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Variable refrigerant flow ( VRF ), also known as variable refrigerant volume ( VRV ), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [ 1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller -based systems.
Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning. Carrier invented the first electrical air conditioning unit in 1902. In 1915, he founded Carrier Corporation, a company specializing in the manufacture and distribution of heating, ventilation, and air ...
Ice storage air conditioning. Illustration of an ice storage air conditioning unit in production. Ice storage air conditioning is the process of using ice for thermal energy storage. The process can reduce energy used for cooling during times of peak electrical demand. [1] Alternative power sources such as solar can also use the technology to ...
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 ...
Free cooling. Free cooling is an economical method of using low external air temperatures to assist in chilling water, which can then be used for industrial processes, or air conditioning systems. The chilled water can either be used immediately or be stored for the short- or long-term. When outdoor temperatures are lower relative to indoor ...
GE Window Air Conditioner Unit $164.00 at Amazon. GE Window Air Conditioner Unit $139.99 at Best Buy. GE Window Air Conditioner Unit $159.00 at Home Depot. Insignia 300 Sq. Ft. Portable Air ...
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 ...
The National Association of EMS Officials recommends "Cool First, Transport Second" for patients whose body temperature is over 104 degrees. This protocol can save overheating patients. Few states ...
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