Mathematical Modeling of a Small Scale Compressed Air Energy Storage System

Kılıç, Muhsin; Kocabiçak, Zeliha Kamiş; Topçu, Elif Erzan; Mutlu, Mustafa

doi:10.1007/978-3-319-04681-5_43

Cited by 3 publications

(2 citation statements)

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“…Apart from large scale CAES, the small‐scale CAES is starting to gain interest and seems to have great potential in the future . The advantage of this technology is that it is easy to set up in different areas, both above and underground.…”

Section: Introductionmentioning

confidence: 99%

“…10 Apart from large scale CAES, the small-scale CAES is starting to gain interest and seems to have great potential in the future. [11][12][13][14] The advantage of this technology is that it is easy to set up in different areas, both above and underground. Vongmanee and Monyakul 15 proposed a system for small-scale aboveground CAES storage, which was connected to an induction generator.…”

Section: Introductionmentioning

confidence: 99%

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Performance of a small‐scale compressed air storage (CAS)

Saputro

Farid

2018

Int J Energy Res

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Summary The use of renewable energy, such as wind and solar, has significantly increased in the last decade. However, these renewable technologies have the limitation of being intermittent; thus, storing energy in the form of compressed air is a promising option. In compressed air energy storage (CAES), the electrical energy from the power network is transformed into a high‐pressure storage system through a compressor. Then, when the demand for electricity is high, the stored high‐pressure air is used to drive a turbine to generate electricity. The advantages of CAES are its high energy density and quality, and for being environmentally friendly process. In the existing facilities of University of Auckland, New Zealand, air cavern is not available; thus, a high‐pressure tank is used to store the compressed air, which could provide an excellent opportunity for small size applications. There is a limited literature available on the temperature and pressure profiles in a typical high‐pressure tank during charging and discharging processes. Therefore, this research investigates how temperature and pressure inside a high‐pressure tank change during charging and discharging processes. It will provide a better understanding for heat transfer in such system. Furthermore, it will provide the necessary information needed for the designing of an efficient small‐scale CAES. In this work, air is compressed to a maximum pressure of 200 bar and stored into a 2 L tank, which is fully fitted with a pressure transducer and a thermocouple suitable for high‐pressure measurements. The charging and discharging process is theoretically modeled, and the results are compared with the experimental measurements, showing a good agreement. The heat balance on the system is used to validate the steady‐state condition, while dynamic analysis is used to predict the transient change of compressed air and tank wall temperatures. The theoretical modeling is undertaken by solving the differential equations describing the transient change in temperature of both air and tank wall. The results of this study show that air temperature rises from 24°C to 60°C at 100 bar and from approximately 17°C to over 60°C at 200 bar. During discharging process, air temperature drops from ambient to 5°C at starting pressure of 100 bar and to −20°C at starting pressure of 200 bar.

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Section: Introductionmentioning

confidence: 99%