Exact solution of thermal energy storage system using PCM flat slabs configuration

Bechiri, Mohammed; Mansouri, Kacem

doi:10.1016/j.enconman.2013.07.051

Cited by 32 publications

(11 citation statements)

References 22 publications

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“…The current model is compared against experimental data from the literature. Similar indirect verification is present in the literature (Elsayed, 2007;Bechiri and Mansouri, 2013). To perform this verification, the model had to be adapted to fit the parameters of those detailed in the tests performed in the relevant publication.…”

Section: Pcm Tsu Verificationmentioning

confidence: 72%

Co-simulation of a HVAC system-integrated phase change material thermal storage unit

Jones

Finn

2016

Journal of Building Performance Simulation

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A co-simulation environment, consisting of a detailed mathematical model of a thermal energy storage unit which is incorporated with an En-ergyPlus simulation model of a full building HVAC system, is described. The two models are integrated using the user-defined plant component feature in EnergyPlus and the Building Controls Virtual Test Bed (BCVTB) environment. The thermal energy storage unit, which consists of encapsulated phase change material in a series of flat plates and a heat transfer working fluid (water), is modelled using a transient one-dimensional forward finite difference method. The thermal storage model is executed within MATLAB and is verified against experimental data, showing a discharging heat transfer accuracy to within 2.5%. The building model, which incorporates a retrofitted ground source heat pump system within a thermally massive building, is simulated in the EnergyPlus environment. The co-simulation arrangement allows for in-depth analysis of the integrated system under dynamic operating conditions, which is currently not possible within the EnergyPlus environment. Moreover, the overall adopted approach, based on generic integration of a detailed mathematical model, using a third party generalised programming environment, into an established building simulation environment, serves as a successful exemplar for other researchers and practitioners working in the field.

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Section: Pcm Tsu Verificationmentioning

confidence: 72%

Co-simulation of a HVAC system-integrated phase change material thermal storage unit

Jones

Finn

2016

Journal of Building Performance Simulation

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“…Numerous studies, encompassing numerical, analytical, and experimental approaches, have been undertaken to analyze the thermal performance of LTES systems composed of horizontal slabs containing a single-PCM. [39][40][41][42][43][44][45] Additionally, Elbahjaoui and El Qarnia [46][47][48] recently investigated LTES systems using vertically arranged slabs filled with a single-PCM during charging and discharging processes.…”

Section: Introductionmentioning

confidence: 99%

Thermal analysis of a cascaded latent thermal storage tank in a solar domestic water heating system

Elbahjaoui,

Hanchi

2023

Energy Storage

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To enhance the thermal characteristics of a solar collector storage system, this study investigates the performance of a rectangular thermal energy storage (TES) tank by incorporating cascade phase change materials (cascade‐PCMs). Three different commercially available PCMs (RT44HC, RT54HC, and RT62HC) with distinct melting temperatures are employed. These cascade‐PCMs are utilized as slabs in vertical rectangular modules, which are integrated into the water TES tank. The heat transfer fluid (HTF) in the flat‐plate solar collector captures solar energy and transfers it to the TES tank, where it is stored as latent thermal energy. A two‐dimensional (2D) numerical model, utilizing the enthalpy‐porosity approach and conservation equations, is developed to analyze the melting and heat transfer processes within the TES tank. The model is validated against previous experimental and numerical data. Performance evaluation of the cascade‐PCMs tank is conducted during a 9‐h charging period (from 8:00 am to 5:00 pm) under Marrakesh weather conditions in Morocco. An optimization study is carried out to determine the optimal height of each cascade‐PCM. The results suggest that an optimal design with heights of 23, 16, and 11 cm for RT44HC, RT54HC, and RT62HC respectively, offers improved melting and storage quality. The thermal characteristics of the TES tank incorporating cascade‐PCMs are compared to those of a TES tank filled with a single phase change material (single‐PCM) during the charging period. The findings indicate that the cascade‐PCMs achieve complete melting, while the single‐PCM only reaches a melting fraction of 0.903 at the end of the charging process. Furthermore, the optimal configuration of the cascade‐PCMs storage tank exhibits slightly higher sensible and latent thermal energy storage capacity compared to the single‐PCM tank. The combination of the solar collector with the cascade‐PCMs storage tank results in a 3.47% higher average collection efficiency when compared to the single‐PCM tank.

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“…Bechiri and Mansouri [16] developed an analytical solution for a planar LTES heat exchanger. The model includes both sensible and latent heat of the PCM, however natural convection in the PCM is neglected.…”

Section: Introductionmentioning

confidence: 99%

A predictive method for pipe in pipe, cylindrical modules and spherical packed bed latent thermal energy storage systems

Beyne,

Tassenoy,

Goderis

et al. 2023

Journal of Energy Storage

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Exact solution of thermal energy storage system using PCM flat slabs configuration

Cited by 32 publications

References 22 publications

Co-simulation of a HVAC system-integrated phase change material thermal storage unit

Co-simulation of a HVAC system-integrated phase change material thermal storage unit

Thermal analysis of a cascaded latent thermal storage tank in a solar domestic water heating system

A predictive method for pipe in pipe, cylindrical modules and spherical packed bed latent thermal energy storage systems

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