Carbon nanotube nanofluid in enhancing the efficiency of evacuated tube solar collector

Mahbubul, I.M.; Khan, Mehmood; Ibrahim, Nasiru I.; Ali, Hafız Muhammad; Al‐Sulaiman, Fahad A.; Saidur, R.

doi:10.1016/j.renene.2018.01.006

Cited by 228 publications

(51 citation statements)

References 35 publications

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“…An experiment was carried out to observe efficiency improvement in ETC using SWCNT water nanofluid in a roof-mounted U-tube-ETC with absorption area of approximately 42 m 2 and at an inclination angle of 25° [177]. The study observed that a maximum efficiency improvement of 10% using SWCNT-water nanofluid at 0.2% volume concentration as compared to water under the same conditions.…”

Section: Nanofluids In Evacuated Tube Collectors (Etc)mentioning

confidence: 98%

Nanofluids in Solar Thermal Collectors: Review and Limitations

et al. 2020

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Solar thermal collectors are systems that allow for the use of solar energy in thermal applications. These collectors utilize a heat transfer fluid to transport absorbed solar radiation to applications where they are needed. Scientists in a bid to improve the conversion efficiency of solar collectors have suggested different collector designs and improved collector materials. Over the last 25 years, the study of nanofluids and their applications have revolutionized material science, and nanotechnology has found applications in improving solar collector materials. This article reviews the impact of different nanomaterials on the efficiency of solar collectors. The study also outlines the limitations of applying nanofluids and discusses the long-term challenges of their application to solar collectors. Nanofluids have the potential to improve the overall efficiency of most solar collectors, however, the full potential of nanofluids in heat transfer applications cannot be completely achieved until some of the questions regarding hysteresis, stability, and the overall predictability of nanofluids are answered.

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Section: Nanofluids In Evacuated Tube Collectors (Etc)mentioning

confidence: 98%

Nanofluids in Solar Thermal Collectors: Review and Limitations

et al. 2020

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“…Thermal simulation is important for determining the storage system performance [38,39]. There are various models that have been published for the SSEEs [40][41][42][43][44][45][46].…”

Section: Cell Pn Modelmentioning

confidence: 99%

Comparing lithium-ion battery architecture performances with Colored Petri Net

Savard¹,

Praly

Venet

et al. 2019

SN Appl. Sci.

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Conventionally, the basic cells constituting the multicellular energy storage systems are modeled by electrical schemes based on Thevenin's model. Other, more complex models incorporate the aging phenomena, resulting in a decrease in the State of Health of each cell. All these models remain analytical models and not discrete event systems. In this article, a discrete model is proposed, by detailing how each physical parameter is modeled. It is based on a no-timed Colored High-Level Petri Net. An example of a battery is simulated to validate this theoretical model. Its structure (number of cells) is declined under different architectures (connections between the cells) and is subjected to different resource dynamic allocation strategies. This Petri Net (PN) model makes easy, by adding a sub-network, to simulate different control laws and different resource management algorithms, whether or not allow commutations by forbiding all configurations that do not meet the specification or that will lead to accelerated cell aging. PN is used as a tool for comparing hardware architectures and cell control logic for a battery. Various conventional and innovative architecture are simulate. Different control laws can be compared in terms of performance, as lifespan and use of resources.

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“…Nonspherical silver and graphene/silver are more efficient and increase by 35%. Water-based single-walled carbon nanotube nanofluids with a volume concentration of 0.2% can increase the efficiency of vacuum tube solar collectors by 66% [55]. Water-based CuO and Al 2 O 3 nanofluids can improve the thermal efficiency of parabolic trough collectors [56].…”

Section: Nanofluid In the Collectormentioning

confidence: 99%

Effect of Nanofluids on Boiling Heat Transfer Performance

Yao

Teng

2019

Applied Sciences

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At present, there are many applications of nanofluids whose research results are fruitful. Nanofluids can enhance the critical heat flux, but the effect on boiling heat transfer performance still has disagreement. Base liquids with higher viscosity improve the boiling heat transfer performance of nanofluids. When the base liquid is a multicomponent solution, the relative movement between the different solutions enhances the microscopic movement of the nanoparticles due to the different evaporation order during the boiling process, so that the boiling heat transfer performance is enhanced. Compared with the thermal conductivity of the heated surface, the deposition of the low thermal conductivity nanoparticles reduces the heat dissipation rate of the heated surface and improves the wall superheat. Then the enhancement of the boiling heat transfer coefficient should be attributed to the thermal conductivity improvement of base fluid and the bubble disturbance resulted from the nanoparticle’s microscopic motion.

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Carbon nanotube nanofluid in enhancing the efficiency of evacuated tube solar collector

Cited by 228 publications

References 35 publications

Nanofluids in Solar Thermal Collectors: Review and Limitations

Nanofluids in Solar Thermal Collectors: Review and Limitations

Comparing lithium-ion battery architecture performances with Colored Petri Net

Effect of Nanofluids on Boiling Heat Transfer Performance

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