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2. Seasonal energy efficiency ratio - Wikipedia

   en.wikipedia.org/wiki/Seasonal_energy_efficiency...

   The SEER rating of a unit is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. The higher the unit's SEER rating the more energy efficient it is. In the U.S., the SEER is the ratio of cooling in British thermal units (BTUs) to the energy consumed in watt-hours.

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. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   [15] 1877 In the period before 1875, heat pumps were for the time being pursued for vapour compression evaporation (open heat pump process) in salt works with their obvious advantages for saving wood and coal. In 1857, Peter von Rittinger was the first to try to implement the idea of vapor compression in a small pilot plant.

5. Buddhist philosophy - Wikipedia

   en.wikipedia.org/wiki/Buddhist_philosophy

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6. Lost literary work - Wikipedia

   en.wikipedia.org/wiki/Lost_literary_work

   Agrippina the Younger (AD 15 – AD 59) Casus suorum (Misfortunes of her Family, a memoir) Pliny the Elder (AD 23/24 – 79) History of the German Wars, some quotations survive in Tacitus's Annals and Germania; Studiosus, a detailed work on rhetoric; Dubii sermonis, in eight books; History of his Times, in thirty-one books, also quoted by Tacitus.