Standardised methods for the determination of key performance indicators for thermal energy storage heat exchangers

Beyne, W.; T’Jollyn, Ilya; Lecompte, Steven; Cabeza, Luisa F.; Paepe, Michel De

doi:10.1016/j.rser.2022.113139

Cited by 9 publications

(3 citation statements)

References 162 publications

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“…The design requirements for a TES system are summarized as a set of Key Performance Indicators (KPIs) which can be divided into technical, economical and life-cycle indicators [1]. According to Beyne et al [2], all technical indicators can be determined from the geometry of the system, the material properties and the interaction of the TES system with its environment. This interaction takes on two main forms: heat transfer with the environment and the outlet state of the Heat Transfer Fluid (HTF) for a given inlet state of the HTF and initial state of the system.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of a design model for latent thermal energy storage extended with sensible heat

Beyne,

Degroote,

De Paepe

2024

J. Phys.: Conf. Ser.

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Latent thermal energy storage can be a key technology for a green energy transition by matching fluctuating heat demand and supply. In order to implement a storage system, it needs to be designed which requires estimating the outlet temperature of a system for a given geometry and time history of the heat transfer fluid’s mass flow rate and inlet temperature. Currently, design methods are either overly simplistic, focusing solely on e.g. the phase change time or requiring the solution of partial differential equations which can be computationally expensive. The present paper proposes a novel approach where a latent thermal energy storage system is decomposed into a heat transfer fluid vessel, a sensible storage system and a storage system with only latent heat. Computationally inexpensive models are available for all three of these sub heat exchangers. A heat exchanger model is obtained by connecting the sub heat exchangers in parallel. This novel approach is used to model an industrial scale shell and tube latent thermal energy storage heat exchanger. The predicted outlet temperature is compared to the measured outlet temperature and the design model obtains good agreement.

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Section: Introductionmentioning

confidence: 99%

Experimental validation of a design model for latent thermal energy storage extended with sensible heat

Beyne,

Degroote,

De Paepe

2024

J. Phys.: Conf. Ser.

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“…The effectiveness-NTU and LMTD methods are thus central to the study of heat exchangers. However as was recently pointed out in a review paper [9], they are not applicable to LTES heat exchangers since these methods require the heat exchanger to operate in steady state. However, storage systems cannot operate without a change in internal energy and therefore cannot operate in steady state.…”

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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“…Among latent systems, phase change materials are widely known since they are essentially able to melt and solidify around a designed temperature that depends on the final application [6]. Within cooling systems, PCMs can be coupled with heat exchangers to be effectively used as the secondary fluid [7]. Medrano et al [8] used phase change materials within different heat exchangers, such as double-pipe, finned, and plate heat exchangers.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Phase Change Material-Based Condenser of a Low-Scale Refrigeration System

Cavargna¹,

Mongibello

Iasiello³

et al. 2023

Energies

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This study concerns the numerical simulation and the experimental implementation of a low-scale Phase Change Material-based (PCM-based) condenser, to be included in a PCM-based portable cooling systems. In this category of cooling systems, the PCM can be integrated either in the condenser or in the evaporator. In the present study, the PCM is integrated in the condenser of the vapor compression cycle to absorb the heat power released from the refrigerant fluid (R134a) during condensation, thus eliminating the need to transfer heat to the external environment. The main objective of the present study is to realize and validate a numerical model capable of simulating both the refrigerant fluid and the PCM thermofluid dynamics. For this purpose, a commercial solver was used for the implementation of the developed numerical model, and experimental tests were performed to validate the numerical simulations results. The paper reports the details and test results of both the numerical model and the experimental apparatus. The simulation results indicate a good accordance between the numerical and experimental data.

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Standardised methods for the determination of key performance indicators for thermal energy storage heat exchangers

Cited by 9 publications

References 162 publications

Experimental validation of a design model for latent thermal energy storage extended with sensible heat

Experimental validation of a design model for latent thermal energy storage extended with sensible heat

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

Analysis of a Phase Change Material-Based Condenser of a Low-Scale Refrigeration System

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