Demonstration of EnergyNest thermal energy storage (TES) technology | Zendy

Nils Høivik | Zendy; Christopher J. Greiner | Zendy; Eva Bellido Tirado | Zendy; Juan Barragan | Zendy; Pál G. Bergan | Zendy; Geir Skeie | Zendy; Pablo Blanco | Zendy; Nicolas Calvet | Zendy

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Demonstration of EnergyNest thermal energy storage (TES) technology

Author(s) -

Nils Høivik,

Christopher J. Greiner,

Eva Bellido Tirado,

Juan Barragan,

Pál G. Bergan,

Geir Skeie,

Pablo Blanco,

Nicolas Calvet

Publication year - 2017

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4984432

Subject(s) - thermal energy storage , heat exchanger , thermal conductivity , materials science , energy storage , molten salt , heat transfer , thermal , mechanical engineering , thermal energy , computer data storage , process engineering , nuclear engineering , engineering , environmental science , computer science , composite material , thermodynamics , physics , metallurgy , power (physics) , operating system

This paper presents the experimental results from the EnergyNest 2 × 500 kWhth thermal energy storage (TES) pilot system installed at Masdar Institute of Science & Technology Solar Platform. Measured data are shown and compared to simulations using a specially developed computer program to verify the stability and performance of the TES. The TES is based on a solid-state concrete storage medium (HEATCRETE®) with integrated steel tube heat exchangers cast into the concrete. The unique concrete recipe used in the TES has been developed in collaboration with Heidelberg Cement; this material has significantly higher thermal conductivity compared to regular concrete implying very effective heat transfer, at the same time being chemically stable up to 450 °C. The demonstrated and measured performance of the TES matches the predictions based on simulations, and proves the operational feasibility of the EnergyNest concrete-based TES. A further case study is analyzed where a large-scale TES system presented in this article is compared to two-tank indirect molten salt technology.This paper presents the experimental results from the EnergyNest 2 × 500 kWhth thermal energy storage (TES) pilot system installed at Masdar Institute of Science & Technology Solar Platform. Measured data are shown and compared to simulations using a specially developed computer program to verify the stability and performance of the TES. The TES is based on a solid-state concrete storage medium (HEATCRETE®) with integrated steel tube heat exchangers cast into the concrete. The unique concrete recipe used in the TES has been developed in collaboration with Heidelberg Cement; this material has significantly higher thermal conductivity compared to regular concrete implying very effective heat transfer, at the same time being chemically stable up to 450 °C. The demonstrated and measured performance of the TES matches the predictions based on simulations, and proves the operational feasibility of the EnergyNest concrete-based TES. A further case study is analyzed where a large-scale TES system presented in thi...

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