Evaluation of energy losses in the compressed air energy storage process

GU Jianwei; WU Shengnan; HE Zhihao; LIU Shihao; PING Jiaxin

doi:10.19799/j.cnki.2095-4239.2025.0772

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Evaluation of energy losses in the compressed air energy storage process

Energy Storage Test\: Methods and Evaluation | 更新时间：2026-07-01

- Evaluation of energy losses in the compressed air energy storage process
- Energy Storage Science and Technology Vol. 15, Issue 4, Pages: 1463-1471(2026)
- 作者机构：
  
  中国石油大学(华东)，山东青岛 266580
- 作者简介：
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2025.0772
  CLC： TE 53
- Received：28 August 2025，
  
  Revised：2025-11-22，
  
  Published：28 April 2026
- 稿件说明：
移动端阅览
谷建伟, 吴胜男, 何志豪, 等. 压缩空气储能过程中的能量损失评价[J]. 储能科学与技术, 2026, 15(4): 1463-1471.

GU Jianwei, WU Shengnan, HE Zhihao, et al. Evaluation of energy losses in the compressed air energy storage process[J]. Energy Storage Science and Technology, 2026, 15(4): 1463-1471.
谷建伟, 吴胜男, 何志豪, 等. 压缩空气储能过程中的能量损失评价[J]. 储能科学与技术, 2026, 15(4): 1463-1471. DOI： 10.19799/j.cnki.2095-4239.2025.0772.

GU Jianwei, WU Shengnan, HE Zhihao, et al. Evaluation of energy losses in the compressed air energy storage process[J]. Energy Storage Science and Technology, 2026, 15(4): 1463-1471. DOI： 10.19799/j.cnki.2095-4239.2025.0772.

摘要

含水层压缩空气储能(CAESA)技术因储能规模大、环境友好等特点，是一种潜在的大规模储能方式，然而在高速注采空气过程中产生能量损失的程度和环节尚不明确。本工作在考虑非达西渗流特性、井筒-地层耦合计算的基础上，通过理论分析和数值模拟方法，计算高速注采过程中井筒-地层中压缩空气体系的压力、流量、温度分布，提出了以焓值、压能、内能和动能为核心的多指标能量损失评价体系，定量分析了注采循环中各能量分量的变化规律，分析影响能量损失的主要因素，并提出降低能量损失对策。研究结果表明：压能损失是系统能量损耗的主要形式，占总能量的78%~88%；采出阶段的摩阻损失和动能损失分别是注入阶段的4.7~5.3倍和4.6~5.1倍；通过优化工作气量(

5×10

)、改善井底渗流条件(表皮系数

0)和降低井筒粗糙度(

1%)可显著减少能量损失；将气体注入地层深处可对气体实现加温，开采地热能，补偿其他能量损失，提升整体能量。本研究为CAESA系统的优化设计和高效运行提供了理论依据和技术支撑。

Abstract

Aquifer compressed air energy storage (CAESA) technology

characterized by large storage capacity and environmental friendliness

is a promising large-scale energy storage approach. However

the extent and pathways of energy loss during high-speed air injection and production remain unclear. Considering non-Darcy seepage and wellbore-stratum coupling

this study determines the pressure

flow rate

and temperature distributions of the compressed air system in the wellbore and formation during high-speed injection and production through theoretical analysis and numerical simulation. A multi-index energy loss evaluation

system centered on enthalpy

pressure energy

internal energy

and kinetic energy is proposed to quantitatively analyze variations of each energy component in the injection-production cycle

identify key factors affecting energy loss

and propose mitigation measures. Results indicate that pressure energy loss constitutes the primary form of system energy dissipation

accounting for 78%—88% of total energy. Friction and kinetic energy losses during the production stage are 4.7—5.3 times and 4.6—5.1 times those during the injection stage

respectively. Energy loss can be significantly reduced by optimizing working gas volume (

5×10

)

improving bottom-hole seepage conditions (skin factor

and lowering tubing roughness (

1%). Injecting gas into deep formations enables gas heating and geothermal energy exploitation

offsetting other energy losses and enhancing overall energy performance. This study provides a theoretical basis and technical support for optimal design and efficient operation of CAESA systems.

关键词

Keywords

references

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