Flow and heat transfer characteristics of air compression in a liquid piston for compressed air energy storage

Gouda, El Mehdi; Benaouicha, Mustapha; Neu, Thibault; Fan, Yilin

doi:10.1016/j.energy.2022.124305

Cited by 31 publications

(12 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flow and heat transfer inside the LP are modeled using FVM (Finite Volume Method) to solve the Navier-Stokes equations coupled with the VOF (Volume Of Fluid) model for the water/air interface tracking. This method has shown its efficiency and adaptability to the modeling of similar flow problems, i.e stratified multi-phase flows with high density ratios [29,33]. It has been successfully used in our previous study [29] for simulating the LP compression process, showing good agreement with the experimental measurements and capableness of capturing different flow patterns and the conjugated heat transfer behaviors.…”

Section: Vof Methods For Air Compression/expansion With Heat Transfermentioning

confidence: 99%

“…This method has shown its efficiency and adaptability to the modeling of similar flow problems, i.e stratified multi-phase flows with high density ratios [29,33]. It has been successfully used in our previous study [29] for simulating the LP compression process, showing good agreement with the experimental measurements and capableness of capturing different flow patterns and the conjugated heat transfer behaviors. The same method is therefore used in the present study, for the first time, to simulate the complete CCE cycle using a LP.…”

Section: Vof Methods For Air Compression/expansion With Heat Transfermentioning

confidence: 99%

“…Grid independence study was firstly conducted to determine the appropriate mesh size and structure for the numerical simulations. Hexahedral mesh has proven its effectiveness and accuracy for this type of geometry and flows in our earlier work [29], thus has been chosen for this study. A structured O-Grid mesh was used (Fig.…”

Section: Mesh Convergence Studymentioning

confidence: 99%

“…Their results showed that, while the impacts of these inserts on the efficiency could be noticeable, a close-to-isothermal operation cycle could be realized by LP. Later on, Wieberdink et al [26] extended the study to a higher pressure range (210 [29]. Different air flow patterns and its evolution during the complete cycle were visualized, and the conjugated heat transfer inside the LP column were analysed in detail for the first time.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage

Gouda

Neu

Benaouicha³

et al. 2023

Energy

Self Cite

View full text Add to dashboard Cite

Section: Vof Methods For Air Compression/expansion With Heat Transfermentioning

confidence: 99%

Section: Vof Methods For Air Compression/expansion With Heat Transfermentioning

confidence: 99%

Section: Mesh Convergence Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage

Gouda

Neu

Benaouicha³

et al. 2023

Energy

Self Cite

View full text Add to dashboard Cite

“…Figure 2: Comparison of the evolution of the average air temperature between the experimental and numerical results. 𝜎𝜎 = 2.6𝐾𝐾 is the error margin of the experimental results(adapted from[10])…”

mentioning

confidence: 99%

CFD Study Of Flow And Heat Transfer During Compression Process In A Liquid Piston For Isothermal Compressed Air Energy Storage

Mehdi¹,

Mustapha²,

Thibault³

et al. 2022

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

Liquid piston technology has proved its efficiency into the achievement of Isothermal Compressed Air Energy Storage. While the concept is no more a new one, the description and the understanding of the physics of the flow and heat transfer during compression process are not completely achieved. Through a CFD study based on the resolution of Navierstokes equations and VOF method for interface tracking, a characterization of the flow and heat transfer inside the liquid piston, which are complex, are presented. The numerical results were validated and compared with the ones obtained in a former experimental study. Both velocity and temperature fields and profiles are analyzed locally and globally. In this study, it is found that with a compression ratio of 5 and compression time of 21s, the air's average temperature rises non linearly with 32K. The velocity and temperature profiles undergo several stages. A characteristic structure appears at the beginning of the compression where the flow is axisymmetric and remains so until its disruption. It is observed that the structure disruption occurs closer to the cylinder head moments after the highest local velocities are observed. Velocity fields analysis show that the air's velocity can be higher than 10 time the piston velocity.

show abstract

Liquid Piston Compression Heat Transfer Prediction via Thermal‐Resistance Network: Simulation, Experimental Validation, and Liquid Carryover Evaluation

Middleton,

Bernagozzi,

Morgan

et al. 2024

Energy Tech

View full text Add to dashboard Cite

Liquid piston compressors gain attention due to their potential for more efficient and isothermal compression compared to traditional solid piston compressors. Liquid piston compressors use a liquid column instead of a solid piston, allowing for innovative mechanisms to enhance heat transfer and achieve near‐isothermal compression. However, a validated analytical model for heat transfer in liquid piston compressors is still needed to understand the exhaust phase within a liquid piston. In this work, a thermal network model, able to predict the polytropic index to within 8% of the experimental results, is proposed. Moreover, thorough experimentation is conducted to measure the amount of liquid carried over to better understand the exhaust phase. In the results, it is revealed that the piston carries over 13–21 mL of liquid within the exhaust gas for 10–23 s of stroke. Notably, the difference in liquid carried over for the three‐stroke times is not statistically significant, indicating that the liquid carried over is a function of liquid piston design and not stroke time. Finally, most liquid piston applications consider only water; hence, for the first time, this research assesses the stability of a cycle using a nonflammable hydraulic fluid (Fuchs 46 M red) to enhance compressor longevity and material compatibility.

show abstract

Flow and heat transfer characteristics of air compression in a liquid piston for compressed air energy storage

Cited by 31 publications

References 36 publications

Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage

Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage

CFD Study Of Flow And Heat Transfer During Compression Process In A Liquid Piston For Isothermal Compressed Air Energy Storage

Liquid Piston Compression Heat Transfer Prediction via Thermal‐Resistance Network: Simulation, Experimental Validation, and Liquid Carryover Evaluation

Contact Info

Product

Resources

About