The Effect of Nanoparticles on Thermal Efficiency of Double Tube Heat Exchangers in Turbulent Flow

Aghayari, Reza; Madah, Heydar; Keyvani, Bahram; Moghadassi, Abdolreza; Ashori, Fatemeh

doi:10.1155/2014/274560

Cited by 10 publications

(7 citation statements)

References 12 publications

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“…R.Aghayari [17] on the other hand examined the heat transfer coefficient of nanofluids in double tube heat exchanger with turbulent flow and the relevant effective parameters. The experimental results showed a significant 8%–10% rise in the overall heat transfer coefficient.…”

Section: Introductionmentioning

confidence: 99%

Enhancement the performance of swirl heat exchanger by using vortices and NanoAluminume

Hashim

Hoshi

Al-Salihi

2019

Heliyon

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Heat exchangers are widely used in many industrial applications. It is well known that the effectiveness of these exchangers is normally measured by the amount of the heat transfer, which should be minimized as much as possible according to their size. Present study pays more attention to examine Taylor vortex which formed in the flow of the hot water of the smooth surface heat exchanger and a swirl flow of cold air. Also, an attempt was made to improve the result by replacing the heat transfer surface by Nanoaluminume metal. Experimental results revealed that the effectiveness of the exchanger at the ratio (C min /C max = 0.08) could be enhanced the effectiveness of the standard exchanger at the ratio (C min /C max = 0). Further, it was found that using nano Aluminume as a medium material for heat transfer increased the effectiveness (3.2%, 4.3% and 4.58%) for a rotational speed of inner cylinder which were used (0, 65and 80) rpm, respectively.

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Section: Introductionmentioning

confidence: 99%

Enhancement the performance of swirl heat exchanger by using vortices and NanoAluminume

Hashim

Hoshi

Al-Salihi

2019

Heliyon

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“…Besides, the viscosity at nanoparticle concentration of 10 % of weight was 30 to 40 % higher , when compared to the one of POE. Aghayari, Madah [97] carried out research to study the impacts of temperature and nanoparticles concentration on the variation of heat transfer and coefficient of overall heat transfer in a countercurrent double tube heat exchanger with turbulent flow. It was reported that the heat transfer and the coefficient of overall heat transfer of the heat exchanger that contains nanoaluminum oxide with ca.…”

Section: Literature Review On Thermodynamic Effects Of Nanoparticles ...mentioning

confidence: 99%

Thermodynamic study of the effects of nanoparticles on thermal origin: A review

Wahhab

Ghorbani

2023

THERM SCI

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According to ISO and ASTM specifications, nanoparticles are described as the particles with a size in the range of 1-100 with one or more dimensions, being the base of nanotechnology. In this study, a comprehensive review on the thermodynamic effects of nanoparticles on thermal origin is carried out. Firstly, the classification of nanoparticles, which includes organic, inorganic and carbon-based nanoparticles are introduced. Then, various applications of nanoparticles in many fields including cosmetics, sunscreens, electronics, catalysis, mechanics, manufacturing, materials, environment and energy harvesting are briefly highlighted. A comprehensive review on the recent research trends on the impacts of nanoparticles on thermal origin is collected and summarized. Afterwards, the physical, chemical, and thermal properties of nanoparticles are highlighted. In the end, a conclusion is withdrawn.

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“…The larger the coefficient, the easier heat is transferred from its source to the product being heated. In a heat exchanger, the relationship between the overall heat transfer coefficient (U) and the heat transfer rate (Q) can be demonstrated by the following Equation 2 [6]. Q=UA ).…”

Section: B Performance Analysismentioning

confidence: 99%

Performance Analysis of Shell and Tube Type Heat Exchanger Using Aluminium Oxide (Al2O3) Nano-Particle

Singh¹

2021

IJRASET

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Research in convective heat transfer using suspensions of nanometer sized solid particles in a base fluid started only over the past decade. Recent investigations on nanofluids, as such suspensions are often called, indicate that the suspended nanoparticles markedly change the transport properties and heat transfer characteristics of the suspension. The very first part of the research work summarizes about the various thermo physical properties of Al2O3 Nanofluid. In evacuated tube solar water heating system nanofluids are used as primary fluid and DM water as secondary fluid in Shell and Tube Heat Exchanger. The experimental analysis of Shell and Tube heat exchanger integrated with Evacuated tube solar collector have been carried out with two types of primary fluids. Research study of shell and tube heat exchanger is focused on heat transfer enhancement by usage of nano fluids. Conventional heat transfer fluids have inherently low thermal conductivity that greatly limits the heat exchange efficiency. The result of analysis shows that average relative variation in LMTD and overall heat transfer coefficient is 24.56% and 52.0% respectively. The payback period of system is reduced by 0.4 years due to saving is in replacement cost of Evacuated Tube Collector. Keywords: ETC; Nanofluid; LMTD; Thermal Conductivity; Overall heat transfer coefficient

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The Effect of Nanoparticles on Thermal Efficiency of Double Tube Heat Exchangers in Turbulent Flow

Cited by 10 publications

References 12 publications

Enhancement the performance of swirl heat exchanger by using vortices and NanoAluminume

Enhancement the performance of swirl heat exchanger by using vortices and NanoAluminume

Thermodynamic study of the effects of nanoparticles on thermal origin: A review

Performance Analysis of Shell and Tube Type Heat Exchanger Using Aluminium Oxide (Al2O3) Nano-Particle

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