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Mathematical Modeling of a Small Scale Compressed Air Energy Storage System

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Progress in Exergy, Energy, and the Environment

Abstract

Using compressed air to store energy is one of the energy storage methods. In this study, a small scale compressed air energy storage (CAES) system is designed and modeled. The energy storage capacity of designed CAES system is about 2 kW. The system contains a hydraulic pump unit, expansion–compression liquid pistons, valves, a tank, and a control unit. The aim of the designed system is basically to store air under a defined pressure. The designed CAES system is modeled and simulated by MATLAB/Simulink program. Pressure changes in the tank and pistons are obtained. Besides, energy storage capacity of the system for different pressures is investigated in isothermal conditions.

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Acknowledgments

This project is supported by Scientific and Technological Research Council of Turkey, under project number: 111M015. Authors thank the Scientific and Technological Research Council of Turkey.

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Correspondence to Muhsin Kiliç .

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Nomenclature

Nomenclature

R:

Universal gas constant (J/kgK)

T:

Air temperature (K)

Patm :

Atmospheric pressure (N/m2)

Ptank :

Tank pressure (N/m2)

Vtank :

Tank volume (m3)

Q:

Flow rate (m3/s)

Dp :

Pump displacement (m3/rev)

npump :

Pump speed (rev/min)

V:

Liquid piston volume (m3)

Vdead :

Dead volume (m3)

D:

The diameter of liquid piston (m)

L:

The length of liquid piston (m)

Ldead :

The dead length of liquid piston (m)

A:

Area of liquid piston (=\( \frac{{\uppi \mathrm{D}}^2}{4} \))

ηv :

Volumetric efficiency

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Kiliç, M., Kocabiçak, Z.K., Topçu, E.E., Mutlu, M. (2014). Mathematical Modeling of a Small Scale Compressed Air Energy Storage System. In: Dincer, I., Midilli, A., Kucuk, H. (eds) Progress in Exergy, Energy, and the Environment. Springer, Cham. https://doi.org/10.1007/978-3-319-04681-5_43

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  • DOI: https://doi.org/10.1007/978-3-319-04681-5_43

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-04680-8

  • Online ISBN: 978-3-319-04681-5

  • eBook Packages: EnergyEnergy (R0)

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