How can pressure be used to generate electricity?
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- Low power and high-pressure volumetric expanders are better.
- But in volumetric systems, the pressure drop at the inlet and outlet gets too big at high power.
- High power is something >100kW.
- Hydroelectricity is the most common method of generating electricity.
- Water is stored in a high dam or an artificial or natural lake or reservoir. This water stored in a high place has gravitational potential energy
- Low-pressure high power is good for turbines.
- It is a matter of leak flow and pressure drop.
- Ex : Pizo-electric generators can generate electrical energy from pressure changes.
- In atomic power pressure from the heated fluid is used to generate electric power.
- Pressure occurs naturally as a by-product of most events and is a factor in most if not all forms of energy generation
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