OUR TECHNOLOGY

OUR TECHNOLOGY

Enabling high storage density at ambient temperature

CO2 is the perfect fluid to store energy cost effectively in a closed thermodinamic process as it is one of the few gasses that can be condensed and stored as a liquid under pressure at ambient temperature allowing for high density energy storage without the need to go at extreme cryogenic temperatures.
CO2 is the perfect fluid to store energy cost effectively in a closed thermodinamic process as it is one of the few gasses that can be condensed and stored as a liquid under pressure at ambient temperature allowing for high density energy storage without the need to go at extreme cryogenic temperatures.
 

Our propriatory technology is based on a closed thermodynamic transformation that, by manipulating CO2 between its gaseous and liquid phase, allows to store electricity efficiently and cost effectively.

In charging mode the CO2 is compressed and stored under pressure at ambient temperature in a high density supercritical or liquid state. When energy is to be released, the CO2 is expanded into a turbine and stored back into an atmospheric gasholder, the Dome, ready for the next charging cycle.

By storing in the liquid phase at ambient temperature we significantly reduce the storage costs typical of CAES (Compressed Air Energy Storage) without having to deal with cryogenic temperatures as in the case of LAES (Liquid Air Energy Storage).

 

Our propriatory technology is based on a closed thermodynamic transformation that, by manipulating CO2 between its gaseous and liquid phase, allows to store electricity efficiently and cost effectively.

In charging mode the CO2 is compressed and stored under pressure at ambient temperature in a high density supercritical or liquid state. When energy is to be released, the CO2 is expanded into a turbine and stored back into an atmospheric gasholder, the Dome, ready for the next charging cycle.

By storing in the liquid phase at ambient temperature we significantly reduce the storage costs typical of CAES (Compressed Air Energy Storage) without having to deal with cryogenic temperatures as in the case of LAES (Liquid Air Energy Storage).


The principle

CO2


alt-text
1 kg of CO2
0.55 m3
High Pressure (70 bar)
Ambient temperature
1.3 liters
66.7 kWh/m3
alt-text
1kg of Air
0.82 m3
High Pressure (70 bar)
Ambient temperature
12 liters liters
2-6 kWh/m3
alt-text
1kg of Air
0.82 m3
Few bar
-190°C
1.1 liters
107 kWh/m3

CAES (Compressed Air Energy Storage) technology is a way of storing energy by compressing air and storing it under pressure. Air is not the perfect fluid to store energy because its energy density under pressure is very low, this means that to store energy cost effectively the only way is to use underground caverns which make this system site dependent limiting its competitiveness.

LAES (Liquid Air Energy Storage) solves this issue by liquifying air hence reaching very high energy densities, but this high energy density comes with the complexity of having to deal with cryogenic temperatures making the system complex and not cost effective. Using CO2 instead of air allows to reach very high energy densities, competitive with LAES, but being able to store energy at ambient temperature, as in the case of CAES, without the need to depend on any specific site conditions.

The principle

CO2


alt-text
Starting
1 kg of CO2
Volume at ambient conditions
0.55 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
1.3 liters
Energy Storage density
66.7 kWh/m3
alt-text
Starting
1 kg of CO2
Volume at ambient conditions
0.55 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
1.3 liters
Energy Storage density
66.7 kWh/m3
alt-text
Starting
1kg of Air
Volume at ambient conditions
0.82 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
12 liters liters
Energy Storage density
2-6 kWh/m3
alt-text
Starting
1kg of Air
Volume at ambient conditions
0.82 m3
Pressure in Storage conditions
15 bar
Temp. in Storage conditions
-190°C
Volume in Storage conditions
1.1 liters
Energy Storage density
107 kWh/m3

CAES (Compressed Air Energy Storage) technology is a way of storing energy by compressing air and storing it under pressure. Air is not the perfect fluid to store energy because its energy density under pressure is very low, this means that to store energy cost effectively the only way is to use underground caverns which make this system site dependent limiting its competitiveness.

LAES (Liquid Air Energy Storage) solves this issue by liquifying air hence reaching very high energy densities, but this high energy density comes with the complexity of having to deal with cryogenic temperatures making the system complex and expensive. Using CO2 instead of air allows to reach very high energy densities, competitive with LAES, but being able to store energy at ambient temperature, as in the case of CAES, without the need to depend on any specific site conditions.

We combine the advantages of CAES and LAES overcoming their limitations

We combine the advantages of CAES and LAES overcoming their limitations

CO2 is one of the best gasses to be compressed and expanded thanks to the heavy weight of its molecules. CO2 turbomachineries are efficient machines with very limited losses which provides a significan contribution to the efficiency of the process. Furthermore CO2 is not flammable nor explosive and can be safely stored within a closed system without major hazzards for health and safety.

High system efficiency, enhanced flexibility, strong reliability and economic competiveness make EnergyDome’s technology the best way of storing energy. Based on these principles we have developed a series of products designed to reply to the growing needs of the energy market.

CO2 is one of the best gasses to be compressed and expanded thanks to the heavy weight of its molecules. CO2 turbomachineries are efficient machines with very limited losses which provides a significan contribution to the efficiency of the process. Furthermore CO2 is not flammable nor explosive and can be safely stored within a closed system without major hazzards for health and safety.

High system efficiency, enhanced flexibility, strong reliability and economic competiveness make EnergyDome’s technology the best way of storing energy. Based on these principles we have developed a series of products designed to reply to the growing needs of the energy market.

INTELLECTUAL PROPERTY

In Energy Dome we clearly understand the value of our intellectual property and how properly deployed IP protections can translate into category-leading products and enhanced market values. That is why our technology development team works closely with a dedicated team of patent attorneys in developing a significant portfolio of patents covering all aspects of our proprietary technology protecting our innovations and our business.

INTELLECTUAL PROPERTY

In Energy Dome we clearly understand the value of our intellectual property and how properly deployed IP protections can translate into category-leading products and enhanced market values. That is why our technology development team works closely with a dedicated team of patent attorneys in developing a significant portfolio of patents covering all aspects of our proprietary technology protecting our innovations and our business.

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