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2. Passive ventilation - Wikipedia

   en.wikipedia.org/wiki/Passive_ventilation

   A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.

3. Attic fan - Wikipedia

   en.wikipedia.org/wiki/Attic_fan

   An attic fan installed underneath a roof A powered attic ventilator , or attic fan , is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used.

4. Proton Saga (third generation) - Wikipedia

   en.wikipedia.org/wiki/Proton_Saga_(third_generation)

   The Standard is equipped with 13-inch steel rims and hubcaps carried over from the second generation Saga. [9] Both Executive and Premium variants feature new alloy wheels. Proton has fitted their 14-inch 'snowflake' Y-spoke rims on the Executive, and 15-inch 'turbine' split-spoke rims on the Premium. [9]

5. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems .

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Components of jet engines - Wikipedia

   en.wikipedia.org/wiki/Components_of_jet_engines

   In a free turbine the turbine driving the compressor rotates independently of that which powers the propeller or helicopter rotor. Cooling air, bled from the compressor, may be used to cool the turbine blades, vanes and discs to allow higher turbine entry gas temperatures for the same turbine material temperatures.**