WITHDRAWN: Analysis of a hybrid cascaded latent/sensible storage system for parabolic- trough solar thermal plants

Muhammad, M.D.; Badr, O.

doi:10.1016/j.solener.2017.07.078

Cited by 1 publication

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“…In each axial segment (Figure 2b), the heat transfer was assumed to be one dimensional in the radial direction. The heat transfer in and out of the finned annular gap was estimated by using an effective heat transfer coefficient obtained using CFD considering a single finned annular gap [35,36]. Finned segments ( Figure 2b) are placed in series to form a finned LHS element.…”

Section: Modelling Cascaded Finned Latent Heat Storage (Lhs) Modelmentioning

confidence: 99%

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Analysis of a Hybrid Cascaded Latent/Sensible Storage System for Parabolic-Trough Solar Thermal Plants

Muhammed

Badr

2021

Journal of Thermal Engineering

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The molten-salt two-tank system is the state-of-the-art thermal storage technology employed in the more mature parabolic-trough solar thermal power generation using synthetic oil as the heat-transfer fluid (HTF). This storage technology requires high storage-material inventory, making it very expensive. The use of latent-heat storage (LHS) system offers smaller storage size and material inventory. However, such a storage system faces two challenges: there are limited number of commercially-available phase-change materials (PCMs) are suitable in the operating temperature range; and these materials have very low thermal conductivities. The use of finned tubes, nevertheless, can overcome the later shortcoming. In this study, the analysis of a hybrid storage system, consisting of a three cascaded finned-tube LHS stages and a sensible concrete tube register stage, was carried out through modelling and simulation. A procedure for the design of the finned-tube cascaded LHS stages was developed. For a typical 50 MW parabolic-trough solar thermal power plant, the dimensions of a storage system with 6 hours of operation at full load were obtained. The three-stage cascaded LHS sub-system provides 45.5% of the total storage capacity of the entire system and has a volumetric specific capacity of 54% greater than that of the two-tank system. The volumetric specific capacity of the entire storage system is 9.3% greater than that of the two-tank system.

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Section: Modelling Cascaded Finned Latent Heat Storage (Lhs) Modelmentioning

confidence: 99%

“…The effective heat transfer coefficient (ℎ) during the charging and the discharging processes were obtained by [35] and [36] using CFD simulations by considering a single finned annular gap. For the charging process the quasi-stationary heat transfer coefficient is presented by equations (7)-(9) for the three PCMs considered.…”

Section: Finned Annular Gap Modelmentioning

confidence: 99%

Analysis of a Hybrid Cascaded Latent/Sensible Storage System for Parabolic-Trough Solar Thermal Plants

Muhammed

Badr

2021

Journal of Thermal Engineering

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WITHDRAWN: Analysis of a hybrid cascaded latent/sensible storage system for parabolic- trough solar thermal plants

Cited by 1 publication

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Analysis of a Hybrid Cascaded Latent/Sensible Storage System for Parabolic-Trough Solar Thermal Plants

Analysis of a Hybrid Cascaded Latent/Sensible Storage System for Parabolic-Trough Solar Thermal Plants

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