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Questions and Answers
What is the main principle behind high pressure water separation?
What is the main principle behind high pressure water separation?
Which component follows the primary heat exchanger in the high pressure water separation process?
Which component follows the primary heat exchanger in the high pressure water separation process?
What effect does the condenser have on the air in the high pressure water separation process?
What effect does the condenser have on the air in the high pressure water separation process?
What temperature does the cooling air reach as it exits the turbine?
What temperature does the cooling air reach as it exits the turbine?
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After the water is extracted, what happens to it in the high pressure water separation system?
After the water is extracted, what happens to it in the high pressure water separation system?
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What factor determines the amount of water that air can dissolve in high pressure water separation?
What factor determines the amount of water that air can dissolve in high pressure water separation?
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What is the role of the condenser in the high pressure water separation system?
What is the role of the condenser in the high pressure water separation system?
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In which component does the air first pass after it leaves the compressor?
In which component does the air first pass after it leaves the compressor?
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What type of air is primarily used to cool the air in the condenser?
What type of air is primarily used to cool the air in the condenser?
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Where does the water extracted from the air go in the high pressure water separation process?
Where does the water extracted from the air go in the high pressure water separation process?
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Study Notes
High Pressure Water Separation
- High pressure water separation relies on the principle that colder air holds less moisture.
- Only compressed air from the compressor, cooled by the main heat exchanger, undergoes high pressure water separation.
- Bypassed air is not involved in this process.
- Air from the pneumatic system passes through a pack valve, entering a primary heat exchanger.
- The air then travels to a secondary or main heat exchanger.
- Water-laden air moves to a reheater (air-to-air heat exchanger) using turbine inlet air for cooling.
- The air is further cooled by a condenser (air-to-air heat exchanger) using turbine outlet air, which is sub-zero temperature.
- The condenser cools the air to its dew point, approximately 0°C at sea level.
- Condensed water is collected in a water extractor and sprayed onto the ram air inlet side of the main heat exchanger.
- After the water extractor, the air passes through the reheater again, increasing its temperature.
- The air then goes to the air cycle machine turbine inlet.
- After leaving the turbine, the air passes through the condenser before reaching the cabin.
High Pressure Water Separation
- This method uses the principle that cold air can hold less moisture than warm air.
- Only compressed air from the compressor, after cooling through the main heat exchanger, enters the water separation loop.
- Bypassed air does not go through the water separation loop.
- Air from the pneumatic system passes through an open pack valve.
- The air first passes through a primary heat exchanger.
- Then, it flows through the compressor and a secondary or main heat exchanger.
- Next, the water-loaded air travels through a reheater, an air-to-air heat exchanger.
- The reheater uses turbine inlet air for cooling.
- The cool air is further cooled by a condenser, another air-to-air heat exchanger.
- The condenser uses turbine outlet air for cooling.
- The turbine outlet air has a sub-zero temperature.
- The condenser cools the air to its dew point, which is approximately 0°C at sea level.
- Condensed water is collected in a water extractor.
- The extracted water is sprayed onto the ram air inlet side of the main heat exchanger.
- After the water extractor, the air passes through the reheater again, increasing its temperature.
- The air then flows to the air cycle machine turbine inlet.
- After leaving the turbine, the air goes through the condenser.
- Finally, the air reaches the cabin.
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Description
This quiz covers the principles and processes involved in high pressure water separation, focusing on how cooled air interacts with moisture. Key stages include the passage of compressed air through various heat exchangers and condensers. Test your understanding of the mechanics behind this essential pneumatic system process.
