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2. Chlorodifluoromethane - Wikipedia

   en.wikipedia.org/wiki/Chlorodifluoromethane

   Worldwide production of R-22 in 2008 was about 800 Gg per year, up from about 450 Gg per year in 1998, with most production in developing countries. [2] R-22 use is being phased out in developing countries, where it is largely used for air conditioning applications.

3. Run-around coil - Wikipedia

   en.wikipedia.org/wiki/Run-around_coil

   A run-around coil installation, serving air handling units on the roof of an office building. A run-around coil is a type of energy recovery heat exchanger most often positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, to recover the heat energy. Generally, it refers ...

4. Heating, ventilation, and air conditioning - Wikipedia

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

   A drawback is the installation cost, which can be slightly higher than traditional HVAC systems. Energy efficiency can be improved even more in central heating systems by introducing zoned heating. This allows a more granular application of heat, similar to non-central heating systems. Zones are controlled by multiple thermostats.

5. The Property Brothers Fear Trump's Tariffs Could Send ... - AOL

   www.aol.com/property-brothers-fear-trumps...

   They have a $2.8 billion home goods brand empire but, as TV hosts, they also have the added benefit of not simply relying on selling products to pay the bills. “We’ve made money in every kind ...

6. 12 Vintage Christmas Blow Molds Worth Serious Cash

   www.aol.com/12-vintage-christmas-blow-molds...

   Price on Etsy: $1,650 While most blow molds are 100% plastic, this Santa face from the ’50s embedded in a wood frame is the only plastic piece classifying this decoration as a blow mold.

7. Maine Coon Cat Can't Escape Pet Bunny Who Wants To Be BFFs ...

   www.aol.com/maine-coon-cat-cant-escape-190126522...

   Where to shop today's best deals: Kate Spade, Amazon, Walmart and more

8. Lang factor - Wikipedia

   en.wikipedia.org/wiki/Lang_factor

   It is widely used in industrial engineering to calculate the capital and operating costs of a plant. [1] [2] [3] The factors were introduced by H. J. Lang and Dr Micheal Bird in Chemical Engineering magazine in 1947 as a method for estimating the total installation cost for plants and equipment.

9. College football games today: How to watch, stream Saturday's ...

   www.aol.com/sports/college-football-games-today...

   With CFP positioning on the line in many of these games, here is how to watch all of the action today that will shape the playoff.