Numerical and experimental investigation of melting and freezing processes in phase change material storage

Lamberg, Piia; Lehtiniemi, R.; Henell, Anna-Maria

doi:10.1016/j.ijthermalsci.2003.07.001

Cited by 308 publications

(135 citation statements)

References 10 publications

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“…In other words, the combined EnthalpyPorosity method can accommodate the zero velocity condition which is required as a liquid region turns to solid. Mathematical treatment of this Enthalpy-Porosity method is very simple, and has a wide range of application such as energy storage systems and to casting processes (Yvan et al, 2011;Lamberg et al, 2004;Dawei et al, 2005). For this reason, it was chosen in the current study, and this allows the estimation of the latent heat of melting and the position of the melting front.…”

Section: Wwwintechopencommentioning

confidence: 99%

A Numerical Study on Time-Dependent Melting and Deformation Processes of Phase Change Material (PCM) Induced by Localized Thermal Input

Kim¹,

Hossain²,

Kim³

et al. 2011

Two Phase Flow, Phase Change and Numerical Modeling

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Section: Wwwintechopencommentioning

confidence: 99%

A Numerical Study on Time-Dependent Melting and Deformation Processes of Phase Change Material (PCM) Induced by Localized Thermal Input

Kim¹,

Hossain²,

Kim³

et al. 2011

Two Phase Flow, Phase Change and Numerical Modeling

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“…This simplification of material (RT 22, Rubitherm, Berlin, Germany) behavior is sufficiently accurate according to the model proposed [24] (Figure 4). …”

Section: Phase Change Materials (Pcm)-bearing Façadementioning

confidence: 84%

Energy Efficiency Indicators for Assessing Construction Systems Storing Renewable Energy: Application to Phase Change Material-Bearing Façades

et al. 2015

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Assessing the performance or energy efficiency of a single construction element by itself is often a futile exercise. That is not the case, however, when an element is designed, among others, to improve building energy performance by harnessing renewable energy in a process that requires a source of external energy. Harnessing renewable energy is acquiring growing interest in Mediterranean climates as a strategy for reducing the energy consumed by buildings. When such reduction is oriented to lowering demand, the strategy consists in reducing the building's energy needs with the use of construction elements able to passively absorb, dissipate, or accumulate energy. When reduction is pursued through M&E services, renewable energy enhances building performance. The efficiency of construction systems that use renewable energy but require a supplementary power supply to operate can be assessed by likening these systems to regenerative heat OPEN ACCESSEnergies 2015, 8 8631 exchangers built into the building. The indicators needed for this purpose are particularly useful for designers, for they can be used to compare the efficiency or performance to deliver an optimal design for each building. This article proposes a series of indicators developed to that end and describes their application to façades bearing phase change materials (PCMs).

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“…where α and λ are the thermal diffusivity and the thermal conductivity respectively; the superscripts s and l refer to the solid and liquid phase; l is the specific solidification latent heat; and is the time function that identifies the position of the phase change boundary [37].…”

Section: -D Thermal Model Based On Explicit Finite Difference Methodsmentioning

confidence: 99%

On the Efficacy of PCM to Shave Peak Temperature of Crystalline Photovoltaic Panels: An FDM Model and Field Validation

Brano¹,

Ciulla²,

Piacentino³

et al. 2013

Energies

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Abstract:The exploitation of renewable energy sources and specifically photovoltaic (PV) devices have been showing significant growth; however, for a more effective development of this technology it is essential to have higher energy conversion performances. PV producers often declare a higher efficiency respect to real conditions and this deviation is mainly due to the difference between nominal and real temperature conditions of the PV. In order to improve the solar cell energy conversion efficiency many authors have proposed a methodology to keep the temperature of a PV system lower: a modified crystalline PV system built with a normal PV panel coupled with a Phase Change Material (PCM) heat storage device. In this paper a thermal model analysis of the crystalline PV-PCM system based on a theoretical study using finite difference approach is described. The authors developed an algorithm based on an explicit finite difference formulation of energy balance of the crystalline PV-PCM system. Two sets of recursive equations were developed for two types of spatial domains: a boundary domain and an internal domain. The reliability of the developed model is tested by a comparison with data coming from a test facility. The results of numerical simulations are in good agreement with experimental data.Keywords: phase change material; crystalline photovoltaic modules; heat storage; finite difference method; experimental validation

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Numerical and experimental investigation of melting and freezing processes in phase change material storage

Cited by 308 publications

References 10 publications

A Numerical Study on Time-Dependent Melting and Deformation Processes of Phase Change Material (PCM) Induced by Localized Thermal Input

A Numerical Study on Time-Dependent Melting and Deformation Processes of Phase Change Material (PCM) Induced by Localized Thermal Input

Energy Efficiency Indicators for Assessing Construction Systems Storing Renewable Energy: Application to Phase Change Material-Bearing Façades

On the Efficacy of PCM to Shave Peak Temperature of Crystalline Photovoltaic Panels: An FDM Model and Field Validation

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