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2. Fireplace insert - Wikipedia

   en.wikipedia.org/wiki/Fireplace_insert

   The fireplace insert was invented in 1742 by Benjamin Franklin, which he called 'The Pennsylvania Fireplace' (also known as the Franklin Stove), in the United States.He came upon the idea as a means of using coke (a smokeless fuel made by the destructive distillation of certain types of coal) and incorporated the use of an electric blower to improve efficiency.

3. Innovative Hearth Products - Wikipedia

   en.wikipedia.org/wiki/Innovative_Hearth_Products

   Their product lines include gas, electric, and wood fireplaces for both indoor and outdoor settings. [4] They also produce additional products and accessories such as fireplace inserts, free-standing stoves, gas log sets, and venting products. [5]

4. Infrared heater - Wikipedia

   en.wikipedia.org/wiki/Infrared_heater

   Infrared heaters can be operated in vacuum or atmosphere. One classification of infrared heaters is by the wavelength bands of infrared emission. Short wave or near infrared for the range from 750 nm to 1.4 μm; these emitters are also named "bright" because still some visible light is emitted; Medium infrared for the range between 1.4 μm and ...

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Trombe wall - Wikipedia

   en.wikipedia.org/wiki/Trombe_wall

   The first design strategy to increase the effectiveness of Trombe Walls is painting the outside surface of the wall to black (or a dark color) for the best possible absorption of sunlight. Moreover, a selective coating to a Trombe wall improves its performance by reducing the amount of infrared energy radiated back through the glass.

7. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel). Tiny ones used in computers are sometimes called biscuit blowers. These fans move air from the rotating inlet of the ...