| 11. | This is corrected by recirculating part of the hot exhaust air to the mill inlet.
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| 12. | The connection must be air tight or moist exhaust air will leak into the attic.
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| 13. | The exhaust air is expelled through the exhaust flue by buoyancy forces resulting from the combustion.
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| 14. | Heated exhaust air was collected by another plenum chamber to be fed to the turbine sections.
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| 15. | Although many vent hoods exhaust air to the outside, some recirculate the air to the kitchen.
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| 16. | This prevents circular airflows where hot exhaust air is recirculated through an adjacent device and causes overheating.
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| 17. | In addition to exhaust air purification systems, that includes processes for utilizing energy recovered from industrial waste heat.
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| 18. | Make sure it exhausts air outdoors.
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| 19. | All exhaust air is dumped to atmosphere via an outflow valve, usually at the rear of the fuselage.
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| 20. | New construction implementing heat exchangers can capture heat from waste water or exhaust air in bathrooms, laundry and kitchens.
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