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The enthalpy-porosity method with a rectangular specific heat curve

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Abstract
Phase change materials (PCM) are studied extensively as a means to increase energy density of thermal energy storage systems. The design of PCM systems is often done numerically using the enthalpy porosity method. However, commercial software packages often apply a non-realistic specific heat curve. The present article investigates the effect of applying a rectangular specific heat curve with the enthalpy-porosity method by using different peak temperatures and melting ranges while keeping the total latent heat constant. Furthermore, the simulations are compared to a purely conductive model to analyze the effect of natural convection. The simulations show that convection has an effect on total phase change times, which increases with decreasing temperature gradients.
Keywords
Phase change materials, thermal energy storage, enthalpy-porosity method.

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Please use this url to cite or link to this publication:

Chicago
Beyne, Wim, Bernd Ameel, Alvaro de Gracia, Gabriel Zsembinszki, Luisa F Cabeza, and Michel De Paepe. 2018. “The Enthalpy-porosity Method with a Rectangular Specific Heat Curve.” In Proceedings of the 16th International Heat Transfer Conference. Begellhouse.
APA
Beyne, W., Ameel, B., de Gracia, A., Zsembinszki, G., Cabeza, L. F., & De Paepe, M. (2018). The enthalpy-porosity method with a rectangular specific heat curve. Proceedings of the 16th International Heat Transfer Conference. Presented at the 16th International Heat Transfer Conference (IHTC-16) , Begellhouse.
Vancouver
1.
Beyne W, Ameel B, de Gracia A, Zsembinszki G, Cabeza LF, De Paepe M. The enthalpy-porosity method with a rectangular specific heat curve. Proceedings of the 16th International Heat Transfer Conference. Begellhouse; 2018.
MLA
Beyne, Wim et al. “The Enthalpy-porosity Method with a Rectangular Specific Heat Curve.” Proceedings of the 16th International Heat Transfer Conference. Begellhouse, 2018. Print.
@inproceedings{8611692,
  abstract     = {Phase change materials (PCM) are studied extensively as a means to increase energy density of thermal energy storage systems. The design of PCM systems is often done numerically using the enthalpy porosity method. However, commercial software packages often apply a non-realistic specific heat curve. The present article investigates the effect of applying a rectangular specific heat curve with the enthalpy-porosity method by using different peak temperatures and melting ranges while keeping the total latent heat constant. Furthermore, the simulations are compared to a purely conductive model to analyze the effect of natural convection. The simulations show that convection has an effect on total phase change times, which increases with decreasing temperature gradients.},
  author       = {Beyne, Wim and Ameel, Bernd and de Gracia, Alvaro and Zsembinszki, Gabriel and Cabeza, Luisa F and De Paepe, Michel},
  booktitle    = {Proceedings of the 16th International Heat Transfer Conference},
  language     = {eng},
  location     = {Beijing, China},
  publisher    = {Begellhouse},
  title        = {The enthalpy-porosity method with a rectangular specific heat curve},
  url          = {http://dx.doi.org/10.1615/ihtc16.ctm.023939},
  year         = {2018},
}

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