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Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [ 2][ 3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [ 4] Heat pumps are similar in many ways to air conditioners ...
A residential garage ( UK: / ˈɡærɑːʒ, - rɑːdʒ, - rɪdʒ / GARR-ahzh, -ahj, -ij, US: / ɡəˈrɑːʒ, - rɑːdʒ / gə-RAHZH, -RAHJ) is a walled, roofed structure with a door for storing a vehicle or vehicles that may be part of or attached to a home ("attached garage"), or a separate outbuilding or shed ("detached garage").
Since the office was established in 1789, 45 men have served in 46 presidencies. The first president, George Washington, won a unanimous vote of the Electoral College. [ 4] Grover Cleveland served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the ...
The energy efficiency ratio (EER) of a particular cooling device is the ratio of output cooling energy (in BTUs) to input electrical energy (in watt-hours) at a given operating point. EER is generally calculated using a 95 °F (35 °C) outside temperature and an inside (actually return-air) temperature of 80 °F (27 °C) and 50% relative humidity.
The same coinage act also set the value of an eagle at 10 dollars, and the dollar at 1 ⁄ 10 eagle. It called for silver coins in denominations of 1, 1 ⁄ 2, 1 ⁄ 4, 1 ⁄ 10, and 1 ⁄ 20 dollar, as well as gold coins in denominations of 1, 1 ⁄ 2 and 1 ⁄ 4 eagle. The value of gold or silver contained in the dollar was then converted ...
Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.
The 20 sen coin (二十銭銀貨) was a Japanese coin worth one fifth of a Japanese yen, as 100 sen equalled 1 yen. [1] These coins were all minted in silver during the Meiji era from 1870 to 1911. [ 2 ] [ 3 ]
The quarter, formally known as the quarter dollar, is a denomination of currency in the United States valued at 25 cents, representing one-quarter of a dollar. Adorning its obverse is the profile of George Washington, while its reverse design has undergone frequent changes since 1998. Since its initial production in 1796, the quarter dollar has ...