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2. Auto-defrost - Wikipedia

   en.wikipedia.org/wiki/Auto-defrost

   Inside the freezer, air is circulated by means of one or more fans. In a typical design cold air from the freezer compartment is ducted to the fresh food compartment and circulated back into the freezer compartment. Air circulation helps sublimate any ice or frost that may form on frozen items in the freezer compartment. While defrosting, this ...

3. Stack effect - Wikipedia

   en.wikipedia.org/wiki/Stack_effect

   The stack effect in industrial flue gas stacks is similar to that in buildings, except that it involves hot flue gases having large temperature differences with the ambient outside air. Furthermore, an industrial flue gas stack typically provides little obstruction for the flue gas along its length and is, in fact, normally optimized to enhance ...

4. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space. The control circuit in a household HVAC installation.

5. Gibson Appliance - Wikipedia

   en.wikipedia.org/wiki/Gibson_Appliance

   The company claims to have innovated the refrigerator light, the upright freezer, and the "Air Sweep" mechanism for distributing conditioned air. In 1956, Hupp Corporation acquired Gibson. [ 2 ] In 1967 Hupp merged with White Consolidated Industries (WCI), which created the White-Westinghouse brand in 1975. [ 3 ]

6. Man abandons haircut to help officer under attack - AOL

   www.aol.com/man-abandons-haircut-help-officer...

   A man having his hair cut leapt out of the barber's chair and ran to help a police officer who was being wrestled to the ground in a headlock.

7. US says Russia escalated Ukraine conflict by deploying North ...

   www.aol.com/news/us-says-russia-escalated...

   25 hostess gifts from Walmart are way better than a bottle of wine

8. What to watch: Week 13 college football viewing guide

   www.aol.com/sports/watch-week-13-college...

   No. 16 Colorado at Kansas. Time: 3:30 p.m. | TV: Fox | Line: Colorado -3 | Total: 59.5 The Buffaloes carry a four-game win streak into Arrowhead Stadium to face a team that just ruined BYU’s ...

9. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   The furnace, built on the outside of the workshop, featured earthen pipe-like air vents with hundreds of tiny holes in them and a prototype chimney to ensure air goes into the furnace to feed the fire and smoke comes out safely. [39] Passive ventilation and passive cooling systems were widely written about around the Mediterranean by Classical ...