Velocity prediction of Cu/water nanofluid convective flow in a circular tube: Learning CFD data by differential evolution algorithm based fuzzy inference system (DEFIS)

Nabavi, Miralireza; Elveny, Marischa; Danshina, Svetlana; Behroyan, Iman; Babanezhad, Meisam

doi:10.1016/j.icheatmasstransfer.2021.105373

Cited by 21 publications

(9 citation statements)

References 34 publications

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“…In order to utilize RESs in an economic and efficient manner, the optimal sizing of MG components is essential. According to the type of the optimization method, the full utilization of RESs and minimum investment along with the efficient MG performance can be assured [56]. For this purpose, various optimization methods have been employed in recent studies [57].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In an on-grid connection, an MG sends or receives power from the upstream grid and neighbor MGs in the area. Nevertheless, factors such as decreasing the power quality of the upstream grid based on the specific standards, significant disruption to the upstream grid, or maintenance program led to isolating the MG from the upstream grid [53][54][55][56].…”

Section: Introduction 1motivationsmentioning

confidence: 99%

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Techno-Economic Planning and Operation of the Microgrid Considering Real-Time Pricing Demand Response Program

et al. 2021

Energies

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The optimal planning of grid-connected microgrids (MGs) has been extensively studied in recent years. While most of the previous studies have used fixed or time-of-use (TOU) prices for the optimal sizing of MGs, this work introduces real-time pricing (RTP) for implementing a demand response (DR) program according to the national grid prices of Iran. In addition to the long-term planning of MG, the day-ahead operation of MG is also analyzed to get a better understanding of the DR program for daily electricity dispatch. For this purpose, four different days corresponding to the four seasons are selected for further analysis. In addition, various impacts of the proposed DR program on the MG planning results, including sizing and best configuration, net present cost (NPC) and cost of energy (COE), and emission generation by the utility grid, are investigated. The optimization results show that the implementation of the DR program has a positive impact on the technical, economic, and environmental aspects of MG. The NPC and COE are reduced by about USD 3700 and USD 0.0025/kWh, respectively. The component size is also reduced, resulting in a reduction in the initial cost. Carbon emissions are also reduced by 185 kg/year.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Introduction 1motivationsmentioning

confidence: 99%

Techno-Economic Planning and Operation of the Microgrid Considering Real-Time Pricing Demand Response Program

et al. 2021

Energies

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“…57 However, these combustion systems are sensitive toward the complex phenomenon of the flame back into the pre-mixing tube. 10,[58][59][60] The two primary mechanisms that cause the flame back into the pre-mixing tube are flame emission in the boundary layer near the wall of the pre-mixing tube resulting from the low rate of inlet stream and returning of flame due to fluctuations of inlet streams which is the result of combustion instability. 61 Most of the collected data on the flame returning to the premixing tube of burners has occurred.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Sun

Duan

Hao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nitrogen oxides are considered as one of the greenhouse gases. Among the most significant emission sources for this gas is a natural gas-fired power plant. The United Nations General assembly suggested in 1988 that human activities can negatively impact weather patterns, and thus they should be controlled. This control policy can improve the efficiency of final consumers such as power plants, cars, or other energy-intensive industries. In this paper, the existing strategies and explicitly making the dry low nitrogen oxides burner reduce greenhouse gases in power plants are explored. The geometry of the burner has been produced in a three-dimensional form in GAMBIT software, and the results of the simulation have been expressed through FLUENT software. Contours of pressure, temperature, and velocity of the fluid in the furnace are also derived. It is concluded that the dry low nitrogen oxides burners plan has a better result compared with other strategies.

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“…The Gambit program was used to model a cooling beam. This cooling beam was inserted into a control volume that simulated a room (Figure 19) and result is shown in [24][25][26][27][28]. For the input parameters, real structural dimensions of the devices were taken.…”

Section: Computational Fluid Dynamics (Cfd) Simulation Of Passive Coo...mentioning

confidence: 99%

Numerical Simulation of Passive Cooling Beam and Its Optimization to Increase the Cooling Power

Kadúchová

Lenhard

2021

Processes

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This article is focused on the research of passive cooling beams and increasing their cooling capacity. A passive cooling beam with four tubes was chosen as a model. A mathematical model was built using the corresponding criterion equations to capture the behavior of a passive cooling beam. This mathematical model can be used to optimize geometrical parameters (the distance between the ribs, rib height and thickness, and diameter and number of tubes), by changing these geometric parameters we can increase the cooling performance. The work includes a mathematical model for calculating the boundary layer, which has a significant influence on the cooling performance. The results obtained from the created mathematical model show that the model works correctly and can be used to optimize the cooling performance of passive cooling beams. To better understand the behavior of a passive cooling beam in a confined space, the entire device was numerically simulated, as was the flow in the intercostal space.

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Velocity prediction of Cu/water nanofluid convective flow in a circular tube: Learning CFD data by differential evolution algorithm based fuzzy inference system (DEFIS)

Cited by 21 publications

References 34 publications

Techno-Economic Planning and Operation of the Microgrid Considering Real-Time Pricing Demand Response Program

Techno-Economic Planning and Operation of the Microgrid Considering Real-Time Pricing Demand Response Program

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Numerical Simulation of Passive Cooling Beam and Its Optimization to Increase the Cooling Power

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