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CFD-subset-FVM-based MATLAB-simulation of Heat Transfer in High Grade Cold Storage Augmenting Cryogenic Energy Storage System by Circulating Natural Gas as Working Fluid : Conceptual Review

Prof.Dr. A. Kanni Raj

Abstract


Abstract. Cryogenic Energy Storage (CES) improves power grid with renewable intermittent power sources. In CES, off-peak excess electricity liquefies air or natural gas. Cryogen is stored in large dewar tanks for long periods of time. Whenever electricity need is in peak, work is recovered from cryogen by a power cycle using waste heat. Many researchers focus on liquid air energy storage (LAES). But, natural gas is promising working fluid for CES. This paper reviews a natural gas-based CES system, coupled with a high grade cold storage (HGCS) unit. Cold that is stored at a low temperature is used to raise efficiency and hike yield of liquefier. This paper models HGCS unit and compares output with experimental data. Impact of cold recycling is analyzed for liquefier yield and storage efficiency.

Keywords: Cold Storage, FVM, CFD, MATLAB, Cryogenic Energy Storage, Natural gas, Exergy

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References


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DOI: https://doi.org/10.37628/jrec.v5i2.829

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