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In 2006, McQuay was acquired by Daikin Industries, a global manufacturer of both commercial and residential air conditioning equipment based in Osaka, Japan. Daikin had annual sales of $13 billion in 2009. Daikin was named one of the 100 most sustainable corporations for three years in a row by Corporate Knights, Inc., from 2007 through 2009.
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 ...
However, during the CLRV/ALRV streetcar fleet overhaul project between 2011 and 2012 the TTC reconfigured the streetcar horns with new air horns or automobile-type electric horns. [2] CLRV 4041 with roof-mounted air conditioning unit. CLRV 4041 is the only member of the CLRV/ALRV fleet to have an air conditioning unit, which the TTC installed ...
The total cost, including road and equipment expenditures, of the Market Street subway and elevated was $23,072,114 (equivalent to about $782,401,000 in 2023). [ 10 ] The first operating section of the Frankford Elevated was planned to extend from Arch Street (connection with PTC Market Street line) to Bridge Street, 6.4 miles (10.3 km).
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.
R-12, the first automotive air conditioning refrigerant, was invented in 1928 by a team of scientists put together by Thomas Midgley, Jr. The team of scientists set out to create refrigerants which led to the invention of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). From these two inventions, two refrigerants were created, R ...
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