Thermo-mathematical model for parabolic trough collector using a complete radiation heat transfer model – A new approach

Jinshah, B S; Balasubramanian, K.R.

doi:10.1016/j.solener.2019.12.068

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…There are N ( i = 1, 2, 3, …, N ) surfaces, the absorption coefficient G ij of surface j on each surface i , which can be expressed by equation (3), and as shown: 40–42…”

Section: Theoretical Model Establishment Proceduresmentioning

confidence: 99%

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Building thermal environment solution model and radiation heat transfer calculation model based on Gebhart absorption coefficient

Xiang

Huang

2023

Advances in Mechanical Engineering

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The building walls temperatures are different, and there are radiation heat transfers between the walls, which have the characteristics of multiple reflections and multiple absorptions. The Gebhart absorption coefficient considers the radiation energy both directly absorbed by the wall and indirectly absorbed by other walls multiple times reflections. The absorption coefficient Gij is used to represent the proportion of radiation energy absorbed by surface j from the radiation energy of surface i. Through employing Gebhart absorption coefficient, the Gebhart absorption coefficient matrix is constructed based on the wall angle factors and the wall radiation emissivity. The building thermal environment solution model is established, which can calculate the indoor air temperature and wall temperature. The wall radiation heat transfer calculation model is built to calculate the net radiation heat transfer of the walls. An experimental bench was carried out to verify the above theoretical calculation results. The research results showed that the theoretical calculated values of the air temperatures of the building thermal environment solution model were basically consistent with the measured values, and the deviation was within 0.25°C. The deviation between the calculated values of the wall temperatures and the measured values was basically within 1.0°C. The error between the calculated values of the wall radiation heat transfer calculation model and the measured values varied within a small range. The Gebhart absorption coefficient is more appropriate in characterizing radiation heat transfer mechanism of the walls, and it provides a new way and thought for the analysis of radiation heat transfer on building wall.

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“…There are N ( i = 1, 2, 3, …, N ) surfaces, the absorption coefficient G ij of surface j on each surface i , which can be expressed by equation (3), and as shown: 40–42…”

Section: Theoretical Model Establishment Proceduresmentioning

confidence: 99%

“…The absorption coefficient G ij is used to represent the proportion of radiation energy absorbed by surface j from surface i , which includes direct radiation energy and indirect radiation energy by reflection radiation. 40–42…”

Section: Introductionmentioning

confidence: 99%

Building thermal environment solution model and radiation heat transfer calculation model based on Gebhart absorption coefficient

Xiang

Huang

2023

Advances in Mechanical Engineering

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“…The greenhouse gases have irreversible effects on the environment and cause its destruction [11]. The gases such as carbon dioxide, carbon monoxide, methane, aromatic compounds, and hydrocarbons with different chains and radical compounds can be considered greenhouse gases [12]. The currents of fluid on the planet can act as factors to reduce gas lines [13].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Use of Mass Transfer and Thermodynamics Equations to Estimate the Amount of Removed Greenhouse Gas from the Environment by a Stream of Water

Farahbod

2020

Environ Model Assess

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The main objective of this research is to formulate a novel mathematical model. For modeling the emission of pollutants, the physical principles are captured and simple hypotheses are postulated by the mathematical expressions derived from the stability equations of the mass. The results show the rate of greenhouse gas emissions increases by about 26% when the water flow rate reaches from 1.1 to 1.92 m/s. Also, the obtained data from the model show a very good agreement with the experimental data. Also, the results of this study show the amount of greenhouse gas emissions increases by approximately 2.46% with increasing ambient temperature from 21.4 to 9.43°C. Finally, the results of this study show it is possible to estimate the degree of gas solubility in water flow with equations of mass transfer and thermodynamics.

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Analytical Approach for Hybrid Line and Point Solar Concentrator

Phadtare,

Nagarhalli

2024

Lecture Notes in Civil Engineering

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Thermo-mathematical model for parabolic trough collector using a complete radiation heat transfer model – A new approach

Cited by 10 publications

References 33 publications

Building thermal environment solution model and radiation heat transfer calculation model based on Gebhart absorption coefficient

Building thermal environment solution model and radiation heat transfer calculation model based on Gebhart absorption coefficient

Simultaneous Use of Mass Transfer and Thermodynamics Equations to Estimate the Amount of Removed Greenhouse Gas from the Environment by a Stream of Water

Analytical Approach for Hybrid Line and Point Solar Concentrator

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