Characterization of a latent thermal energy storage heat exchanger using a charging time energy fraction method with a heat loss model

Couvreur, Kenny; Beyne, Wim; Tassenoy, Robin; Lecompte, Steven; Paepe, Michel De

doi:10.1016/j.applthermaleng.2022.119526

Cited by 10 publications

(12 citation statements)

References 106 publications

(158 reference statements)

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“…The LTES heat exchanger is a shell and tube heat exchanger which was previously described in [4]. The shell has a rectangular cross section of 0.706 by 0.5 m with a total length of 7.43 m and is constructed from P265GH steel.…”

Section: Experimental Setup Descriptionmentioning

confidence: 99%

“…The paper describing the experimental setup [4] contains a numerical model for the charging of the LTES system. In this model, the shell and tube heat exchanger is modeled as a parallel connection of 36 tube in tube heat exchangers.…”

Section: Modelmentioning

confidence: 99%

“…The measured integrated efflux increases further beyond this point due to heat losses. The setup is insulated however significant heat losses up to 10 % of the stored energy are reported during charging [4]. As neither the sensible heat, nor the latent heat sub model estimate the heat losses, the modeling approaches are no longer accurate near the end of charging when the effect of heat losses becomes more significant.…”

Section: Experimental Validationmentioning

confidence: 99%

“…The downside of the method is that only the average outlet temperature can be predicted and not the outlet temperature as a function of time. The charging time energy fraction method was developed as an alternative technique which predict the outlet temperature as a function of time [4,5]. However, this method does not allow sizing of the system.…”

Section: Introductionmentioning

confidence: 99%

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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: Experimental Setup Descriptionmentioning

confidence: 99%

Section: Modelmentioning

confidence: 99%

Section: Experimental Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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show abstract

“…Continuous effort is addressed to increase the technical parameter and operational protocol for the LTES system, especially for estimating the state of charge (SoC) percentage [6] . The SoC percentage is an essential parameter for the storage system, particularly for the active system which uses working fluid [7] , [8] , [9] , to indicate the total energy stored within the system, similar to the indicator percentage for the electric battery.…”

Section: Hardware In Contextmentioning

confidence: 99%

Hybrid energy-temperature method (HETM): A low-cost apparatus and reliable method for estimating the thermal capacity of solid–liquid phase change material for heat storage system

Firman,

Rahmalina,

Ismail

et al. 2023

HardwareX

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Optimisation of thermal energy storage systems incorporated with phase change materials for sustainable energy supply: A systematic review

Odoi-Yorke,

Opoku,

Davis

et al. 2023

Energy Reports

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Characterization of a latent thermal energy storage heat exchanger using a charging time energy fraction method with a heat loss model

Cited by 10 publications

References 106 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

Hybrid energy-temperature method (HETM): A low-cost apparatus and reliable method for estimating the thermal capacity of solid–liquid phase change material for heat storage system

Optimisation of thermal energy storage systems incorporated with phase change materials for sustainable energy supply: A systematic review

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