Applications of nanofluids containing carbon nanotubes in solar energy systems: A review

Ghalandari, Mohammad; Maleki, Akbar; Haghighi, Arman; Shadloo, Mostafa Safdari; Nazari, Mohammad Alhuyi; Tlili, Iskander

doi:10.1016/j.molliq.2020.113476

Cited by 204 publications

(50 citation statements)

References 84 publications

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“…They informed that applying a flat plate closed-loop pulsating heat pipe to cool the PV panel is proper to increase the efficiency and economy. A review study conducted by (Ghalandari et al, 2020) about the use of the mentioned nanofluids in solar systems. They reported that the utilization of multi-walled carbon nanotube/water in PV/T solar systems have a noticeable increase in PV efficiency, system efficiency, and size reduction of the system.…”

Section: Examples Of Renovation Suggestions In Residential Buildingsmentioning

confidence: 99%

Evaluating the potential energy savings of residential buildings and utilizing solar energy in the middle region of Saudi Arabia – Case study

Almushaikah

Almasri

2020

Energy Exploration & Exploitation

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Lately, with the growth in energy consumption worldwide to support global efforts to improve the climate, developing nations have to take significant measures. Kingdom of Saudi Arabia (KSA) implemented meaningful policy actions towards promoting energy efficiency (EE) in several sectors, especially in the building sector, to be more sustainable. In this paper, various EE measures and solar energy prospects are investigated for the residential sector, in two locations in the middle region of the KSA. An energy performance analysis of pre-existing residential buildings with an overall design is performed using simulation programs. However, installing EE measures in the building envelope is important to achieve an efficient sector regarding its energy consumption. The findings showed that applying EE measures for the building envelope, walls, roof, and windows should be considered first that makes the energy conservation possible. In Riyadh, EE measures are responsible for reducing energy consumption by 27% for walls, 14% for roof, and 6% for window, and by 29%, 13%, and 6% for walls, roof, and windows, respectively, for Qassim. However, the most impactful EE solution was selecting a heating, ventilation, and air conditioning (HVAC) system with a high energy efficiency rate (EER), which can minimize the energy consumption by 33% and 32% for Riyadh and Qassim, respectively. The study's feasibility showed that the number of years needed to offset the initial investment for a proposed roof PV system exceeds the project's life, if the energy produced is exported to the grid at the official export tariff of 0.019 $/kWh. However, the simple payback time was 13.42 years if the energy produced is exported to the grid at a rate of 0.048 $/kWh, reflecting the project's economic feasibility.

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Section: Examples Of Renovation Suggestions In Residential Buildingsmentioning

confidence: 99%

Evaluating the potential energy savings of residential buildings and utilizing solar energy in the middle region of Saudi Arabia – Case study

Almushaikah

Almasri

2020

Energy Exploration & Exploitation

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“…Nanofluids are nanotechnology-based novel fluids of ultrahigh thermal efficiency. Over the past several decades, these thermal fluids have gained overwhelming attention in relevance to their potential applications in microelectronics, transportation, refrigeration, solar, nuclear and space technologies [1,2]. Even at a low concentration, nanoparticles possess high effective surface area and therefore exhibit exceptional thermal efficiency, flexible thermophysical properties, suspension stability and enlarged solid-particle interface for maximum interphase heat exchange.…”

Section: Introductionmentioning

confidence: 99%

Homogeneous and Multiphase Analysis of Nanofluids Containing Nonspherical MWCNT and GNP Nanoparticles Considering the Influence of Interfacial Layering

2021

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The practical implication of nanofluids is essentially dependent on their accurate modelling, particularly in comparison with the high cost of experimental investigations, yet the accuracy of different computational approaches to simulate nanofluids remains controversial to this day. Therefore, the present study is aimed at analysing the homogenous, multiphase Eulerian–Eulerian (volume of fluid, mixture, Eulerian) and Lagrangian–Eulerian approximation of nanofluids containing nonspherical nanoparticles. The heat transfer and pressure drop characteristics of the multiwalled carbon nanotubes (MWCNT)-based and multiwalled carbon nanotubes/graphene nanoplatelets (MWCNT/GNP)-based nanofluids are computed by incorporating the influence of several physical mechanisms, including interfacial nanolayering. The accuracy of tested computational approaches is evaluated by considering particle concentration and Reynolds number ranges of 0.075–0.25 wt% and 200–470, respectively. The results demonstrate that for all nanofluid combinations and operational conditions, the Lagrangian–Eulerian approximation provides the most accurate convective heat transfer coefficient values with a maximum deviation of 5.34% for 0.25 wt% of MWCNT–water nanofluid at the largest Reynolds number, while single-phase and Eulerian–Eulerian multiphase models accurately estimate the thermal fields of the diluted nanofluids at low Reynolds numbers, but overestimate the results for denser nanofluids at high Reynolds numbers.

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“…Moreover, energy from the sun is applied in the PV/T system and solar ponds. In the PV/T system, excessively absorbed heat from the PV module can utilize to heat the working fluid such as air and water [4]. In addition, those working fluids play a role as a coolant for solar cells, and which can improve the efficiency of PV because the overall efficiency of the solar cells hugely dependent on the operating temperature of PV panels.…”

Section: Introductionmentioning

confidence: 99%

Review of the Photothermal Energy Conversion Performance of Nanofluids, Their Applications, and Recent Advances

et al. 2020

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Nanoparticles have been thoroughly investigated in the last few decades because they have many beneficial and functional qualities. Their capability to enhance and manipulate light absorption, thermal conductivity, and heat transfer efficiency has attracted significant research attention. This systematic and comprehensive work is a critical review of research on the photothermal energy conversion performance of various nanofluids as well as the recent advances in several engineering applications. Different nanofluids used in the photothermal energy conversion process were compared to identify the suitable applications of each nanofluid in thermal systems. An analysis of the previous investigations based on experimental and numerical studies has established that nanomaterials have the potential to increase the efficiency of solar thermal systems.

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Applications of nanofluids containing carbon nanotubes in solar energy systems: A review

Cited by 204 publications

References 84 publications

Evaluating the potential energy savings of residential buildings and utilizing solar energy in the middle region of Saudi Arabia – Case study

Evaluating the potential energy savings of residential buildings and utilizing solar energy in the middle region of Saudi Arabia – Case study

Homogeneous and Multiphase Analysis of Nanofluids Containing Nonspherical MWCNT and GNP Nanoparticles Considering the Influence of Interfacial Layering

Review of the Photothermal Energy Conversion Performance of Nanofluids, Their Applications, and Recent Advances

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