D3 Properties of Pure Fluid Substances

Kleiber, Michał; Joh, Ralph

doi:10.1007/978-3-540-77877-6_18

Cited by 23 publications

(42 citation statements)

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“…In the present problem problem, the variation of thermo-physical properties with temperature has been considered by by evaluating them at the film temperature defined by ( ) / 2 sf TT  . The correlation equations for the thermo-physical properties of water and other coolants in gas and liquid states are presented as a function of temperature in VDI-Heat Atlas Atlas [21].…”

Section: Resultsmentioning

confidence: 99%

A New Correlation for the Onset of Nucleate Boiling Heat Flux under an Impinging Planar Water Jet

Mohaghegh¹,

Siddique²,

Mahmud³

et al. 2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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Section: Resultsmentioning

confidence: 99%

A New Correlation for the Onset of Nucleate Boiling Heat Flux under an Impinging Planar Water Jet

Mohaghegh¹,

Siddique²,

Mahmud³

et al. 2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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“…with the thermal resistance R wick of the wicks. By inserting (9), the ideal gas law (10), the Clausius-Clapeyron equation (11), and the mass balance ( 13) into ( 14), the energy balance of the CC can be rewritten as:…”

Section: Compensation Chambermentioning

confidence: 99%

Dynamic state-space modeling and model-based control design for loop heat pipes

Gellrich¹,

Clara²,

Okraschevski³

et al. 2020

Preprint

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For the thermal control of electronic components in aerospace, automotive or server systems, the heat sink is often located far from the heat sources. Therefore, heat transport systems are necessary to cool the electronic components effectively. Loop heat pipes (LHPs) are such heat transport systems, which use evaporation and condensation to reach a higher heat transfer coefficient than with sole heat conduction. The operating temperature of the LHP governs the temperature of the electronic components, but depends on the amount of dissipated heat and the temperature of the heat sink. For this reason, a control heater on the LHP provides the ability to control the operating temperature at a fixed setpoint temperature. For the model-based control design of the control heater controller, the current LHP state-space model in the literature focuses on the setpoint response without modeling the fluid's dynamics. However, the fluid's dynamics determine the disturbance behavior of the LHP. Therefore, the fluid's dynamics are incorporated into a new LHP state-space model, which is not only able to simulate the LHP behavior under disturbance changes, but is also used for the model-based design of a robust nonlinear controller, which achieves an improved control performance compared to the nonlinear controller based on the previous LHP state-space model.

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“…In all the previous variation of thermophysical properties with temperature has been taken into account by evaluating them at the film temperature defined by (T s + T f )/2. The correlation equations for the thermophysical properties of water and other coolants in gas and liquid states are presented as a function of temperature in VDI-Heat Atlas [22].…”

Section: Similarity Solutionmentioning

confidence: 99%

Modeling of nucleate boiling heat transfer of a stagnation-point flow impinging on a hot surface

Mohaghegh¹,

Rahimi²

2018

THERM SCI

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A model using modified superposition approach is developed to predict the rate of heat transfer in the stagnation region of a planar jet impingement boiling on a hot flat surface. The total heat flux in this model is based on the combination of the single phase forced convection and nucleate pool boiling components. The single-phase component is calculated by using similarity solution approach. The applicability of the model is investigated on the boiling curves under conditions of single-phase, partial, and fully developed nucleate boiling. The effect of main parameters of water jet, i. e. jet sub-cooling, jet velocity, and nozzle to plate distance on the heat flux, is of concerned. A comparison of the obtained results of the model is made with various published experimental data and good agreement is reported.

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D3 Properties of Pure Fluid Substances

Cited by 23 publications

References 0 publications

A New Correlation for the Onset of Nucleate Boiling Heat Flux under an Impinging Planar Water Jet

A New Correlation for the Onset of Nucleate Boiling Heat Flux under an Impinging Planar Water Jet

Dynamic state-space modeling and model-based control design for loop heat pipes

Modeling of nucleate boiling heat transfer of a stagnation-point flow impinging on a hot surface

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