Experimental study on effect of pressure on heat sink of n-decane

Zhou, Weixing; Jia, Zhenjian; Qin, Jiang; Bao, Wen; Yu, Bin

doi:10.1016/j.cej.2013.12.081

Cited by 107 publications

(36 citation statements)

References 34 publications

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“…Thus the histograms of the experiment results at 3 MPa and 4 MPa are not shown here and the detailed information can be found in Ref. [17].…”

Section: Experimental Determination Of Fuel Vapor Compositionmentioning

confidence: 97%

“…(17) indicates that the pump is a power consumer while the turbine and the generator are power producers. h turb , h pump and h gen are assumed to be 0.6, 0.6 and 0.8 in the following calculations according to engineering experience [11].…”

Section: Performance Evaluation Of Power Generation System With Fuelmentioning

confidence: 99%

“…Thus, the value of the pressure at the inlet of the turbine can be assumed to be the pressure increase Dp by the pump in Eq. (17) approximately in cycle analysis. The temperature at the inlet of the pump is assumed to be 300 K and the density r is 730 kg m À3 .…”

Section: Performance Evaluation Of Power Generation System With Fuelmentioning

confidence: 99%

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Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Zhang

Qin

Feng

et al. 2014

Energy

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“…Thus the histograms of the experiment results at 3 MPa and 4 MPa are not shown here and the detailed information can be found in Ref. [17].…”

Section: Experimental Determination Of Fuel Vapor Compositionmentioning

confidence: 97%

Section: Performance Evaluation Of Power Generation System With Fuelmentioning

confidence: 99%

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Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Zhang

Qin

Feng

et al. 2014

Energy

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“…Compared with the heat dissipation for automotive engines, the energy level of the heat dissipation on the engine walls for a hypersonic flight vehicle is quite high because the operation temperature of the coolant for a regenerative cooling system is much higher than that of the cooling water for automotive engines. The maximum temperature for the endothermic hydrocarbon fuel can reach about 1000 K without coking and carbonization [35], so it is possible to create a thermoelectric device using the cold fuel and the hot fuel heated by heat dissipation.…”

Section: Exhaust Heatmentioning

confidence: 99%

Performance Evaluation of Waste Heat Recovery Systems Based on Semiconductor Thermoelectric Generators for Hypersonic Vehicles

Cheng

Feng

et al. 2017

Energies

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Abstract:The types and the characteristics of the waste heat on hypersonic vehicles and the application feasibility of thermoelectric generators (TEGs) for hypersonic aircraft are discussed in this paper. Two thermoelectric generator schemes with an isothermal heat source and a variable temperature heat source were proposed, and the corresponding models were developed to predict the performance of the waste heat recovery systems on a hypersonic vehicle with different heat sources. The thermoelectric efficiency variation with electric current, the temperature distribution of fuel and junctions, and the distribution of the thermoelectric figure of merit (ZT value) are described by diagrams. Besides, some improvements for a better performance are analyzed. The results indicate that the maximum values of thermoelectric efficiency are 5% and 2.5% for the isothermal heat source and the variable temperature heat source, respectively, and the thermoelectric efficiency improves with the temperature of the hot junction. The performance of the TEGs with variable temperature heat source is worse than that of the other TEGs under the same highest hot junction temperature conditions, and the former has a better conversion efficiency than the latter when the average temperatures are identical.

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“…For example, by default, λe is the effective thermal conductivity of fluid plus solid evaluated with a parallel law. Pyrolysis is not considered for this work and the fuel temperature is set lower than its pyrolysis point [46].…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical heat transfer analysis of transcritical hydrocarbon fuel flow in a tube partially filled with porous media

et al. 2016

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Hydrocarbon fuel has been widely used in airbreathing scramjets and liquid rocket engines as coolant and propellant. However, possible heat transfer deterioration and threats from local high heat flux area in scramjet make heat transfer enhancement essential. In this work, 2-D steady numerical simulation was carried out to study different schemes of heat transfer enhancement based on a partially filled porous media in a tube. Both boundary and central layouts were analyzed and effects of gradient porous media were also compared. The results show that heat transfer in the transcritical area is enhanced at least 3 times with the current configuration compared to the clear tube. Besides, the proper use of gradient porous media also enhances the heat transfer compared to homogenous porous media, which could help to avoid possible overtemperature in the thermal protection.

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Experimental study on effect of pressure on heat sink of n-decane

Cited by 107 publications

References 34 publications

Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Performance evaluation of power generation system with fuel vapor turbine onboard hydrocarbon fueled scramjets

Performance Evaluation of Waste Heat Recovery Systems Based on Semiconductor Thermoelectric Generators for Hypersonic Vehicles

Numerical heat transfer analysis of transcritical hydrocarbon fuel flow in a tube partially filled with porous media

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