Exergy based performance evaluation of latent heat thermal storage system: A review

Jegadheeswaran, S.; Pohekar, S.D.; Kousksou, T.

doi:10.1016/j.rser.2010.07.051

Cited by 189 publications

(69 citation statements)

References 93 publications

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“…Therefore the quantities related to the whole storage tank and total charging/discharging cycle can be calculated integrating in x and t the local values. The exergy flow balance for the storage system can be written as [36,37]: …”

Section: Storage Tank Wallsmentioning

confidence: 99%

Modelling and simulation of phase change material latent heat storages applied to a solar-powered Organic Rankine Cycle

2016

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Solar energy is one of the most promising renewable energy sources, but is intermittent by its nature. The study of efficient thermal heat storage technologies is of fundamental importance for the development of solar power systems. This work focuses on a robust mathematical model of a Latent Heat Storage (LHS) system constituted by a storage tank containing Phase Change Material spheres. The model, developed in EES environment, provides the time-dependent temperature profiles for the PCM and the heat transfer fluid flowing in the storage tank, and the energy and exergy stored as well. A case study on the application of the LHS technology is also presented. The operation of a solar power plant associated with a latent heat thermal storage and an ORC unit is simulated under dynamic (time-varying) solar radiation conditions with the software TRNSYS. The performance of the proposed plant is simulated over a one week period, and the results show that the system is able to provide power in 78.5% of the time, with weekly averaged efficiencies of 13.4% for the ORC unit, and of 3.9% for the whole plant (from solar radiation to net power delivered by the ORC expander).

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Section: Storage Tank Wallsmentioning

confidence: 99%

Modelling and simulation of phase change material latent heat storages applied to a solar-powered Organic Rankine Cycle

2016

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“…Minimum entropy generation analysis has been applied to thermal insulation problems involving minimum heat transfer at fixed temperature difference and thermal enhancement involving minimum temperature difference to exchange a fixed heat flux [2]. In the literature, there are numerous applications of entropy generation analysis to storage systems [5][6][7], fluid flow within technical devices [8][9][10], engines [11,12], heat exchangers [13,14] and desalination plants [15].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation Analysis of Wildfire Propagation

Guelpa

Verda

2017

Entropy

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Entropy generation is commonly applied to describe the evolution of irreversible processes, such as heat transfer and turbulence. These are both dominating phenomena in fire propagation. In this paper, entropy generation analysis is applied to a grassland fire event, with the aim of finding possible links between entropy generation and propagation directions. The ultimate goal of such analysis consists in helping one to overcome possible limitations of the models usually applied to the prediction of wildfire propagation. These models are based on the application of the superimposition of the effects due to wind and slope, which has proven to fail in various cases. The analysis presented here shows that entropy generation allows a detailed analysis of the landscape propagation of a fire and can be thus applied to its quantitative description.

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“…There are however limitations on these applications due to the law of solar radiation [6,7]. Heat storage technology can provide potential solution to these limitations [7][8][9]. The phase change thermal storage technology has a number of advantages over other thermal storage systems: large heat storage capacity, compactness [10,11], high thermal efficiency, stable operating temperature during heat exchange process and easy operation.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Thermal Discharge Performance of A Phase Change Thermal Storage Material

Sun¹,

Xu²,

Yang³

et al. 2015

TOMSJ

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Thermal energy storage (TES) equipment utilizing phase change material (PCM) was designed and built. The PCM was sealed inside metal tubes and exchanged heat with process fluid flowing outside. The storage capacity characteristics of the system were analyzed based on data covering the inlet and outlet temperatures of the process fluid, volumetric flow rate of the process fluid and temperature change of the PCM.

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Exergy based performance evaluation of latent heat thermal storage system: A review

Cited by 189 publications

References 93 publications

Modelling and simulation of phase change material latent heat storages applied to a solar-powered Organic Rankine Cycle

Modelling and simulation of phase change material latent heat storages applied to a solar-powered Organic Rankine Cycle

Entropy Generation Analysis of Wildfire Propagation

Experimental Study on Thermal Discharge Performance of A Phase Change Thermal Storage Material

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