Conjugate heat transfer in anisotropic woven metal fiber-phase change material composite

Ren, Qinlong; Wang, Zexiao; Lai, Tianwei; Zhang, J.F.; Qu, Zhiguo

doi:10.1016/j.applthermaleng.2021.116618

Cited by 36 publications

(5 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the application of PCMs is limited due to their poor thermal conductivity, severe super-cooling problems, and risk of leakage when the storage medium undergoes phase change [48][49][50]. As a consequence, various techniques have been considered to improve the thermal functionality of PCMs including: i) fins [49,[51][52][53][54][55][56], ii) filling materials (metal foams) [57][58][59][60][61], iii) micro and nano-encapsulation of the PCM [49,50,62], and iv) adding nanoparticles (NPs) to the PCM (nanoPCM) [49,[63][64][65][66][67][68]. Several types of nanomaterial have been considered such as carbons (e.g.…”

Section: Background Information and Motivation On Nano-enhanced Pcm M...mentioning

confidence: 99%

Studies in Ground Heat Transfer and Thermal Energy Storage Using Phase Change Material and Nanoparticles

Daneshazarian

2024

Preprint

View full text Add to dashboard Cite

<p>The thesis begins with a literature review of phase change material (PCM) and heat transfer intensification methods. The challenges of using these methods are discussed, and the potential of adding nanoparticles as one of the heat transfer enhancement methods is explored thoroughly and presented. Also, the potential of implementing thermally enhanced latent heat thermal energy storage (TES) in a ground source heat pump (GSHP) system is presented. A detailed study has been carried out on developing an enhanced numerical approach to investigate the melting performance of nanoPCM (exfoliated graphene nanoplatelets (xGnP)octadecane) filled in a vertical cylindrical enclosure at different weight concentrations. The results showed that by adding 0.5wt% of xGnP in the base PCM (octadecane), the melting rate decreases by 9.7% and the heat storage rate increases by 12.6%.</p>

show abstract

Section: Background Information and Motivation On Nano-enhanced Pcm M...mentioning

confidence: 99%

Studies in Ground Heat Transfer and Thermal Energy Storage Using Phase Change Material and Nanoparticles

Daneshazarian

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Yu et al [24] explored the anisotropic properties of porous media with two different pore structures and found anisotropic characteristics important. Ren et al [25] reported the anisotropic thermal conductivity effects in a woven metal foam PCM composite. They reported a better thermal performance for an anisotropic than an isotropic for thermal energy storage applications.…”

Section: Introductionmentioning

confidence: 99%

Computational Modeling of Latent Heat Thermal Energy Storage in a Shell-Tube Unit: Using Neural Networks and Anisotropic Metal Foam

et al. 2022

View full text Add to dashboard Cite

Latent heat storage in a shell-tube is a promising method to store excessive solar heat for later use. The shell-tube unit is filled with a phase change material PCM combined with a high porosity anisotropic copper metal foam (FM) of high thermal conductivity. The PCM-MF composite was modeled as an anisotropic porous medium. Then, a two-heat equation mathematical model, a local thermal non-equilibrium approach LTNE, was adopted to consider the effects of the difference between the thermal conductivities of the PCM and the copper foam. The Darcy–Brinkman–Forchheimer formulation was employed to model the natural convection circulations in the molten PCM region. The thermal conductivity and the permeability of the porous medium were a function of an anisotropic angle. The finite element method was employed to integrate the governing equations. A neural network model was successfully applied to learn the transient physical behavior of the storage unit. The neural network was trained using 4998 sample data. Then, the trained neural network was utilized to map the relationship between control parameters and melting behavior to optimize the storage design. The impact of the anisotropic angle and the inlet pressure of heat transfer fluid (HTF) was addressed on the thermal energy storage of the storage unit. Moreover, an artificial neural network was successfully utilized to learn the transient behavior of the thermal storage unit for various combinations of control parameters and map the storage behavior. The results showed that the anisotropy angle significantly affects the energy storage time. The melting volume fraction MVF was maximum for a zero anisotropic angle where the local thermal conductivity was maximum perpendicular to the heated tube. An optimum storage rate could be obtained for an anisotropic angle smaller than 45°. Compared to a uniform MF, utilizing an optimum anisotropic angle could reduce the melting time by about 7% without impacting the unit’s thermal energy storage capacity or adding weight.

show abstract

“…However, the application of PCMs is limited due to their poor thermal conductivity, severe super-cooling problems, and risk of leakage when the storage medium undergoes the phase change [7]- [9]. As a consequence, various techniques have been considered to improve the thermal functionality of PCMs including: i) fins [8], [10]- [15], ii) filling materials (metal foams) [16]- [20], iii) micro and nano-encapsulation of the PCM [8], [9], [21], and iv) adding nanoparticles (NPs) to the PCM (nano-PCM) [8], [22]- [27]. Several types of nanomaterial have been considered such as carbons (e.g.…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Nano-enhanced Phase Change Material for Thermal Storage

Daneshazarian

Antoun

Dworkin

2021

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

Conjugate heat transfer in anisotropic woven metal fiber-phase change material composite

Cited by 36 publications

References 46 publications

Studies in Ground Heat Transfer and Thermal Energy Storage Using Phase Change Material and Nanoparticles

Studies in Ground Heat Transfer and Thermal Energy Storage Using Phase Change Material and Nanoparticles

Computational Modeling of Latent Heat Thermal Energy Storage in a Shell-Tube Unit: Using Neural Networks and Anisotropic Metal Foam

Performance Assessment of Nano-enhanced Phase Change Material for Thermal Storage

Contact Info

Product

Resources

About