Conjugated heat transfer analysis of a foam filled double-pipe heat exchanger for high-temperature application

Chen, Xue; Sun, Chuang; Xia, Xin‐Lin; Liu, Rongqiang; Wang, Fuqiang

doi:10.1016/j.ijheatmasstransfer.2019.01.100

Cited by 39 publications

(14 citation statements)

References 54 publications

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“…The heat exchange between the HTF and PCM sides are coupled through the solid wall. The continuity of temperature and heat flux at the interfacial wall surface should be guaranteed, the following boundary relations are adopted [26,27].…”

Section: MMmentioning

confidence: 99%

Thermal Performance of a PCM-Based Thermal Energy Storage with Metal Foam Enhancement

Chen

Xia

et al. 2019

Energies

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The energy transport inside a phase change material (PCM) based thermal energy storage system using metal foam as an enhancement technique is investigated numerically. The paraffin is used as the PCM and water as the heat transfer fluid (HTF). The transient heat transfer during the charging and discharging processes is solved, based on the volume averaged conservation equations. The flow in PCM/foam and HTF/foam composites is modelled by the Forchheimer-extended Darcy equation, while the two-temperature model is employed to account for the local thermal non-equilibrium effect between the foam matrix and fluid phase. The results show that the overall performance is greatly improved by inserting metal foam in both HTF and PCM sides. A nearly 84.9% decrease in the time needed for the total process is found compared with the case of pure PCM, and 40% compared with the case of metal foam insert only in the PCM side. Foam porosity and HTF inlet temperature greatly affect the dynamic heat storage/release process.

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Section: MMmentioning

confidence: 99%

Thermal Performance of a PCM-Based Thermal Energy Storage with Metal Foam Enhancement

Chen

Xia

et al. 2019

Energies

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“…where σ is the Stefan-Boltzmann constant, n is the refractive index, k r can be considered as the 'irradiative conductivity' [22] and β e is the extinction coefficient of the oil shale packing bed [23] expressed as:…”

Section: Equations Governing the Oil Shale Flowing Regionmentioning

confidence: 99%

Numerical study of the flow, heat transfer and pyrolysis process in the gas full circulation oil shale retort

Dai¹,

Huang²,

Lu³

et al. 2021

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“…where m k k w eff w = 64 / ( ) , w represents the channel width, k w is the solid thermal conductivity, and T w denotes the solid wall temperature. The more detailed description for the principle of micro-groove heat pipes can be found in previous research studies [21] and [22].…”

Section: The Working Principle Of Micro-groove Heat Pipementioning

confidence: 99%

“…18Then the parameter Fv can be calculated by Eqs. (19) to (22) according to different situations. a. If…”

Section: Re R Qmentioning

confidence: 99%

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

Zhe

Li³

et al. 2020

SV-JME

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The present paper focuses on the manufacturing of micro-groove heat pipes on hydrostatic thrust bearings of heavy machinery. Special multitooth tools were designed for plough-extrusion forming heat pipes on flat copper. Experimental results were conducted to determine whether the plough-extrusion forming could achieve better performance than traditional wire electrical discharge. Furthermore, the processing using multi-tooth tool with 10 mm length, 55 tooth number, 0.25 mm tooth depth and 0.22 tooth top width was found to achieve the best performance among the six optional tools. The 50 mm/min forming speed was determined to acquire the best surface quality of the microgroove structure. Through heat transfer testing, the theoretical model for a micro-groove heat pipe made by plough-extrusion forming was also verified.

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Conjugated heat transfer analysis of a foam filled double-pipe heat exchanger for high-temperature application

Cited by 39 publications

References 54 publications

Thermal Performance of a PCM-Based Thermal Energy Storage with Metal Foam Enhancement

Thermal Performance of a PCM-Based Thermal Energy Storage with Metal Foam Enhancement

Numerical study of the flow, heat transfer and pyrolysis process in the gas full circulation oil shale retort

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

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