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Pressure let-down gas expanders
In pressure let-down stations, natural gas pressure must be decreased to distribution network pressure. In this process, potential energy, available as high-pressure difference, is completely lost in the throttling process through a valve. This waste energy can be efficiently recovered to produce zero emission electricity through Exergy’s gas expander.
Exergy has designed a natural gas expander system that integrates into existing pressure let-down gas stations, serving both industries and residential buildings, to increase the efficiency and sustainability of the gas distribution system.
enhancing efficiency in gas operations.
The advantages of Exergy's solution:
1
HIGH CUSTOMIZATION
Depending on project requirements, Exergy can select the most suitable design to achieve the highest performance
2
TURNKEY SOLUTION
Supply of the complete package for revamping pressure let-down stations
3
LOW FOOTPRINT
A compact solution with minimal spatial requirements
4
HIGH EFFICIENCY
Increase in efficiency by up to 80%
5
HIGH RELIABILITY
Use of proven technology and equipment
Use of a traditional pressure let-down station always in parallel with Exergy’s gas expander
6
HIGH PROFITABILITY
Increased operational profitability thanks to additional power production
7
SUSTAINABILITY
Zero emission clean energy source
Circular model of energy recovery
1
HIGH CUSTOMIZATION
Depending on project requirements, Exergy can select the most suitable design to achieve the highest performance
2
TURNKEY SOLUTION
Supply of the complete package for revamping pressure let-down stations
3
LOW FOOTPRINT
A compact solution with minimal spatial requirements
4
HIGH EFFICIENCY
Increase in efficiency by up to 80%
5
HIGH RELIABILITY
Use of proven technology and equipment
Use of a traditional pressure let-down station always in parallel with Exergy’s gas expander
6
HIGH PROFITABILITY
Increased operational profitability thanks to additional power production
7
SUSTAINABILITY
Zero emission clean energy source
Circular model of energy recovery
How a gas expander system works
A heat exchanger for gas preheating is positioned upstream from the expander.
The pressure let-down station lamination valves are replaced with the expander (turbine).
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A generator is coupled with the expander to produce electricity, while achieving, at the system outlet, the desired pressure and temperature for natural gas distribution.
