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2. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   Central heating systems: These systems produce heat in one central location and distribute it throughout the building. This category includes furnaces, boilers, and heat pumps. [1] [2] Distributed heating systems: These systems generate heat in the space they are to heat, without extensive duct systems. Examples include electric space heaters ...

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   A steam heating system takes advantage of the high latent heat which is given off when steam condenses to liquid water. In a steam heating system, each room is equipped with a radiator which is connected to a source of low-pressure steam (a boiler). Steam entering the radiator condenses and gives up its latent heat, returning to liquid water.

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Air handling unit, used for heating, cooling, and filtering the air. Air cleaning and filtration removes particles, contaminants, vapors and gases from the air. The filtered and cleaned air then is used in heating, ventilation, and air conditioning. Air cleaning and filtration should be taken in account when protecting our building environments ...

5. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   Air convection heating systems have been in use for over a century. Older systems rely on a passive air circulation system where the greater density of cooler air causes it to sink into the furnace area below, through air return registers in the floor, and the lesser density of warmed air causes it to rise in the ductwork; the two forces acting ...

6. Packers CB Jaire Alexander has surgery on right knee, will ...

   www.aol.com/sports/packers-cb-jaire-alexander...

   Green Bay Packers cornerback Jaire Alexander underwent surgery on his injured right knee and will miss the rest of the season, head coach Matt LaFleur announced on Wednesday. The Packers still ...

7. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

8. Rickelton smashes double ton as South Africa cruises to 429-5 ...

   www.aol.com/rickelton-smashes-double-ton-south...

   Ryan Rickelton smashed his maiden double hundred and Kyle Verreynne made an aggressive half-century as World Test Championship finalist South Africa cruised to 429-5 on Day 2 of the second and ...

9. Luigi Mangione disappeared, then re-emerged as a murder ... - AOL

   www.aol.com/disappearance-luigi-mangione-emerged...

   Months before United Healthcare CEO Brian Thompson's death, suspect Luigi Mangione disappeared, and loved ones desperately tried to reach him.