A comparison of experimental thermal stratification parameters for an oil/pebble-bed thermal energy storage (TES) system during charging

Mawire, Ashmore; Taole, S. H.

doi:10.1016/j.apenergy.2011.06.019

Cited by 54 publications

(14 citation statements)

References 34 publications

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“…For the purpose of improving thermal performance, numerous methods and parameters are proposed in the literature to characterize the level of stratification or efficiency during charging, discharging and the stand-by period [20][21][22]. In many of them, the characterisation of the transient temperature profile in the tank is required [23], [24].…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Simple inlet devices and their influence on thermal stratification in a hot water storage tank

Moncho-Esteve

Gasque

González-Altozano

et al. 2017

Energy and Buildings

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Section: Introduction and Objectivesmentioning

confidence: 99%

Simple inlet devices and their influence on thermal stratification in a hot water storage tank

Moncho-Esteve

Gasque

González-Altozano

et al. 2017

Energy and Buildings

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“…Thus, Haller et al [10] reviewed different methods proposed for characterising thermal stratification in energy storage during charging, storing and discharging in several theoretical cases. Castell et al [11] studied and compared the suitability and performance of different experimental working conditions during discharge, and the most widely used dimensionless numbers to characterise thermal stratification in water tanks, while Mawire and Taole [12] compared and evaluated six thermal stratification parameters under experimental charging conditions. In many cases, the application of certain indices or numbers used to evaluate the stratification necessarily requires the characterisation of the temperature distribution profile inside the tank and its evolution over time (see the classification and summaries of such numbers in [1,10,13]).…”

Section: Introductionmentioning

confidence: 99%

New methodology for the characterisation of thermal performance in a hot water storage tank during charging

González-Altozano

Gasque

Ibáñez

et al. 2015

Applied Thermal Engineering

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ElsevierGonzález Altozano, P.; Gasque Albalate, M.; Ibáñez Solís, F.; Gutiérrez-Colomer, RP. (2015). New methodology for the characterisation of thermal performance in a hot water storage tank during charging. Applied Thermal ABSTRACTIn solar water heating systems, the application of certain stratification indices requires the characterisation of the water temperature distribution profile inside the tank and its evolution. In order to avoid the limitations and drawbacks related to the discrete measures provided by experimental trials, this paper presents a newly developed method, called Virtual TC, which allows the water temperature to be estimated at any depth and at any time in a storage tank during the charge process. The proposed methodology can be very useful for estimating the numerous temperature-dependent indices employed for the characterisation and evaluation of thermal stratification in water storage tanks. As a practical example, it was successfully applied to determine the instantaneous temperature profile and thermocline thickness and its evolution throughout charging. It is concluded that the Virtual TC method gives highly satisfactory results under normal operational conditions for a hot water storage tank during the charge cycle.

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“…But integration of water storage systems in industrial processes are limited up to 100°C. For systems above 100°C, packed-bed TES systems with thermal oil and different particles are preferred [1]. On the other hand, air has low heat transfer coefficient and heat capacity.…”

Section: Introductionmentioning

confidence: 99%

Numerical Model of Lab-Scale Packed-Bed Thermal Energy Storage System

Koçak¹,

Paksoy²

2019

Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)

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This paper presents numerical modeling of labscale packed bed thermal energy storage (TES) system. In the packed-bed with 0.30 m diameter and 0.90 m height, monotype storage particles developed from demolition wastes are used. Synthetic thermal oil is be used as fluid phase between 80 -180°C. Schumann and one-dimensional continuous phase models are compared. To perform the two different numerical models, it was assumed that the length of packed bed was divided into 90 equal layers. Both numerical models showed smooth temperature profiles. Comparison of numerical results with experimental data will be studied in the future work.

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A comparison of experimental thermal stratification parameters for an oil/pebble-bed thermal energy storage (TES) system during charging

Cited by 54 publications

References 34 publications

Simple inlet devices and their influence on thermal stratification in a hot water storage tank

Simple inlet devices and their influence on thermal stratification in a hot water storage tank

New methodology for the characterisation of thermal performance in a hot water storage tank during charging

Numerical Model of Lab-Scale Packed-Bed Thermal Energy Storage System

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