登录查看更多内容

What are the different types of compressed air energy storage systems?

由人工智能和领英社区提供技术支持

Compressed air energy storage (CAES) is a method of storing mechanical energy by compressing and expanding air in different ways. CAES can be used to balance the supply and demand of electricity, especially from intermittent renewable sources like wind and solar. In this article, you will learn about the different types of CAES systems and how they work.

此文章中的业界达人

由社区从 4 条内容中精选。了解更多

Edwin Burwood

CEO & Engineering Director at Energy and Carbon Solutions Pty Ltd

1 Diabatic CAES

Diabatic CAES is the simplest and oldest form of CAES. It involves compressing air in a compressor and storing it in an underground cavern or tank. When the air is needed, it is released through a turbine that generates electricity. However, diabatic CAES has a low efficiency because the compression and expansion of air produce a lot of heat and cold, which are wasted. To overcome this problem, diabatic CAES uses natural gas or other fuels to heat the air before it enters the turbine, increasing the power output but also the emissions.

添加您的观点

Edwin Burwood

CEO & Engineering Director at Energy and Carbon Solutions Pty Ltd
(已编辑)
举报内容
In my experience with compressed air, as well as other energy storage method, the viability comes down to the round trip efficiency of the method. An air compressor is limited by the law of thermodynamics, with the compression stage having an approximate electrical energy to compressed air conversion of around 9-10% maximum. When it comes to converting from compressed air back to electrical energy, the electro-mechanical conversion is around 25-34%. Hence the limitation of this process of round trip energy/storage/energy conversion is around 2-3% maximum. When compared to battery technology of 90%+, then it is little comparison of energy conversion efficiency.

已翻译

赞
Joseph Phelan

Energy Efficiency | Data Analytics | Renewable Energy | Solution Sales | Masters Track Athlete
举报内容
Not sure I agree with @Edwin Burwood on such dismal efficiency numbers for CAES - I think it is more like 60% overall. Efficiency isn't the only factor, there is also fire safety risk, and technical/supply chain/warranty commercial counterparty risks of new battery techs. Compressed air systems can minimise this risk since anyone can replace a valve or pressure vessel, not just the OEM.

已翻译

赞
pritesh patel

Mechanical Maintenance Expert more than 21 year experience| Project Manager | Inventory Controller | Reverse Engineering Specialist |5S-TPM-PM |(RCA) | Planning & Scheduling |CAD Software Proficient (JSIS Oman)
举报内容
Each method has its pros and cons, so the choice depends on factors like efficiency, cost, and specific application requirements.

已翻译

赞

2 Adiabatic CAES

Adiabatic CAES is a more advanced and efficient form of CAES. It involves compressing air in a compressor and storing it in an insulated container, along with the heat generated by the compression. When the air is needed, it is released through a turbine that generates electricity, using the stored heat to increase the temperature and pressure of the air. Adiabatic CAES has a higher efficiency than diabatic CAES because it does not waste any heat or cold, and it does not need any external fuel to operate. However, adiabatic CAES requires more complex and expensive components and materials to store the heat and the air.

添加您的观点

Nicoletta Glod

Consultant System Engineering and Publishing
举报内容
The air-compressed system is a critical system for submarines. It provides air for various operations, including surfacing, submerging, and attacking. The system is also used to operate the central hydraulic system, start the main propulsion engines, discharge torpedoes, and blow tanks. The air systems represent one of the most versatile systems aboard a submarine in that they can perform either primary or secondary functions. Many of the operations are performed in a submarine. The submarine also has large containers for emergencies where compressed air is stored for any trouble and can provide additional independent resurface mode and breathing air. The subs have a network of accumulators, pressure regulators and filtering systems.

已翻译

赞

3 Isothermal CAES

Isothermal CAES is a theoretical and ideal form of CAES. It involves compressing and expanding air in a way that maintains a constant temperature throughout the process. This means that there is no heat or cold generated or wasted, and the efficiency is maximized. However, isothermal CAES is very difficult to achieve in practice, because it requires very fast and continuous heat transfer between the air and the surroundings. Isothermal CAES also requires very high pressures and volumes to store the air, which pose technical and safety challenges.

添加您的观点

4 Hybrid CAES

Hybrid CAES is a form of CAES that combines different features of diabatic, adiabatic, and isothermal CAES. It involves compressing air in a compressor and storing it in a container, along with some heat generated by the compression. When the air is needed, it is released through a turbine that generates electricity, using some external fuel to heat the air before it enters the turbine. Hybrid CAES has a higher efficiency than diabatic CAES because it uses less fuel and recovers some heat, but it has a lower efficiency than adiabatic CAES because it still wastes some heat and cold. Hybrid CAES also has a lower cost and complexity than adiabatic CAES because it uses less insulation and storage capacity.

添加您的观点

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

添加您的观点

Mechanical Engineering

+ 关注

给文章评分

我们借助人工智能创建了此文章。您认为这篇文章怎么样？

很棒不太好

举报此文章

查看全部

What are the different types of compressed air energy storage systems?

1

2

3

4

5

1 Diabatic CAES

2 Adiabatic CAES

3 Isothermal CAES

4 Hybrid CAES

5 Here’s what else to consider

Mechanical Engineering

给文章评分

感谢您的反馈

更多Mechanical Engineering相关文章

更多相关阅读内容

What are the different types of compressed air energy storage systems?

1

2

3

4

5

1 Diabatic CAES

2 Adiabatic CAES

3 Isothermal CAES

4 Hybrid CAES

5 Here’s what else to consider

Mechanical Engineering

给文章评分

感谢您的反馈

查看其他技能