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Willis Haviland Carrier developed the world's first modern air conditioner in 1902 as a New York engineer. Carrier's invention provided comfort for homes and allowed controlled conditions for industry and science. The main parts of an air conditioner are a compressor, expansion valve, hot coil, chilled coil, two fans, and a control unit. It works by compressing Freon gas to become hot, running it through coils to cool and condense into a liquid, then expanding it to become cold gas that absorbs heat through coils to cool indoor air. Air conditioners are commonly used in homes, offices, and industries.
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The document discusses the components and working principles of an air conditioning system. It describes the main components as the compressor, condenser, expansion valve, and evaporator. It explains that the compressor works to compress refrigerant from a low temperature gas to a high pressure gas. The condenser receives the high pressure gas and converts it to a liquid by cooling it. The expansion valve regulates the liquid refrigerant and lowers its pressure before it reaches the evaporator. In the evaporator, the refrigerant absorbs heat from the air, cools the air, and evaporates back into a gas. The cycle then repeats through the compressor. While air conditioning is useful, it also has disadvantages, so the document recommends limiting its use
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Condenser
Condensers are heat exchangers that condense refrigerant vapor by rejecting heat to an external medium such as air or water. There are several types of condensers including air-cooled, water-cooled, and evaporative condensers. Air-cooled condensers use air as the external medium and can be natural or forced convection. Water-cooled condensers include tube-in-tube, shell-and-coil, and shell-and-tube designs with water flowing inside tubes or a shell. Evaporative condensers combine features of cooling towers and water-cooled condensers using both air and water to extract heat from the condensing refrigerant.
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Condensers are heat exchangers that condense refrigerant vapor by rejecting heat to an external medium such as air or water. There are several types of condensers including air-cooled, water-cooled, and evaporative condensers. Air-cooled condensers use air as the external medium and can be natural or forced convection. Water-cooled condensers include tube-in-tube, shell-and-coil, and shell-and-tube designs with water flowing inside tubes or a shell. Evaporative condensers combine features of cooling towers and water-cooled condensers using both air and water to extract heat from the condensing refrigerant.
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Air conditioning involves simultaneously controlling the temperature, humidity, cleanliness, and distribution of air. It conditions and transports air to a conditioned space while maintaining predetermined environmental limits for occupant comfort. There are two main types of air conditioning systems: comfort systems that provide a comfortable indoor environment, and process systems that control the environment for manufacturing or other processes. Common comfort applications include commercial buildings, residences, healthcare facilities, and transportation. Process systems are used in textile mills, clean rooms, precision manufacturing, pharmaceutical facilities, and refrigerated storage. Refrigeration methods include non-cyclic techniques using ice or dry ice and cyclic vapor-compression or vapor-absorption refrigeration cycles.
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Cooling towers are heat rejection devices that allow industrial processes to reuse water by cooling it through evaporation. There are several types of cooling towers based on their design and operating principles. The key types are wet cooling towers, which use direct evaporation to cool water below the ambient air temperature, and closed circuit cooling towers, which protect process water from exposure while still enabling evaporative cooling. Cooling towers have evolved from early designs like spray ponds and platform towers to modern configurations that optimize heat transfer, such as those using fill materials to increase surface area between air and water flows.
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Air conditioner txt
- 1. Layout1: Willis Haviland Carrier, 1876-1950, In 1902,A New York engineer, Willis Haviland Carrier developed world's first modern air conditioner. Carrier's invention not only provided comfort at home, but also allowed for the controlled conditions industrial and scientific. Layout2: The main partsof air conditioneris A compressor An expansion valve A hot coil (on the outside) A chilled coil (on the inside) Two fans A control unit Layout3: The compressor compresses cool Freon gas, causing it to become hot, high-pressure Freon gas. This hot gas runs through a set of coils so it can dissipate its heat, and it condenses into a liquid. The Freon liquid runs through an expansion valve, and in the process it evaporates to become cold, low-pressure Freon gas . This cold gas runs through a set of coils that allow the gas to absorb heat and cool down the air inside the building. Layout4: Applications 1. It is mainly used in house hold purpose, offices, industries etc....