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2. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of ...

3. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

5. A murder that shook British India and toppled a king - AOL

   www.aol.com/murder-shook-british-india-toppled...

   Rohidas Narayan Dusar, a former police officer, writes in his book on the murder that the investigators were under pressure to go slow, but that then police commissioner Kelly threatened to resign.

6. Denmark ramps up security —and calls in the sled dogs — in ...

   www.aol.com/news/denmark-ramps-security-calls...

   Denmark’s not rolling over. The Nordic nation announced Tuesday that it will bolster Greenland’s defenses with a $1.5 billion in new resources, including two elite sled dog teams, days after ...

7. Manmohan Singh, India's reluctant prime minister, dies aged 92

   www.aol.com/news/manmohan-singh-indias-reluctant...

   NEW DELHI (Reuters) -Described as a "reluctant king" in his first stint as prime minister, the soft-spoken Manmohan Singh, who died on Thursday at the age of 92, was arguably one of India's most ...