Challenging of using CuO nanoparticles in a flat plate solar collector- Energy saving in a solar-assisted hot process stream

Mustafa, Jawed; Alqaed, Saeed; Kalbasi, Rasool

doi:10.1016/j.jtice.2021.04.003

Cited by 61 publications

(14 citation statements)

References 60 publications

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“…The details of Eq. 9 are described in (Mustafa et al, 2021). The variations of T a and I(t) are illustrated in Figure 3 and Figure 4.…”

Section: Mathematical Formulationmentioning

confidence: 98%

“…Many solutions have been recommended by various researchers to reduce energy consumption (Ahmadi et al, 2017;Ahmad et al, 2018;Nwaji et al, 2019;Sarafraz et al, 2019;Azimi Fereidani et al, 2021;Nundy et al, 2021). Techniques include installing PCM (Ahangari and Maerefat, 2019;Lizana et al, 2019;Ziasistani and Fazelpour, 2019;Ben Romdhane et al, 2020;Miansari et al, 2020;Saxena et al, 2020), heat recovery (Liu et al, 2020;Shahsavar Goldanlou et al, 2020), using solar energy (Toghraie et al, 2018;Gagliano et al, 2019;Parsa et al, 2019;Gholipour et al, 2020;Menni et al, 2020;Parsa et al, 2020;Poon et al, 2020;Gholipour et al, 2021), other renewables such as wind (Jahangiri et al, 2019;Mostafaeipour et al, 2019;Kalbasi et al, 2021), geothermal sources (Kang et al, 2013;Palmero-Marrero et al, 2020) and finally using nanofluid (Kulkarni et al, 2009;Strandberg and Das, 2010;Moradi et al, 2019;Soltani et al, 2020;Mustafa et al, 2021). Considering the hot and dry climate, Li et al (2019) by conducting a numerical study examined the effect of adding RT-27 PCM to a wall with 20 cm thickness.…”

Section: Introductionmentioning

confidence: 99%

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Loading PCM Into Buildings Envelope to Decrease Heat Gain-Performing Transient Thermal Analysis on Nanofluid Filled Solar System

et al. 2021

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The high share of buildings in energy consumption and carbon dioxide emission has led researchers to seek techniques to reduce energy consumption in this sector. In this study, considering a hot and arid climate region, the wall’s heat gain was investigated. To reduce energy demand, three techniques of adding PCM, combining absorption chiller with a solar system and dispersing nanoparticles were used and the results were evaluated transiently. In July, the addition of PCM to the building's walls reduced the heat exchange between interior and exterior spaces up to 21%. To cool the interior spaces, the combination of absorption chiller + fan coil was used and several flat plate collectors were integrated with it to reduce energy demand. By collecting energy in solar collectors and using a stratified tank, energy consumption in the generator section was reduced by 450 kWh. Nanoparticles were used to improve the solar system performance and it was found that loading ZnO and Al2O3 nanoparticles is useful. Dispersing ZnO into water increased the energy-saving by 9.5% while the second nanoparticle improved it by 14.5%.

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“…The details of Eq. 9 are described in (Mustafa et al, 2021). The variations of T a and I(t) are illustrated in Figure 3 and Figure 4.…”

Section: Mathematical Formulationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Loading PCM Into Buildings Envelope to Decrease Heat Gain-Performing Transient Thermal Analysis on Nanofluid Filled Solar System

et al. 2021

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“…The parameter

for the Os NPs is shown in Table 2 , according to Muller et al [ 68 ]. The parameter

, which denotes the geometrical characteristic of the Os-shaped NPs, is as follows [ 78 ]:

…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical Analysis of the Effect of Nanoparticles Size and Shape on the Efficiency of a Micro Heatsink

et al. 2022

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In this paper, two novel micro heat sinks (MHSs) were designed and subjected to thermal analysis using a numerical method. The fluid used was Boehmite alumina–water nanofluid (NFs) with high volume fractions (VOFs). Studies were conducted to determine the influence of a variety of nanoparticle (NP) shapes, such as platelet brick, blade, cylinder, and Os. The heatsink (HS) was made of copper, and the NFs entered it through the middle and exited via four outlets at the side of the HS. The finite element method was used to simulate the NFs flow and heat transfer in the HSs. For this purpose, Multi Physics COMSOL software was used. The maximum and middle values of HS temperature (T-MAX and T-Mid), thermal resistance (TH-R), heat transfer coefficient (h), FOM, etc., were studied for different NP shapes, and with Reynolds numbers (Re) of 300, 1000, and 1700, and VOFs of 0, 3, and 6%. One of the important outcomes of this work was the better thermal efficiency of the HS with rectangular fins. Moreover, it was discovered that a rise in Re increased the heat transfer. In general, adding NPs with high VOFs to MHSs is not appropriate in terms of heat. The Os shape was the best NP shape, and the platelet shape was the worst NP shape for high NPVOF. When NPs were added to an MHS, the temperature of the MHS dropped by an average of 2.8 or 2.19 K, depending on the form of the pin-fins contained inside the MHS (circular or square). The addition of NPs in the MHS with circular and square pin-fins enhanced the pressure drop by 13.5% and 13.3%, respectively, when the Re = 1700.

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“…These materials have widely been examined by many researchers (Osman et al, 2019;Aghakhani et al, 2020;Eshgarf et al, 2021;Mahdavi et al, 2020;Nguyen et al, 2020;. Nanoparticles can improve heat transfer within the collector (Muhammad et al, 2016;Tong et al, 2019;Elcioglu et al, 2020;Gholipour et al, 2021;Mustafa et al, 2021). As shown in Figure 5, the efficiency for the MWCNTbased collector is higher.…”

Section: Second Scenariomentioning

confidence: 99%

Transient Thermal Analysis of a Solar-Assisted AHU by Focusing on Heat Recovery and Nanoparticles: Jeddah Climate Zone

Khetib

2021

Front. Energy Res.

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In the Jeddah climate region, a lot of energy is assigned to the air handling unit (AHU) sector, which should be reduced by using energy-efficient solutions. As the air passes through the cooling coil, a lot of energy is consumed to reduce the temperature along with humidity so that if the air is precooled in the previous stages, energy consumption in this energy-intensive section will be diminished. Using the coldness of the return air in the heat recovery unit (HRU), the incoming air is precooled. Based on the thermodynamic calculations, in June, July, and August, the cooling coil power demand reduces by 11.6, 13.3, and 12%, respectively. In summer, owing to using HRU, an energy-saving by 76.08 MWh is achieved (12.34% reduction in energy demand). By the incorporation of the solar collectors in the AHU, heating coil demand diminishes by 1,206, 1,399, and 1,367 kWh in June, July, and August, respectively. To improve the solar-assisted AHU effectiveness, the MWCNT nanoparticles are injected into the collectors, and it is found that the saving-energy capability improves by 17.7% using MWCNT-water at 0.1 vol.%.

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Challenging of using CuO nanoparticles in a flat plate solar collector- Energy saving in a solar-assisted hot process stream

Cited by 61 publications

References 60 publications

Loading PCM Into Buildings Envelope to Decrease Heat Gain-Performing Transient Thermal Analysis on Nanofluid Filled Solar System

Loading PCM Into Buildings Envelope to Decrease Heat Gain-Performing Transient Thermal Analysis on Nanofluid Filled Solar System

Numerical Analysis of the Effect of Nanoparticles Size and Shape on the Efficiency of a Micro Heatsink

Transient Thermal Analysis of a Solar-Assisted AHU by Focusing on Heat Recovery and Nanoparticles: Jeddah Climate Zone

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