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2. Pellet stove - Wikipedia

   en.wikipedia.org/wiki/Pellet_stove

   Pellet stoves require certified double-walled venting, normally three or four inches in diameter with a stainless steel interior and galvanized exterior. Because pellet stoves have a forced exhaust system, they have the advantage of not always requiring a vertical rise to vent, although a 3-to-5-foot (0.91 to 1.52 m) vertical run to induce some ...

3. B2B e-commerce - Wikipedia

   en.wikipedia.org/wiki/B2B_e-commerce

   B2B e-commerce, short for business-to-business electronic commerce, is the sale of goods or services between businesses via an online sales portal. In general, it is used to improve the efficiency and effectiveness of a company's sales efforts.

4. Pellet fuel - Wikipedia

   en.wikipedia.org/wiki/Pellet_fuel

   There are three general types of pellet heating appliances: free standing pellet stoves, pellet stove inserts and pellet boilers. Pellet stoves work like modern furnaces, where fuel, wood, or other biomass pellets, is stored in a storage bin called a hopper. The hopper can be located on the top of the appliance, the side of it or remotely.

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   mail.aol.com

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6. Heating, ventilation, and air conditioning - Wikipedia

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

   Air-side economizers also use outside air to condition spaces, but do so using fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate. An important component of natural ventilation is air change rate or air changes per hour : the hourly rate of ventilation divided by the volume of the space.

7. Wood-burning stove - Wikipedia

   en.wikipedia.org/wiki/Wood-burning_stove

   Down draft or cross draft gasification stoves, i.e. Dunsley Yorkshire, Welkom 600, Avalon Arbor™ wood stove, XEOOS. [18] Boiler stoves provide hot water as well as space heating. A backboiler can be an optional insert added to the back of the firebox, or a wrap-around water jacket that is an integral to the stove's structure.