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Common Florida Driver License and Identification Card Topics. Apply For a First-Time Florida Identification Card Apply for a First-Time Florida Driver License/Learner. Air conditioning (often referred to as AC, A.C., or A/C) is the process of removing or adding heat from/to a space, thus cooling or heating the space's average.

Air Conditioning.

Air conditioning - Wikipedia. For other uses, see AC. This process is most commonly used to achieve a more comfortable interior environment, typically for humans or animals; however, air conditioning is also used to cool/dehumidify rooms filled with heat- producing electronic devices, such as computer servers, power amplifiers, and even to display and store artwork. Air conditioners often use a fan to distribute the conditioned air to an occupied space such as a building or a car to improve thermal comfort and indoor air quality. Electric refrigerant- based AC units range from small units that can cool a small bedroom, which can be carried by a single adult, to massive units installed on the roof of office towers that can cool an entire building. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used.

Air conditioning systems can also be made based on desiccants (chemicals which remove moisture from the air) and subterraneous pipes that can distribute the heated refrigerant to the ground for cooling. In common usage, though, . In construction, a complete system of heating, ventilation, and air conditioning is referred to as heating, ventilation, and air conditioning (HVAC – as opposed to AC).

The business of harvesting ice during winter and storing for use in summer became popular towards the late 1. The evaporation of water cooled the air blowing through the window. This process also made the air more humid, which can be beneficial in a dry desert climate. In Ancient Rome, water from aqueducts was circulated through the walls of certain houses to cool them. Other techniques in medieval Persia involved the use of cisterns and wind towers to cool buildings during the hot season.

Tang Dynasty (6. 18–9. Cool Hall (Liang Tian) built in the imperial palace, which the Tang Yulin describes as having water- powered fan wheels for air conditioning as well as rising jet streams of water from fountains. During the subsequent Song Dynasty (9.

The introduction of residential air conditioning in the 1. Sun Belt in the United States. Franklin and Hadley confirmed that evaporation of highly volatile liquids (such as alcohol and ether) could be used to drive down the temperature of an object past the freezing point of water. They conducted their experiment with the bulb of a mercury thermometer as their object and with a bellows used to speed up the evaporation. They lowered the temperature of the thermometer bulb down to . Franklin noted that, soon after they passed the freezing point of water 0 .

Franklin concluded: . In 1. 84. 2, Florida physician John Gorrie used compressor technology to create ice, which he used to cool air for his patients in his hospital in Apalachicola, Florida. He hoped to eventually use his ice- making machine to regulate the temperature of buildings. He even envisioned centralized air conditioning that could cool entire cities.

Though his prototype leaked and performed irregularly, Gorrie was granted a patent in 1. Though his process improved the artificial production of ice, his hopes for its success vanished soon afterwards when his chief financial backer died and Gorrie did not get the money he needed to develop the machine.

According to his biographer, Vivian M. Sherlock, he blamed the . Gorrie died impoverished in 1.

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His first commercial ice- making machine followed in 1. This novel system used a compressor to force the refrigeration gas to pass through a condenser, where it cooled down and liquefied. The liquefied gas then circulated through the refrigeration coils and vaporized again, cooling down the surrounding system. The machine produced 3,0. His choice of a cold room system instead of installing a refrigeration system upon the ship itself proved disastrous when the ice was consumed faster than expected. After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company.

While there, he began experimenting with air conditioning as a way to solve an application problem for the Sackett- Wilhelms Lithographing and Publishing Company in Brooklyn, New York. The first air conditioner, designed and built in Buffalo by Carrier, began working on 1. July 1. 90. 2. Carrier used his knowledge of the heating of objects with steam and reversed the process. Instead of sending air through hot coils, he sent it through cold coils (filled with cold water). The air was cooled, and thereby the amount of moisture in the air could be controlled, which in turn made the humidity in the room controllable. The controlled temperature and humidity helped maintain consistent paper dimensions and ink alignment.

Later, Carrier's technology was applied to increase productivity in the workplace, and The Carrier Air Conditioning Company of America was formed to meet rising demand. Over time, air conditioning came to be used to improve comfort in homes and automobiles as well. Residential sales expanded dramatically in the 1. Cramer of Charlotte was exploring ways to add moisture to the air in his textile mill. Cramer coined the term . He combined moisture with ventilation to .

Willis Carrier adopted the term and incorporated it into the name of his company. Pierre Du. Bose (1. Meadowmont, all disguised behind intricate and attractive Georgian- style open moldings. Thomas Midgley, Jr. The name is a trademark name owned by Du. Pont for any chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), or hydrofluorocarbon (HFC) refrigerant.

The refrigerant names include a number indicating the molecular composition (e. R- 1. 1, R- 1. 2, R- 2. R- 1. 34. A). The blend most used in direct- expansion home and building comfort cooling is an HCFC known as chlorodifluoromethane (R- 2. Dichlorodifluoromethane (R- 1.

US until 1. 99. 4, when most designs changed to R- 1. A due to the ozone- depleting potential of R- 1. Ghost Recon 2 Keygen Download Softonic here.

R- 1. 1 and R- 1. US for this type of application, so the only source for air- conditioning repair purposes is the cleaned and purified gas recovered from other air conditioner systems.

Several non- ozone- depleting refrigerants have been developed as alternatives, including R- 4. A. It was first commercially used by Carrier Corp. These include HCFCs (R- 2. U. S. HCFCs, in turn, are supposed to have been in the process of being phased out under the Montreal Protocol and replaced by HFCs such as R- 4. A, which lack chlorine. Moreover, policy and political influence by corporate executives resisted change. The environmental organization Greenpeace solicited a European laboratory to research an alternative ozone- and climate- safe refrigerant in 1.

E. P. A., disparaging the approach as . Notice frost formation. In the refrigeration cycle, heat is transported from a colder location to a hotter area. As heat would naturally flow in the opposite direction, work is required to achieve this.

A refrigerator is an example of such a system, as it transports the heat out of the interior and into its environment. The refrigerant is used as the medium which absorbs and removes heat from the space to be cooled and subsequently ejects that heat elsewhere. Circulating refrigerant vapor enters the compressor, where its pressure and temperature are increased. The hot, compressed refrigerant vapor is now at a temperature and pressure at which it can be condensed and is routed through a condenser. Here it is cooled by air flowing across the condenser coils and condensed into a liquid.

Thus, the circulating refrigerant removes heat from the system and the heat is carried away by the air. The removal of this heat can be greatly augmented by pouring water over the condenser coils, making it much cooler when it hits the expansion valve. The condensed, pressurized, and still usually somewhat hot liquid refrigerant is next routed through an expansion valve (often nothing more than a pinhole in the system's copper tubing) where it undergoes an abrupt reduction in pressure. How To Install Wine On Fedora 16 System on this page.