Uses of Compressed Air
– Pneumatics for various applications
– Pneumatic post for transporting goods
– Power tools and automation
– Atomizing paint
– Operating air cylinders
– Breathing air for divers, firefighters, and industrial workers
– Use in pressurized enclosures to prevent water entry
– Special breathing mixes for deep diving
Design and Maintenance of Compressed Air Systems
– Ventilation and waste heat removal in compressor rooms
– Moisture removal and prevention of water accumulation
– Proper piping size and slope to avoid energy loss and turbulence
– Cooling and condensing water in aftercoolers and storage tanks
– Drain valves and proper tapping to prevent moisture entry
– Air compressors, cabin pressurization, and compressed air dryers
Dangers and Safety Measures of Compressed Air
– Potential injuries and damage caused by high-pressure air
– Harmful effects of oil and contaminants in compressed air
– Fire hazards due to inadequate ventilation
– Explosion risks when mixed with flammable substances
– Regular inspection, maintenance, and training for safe use
– Lockout/tagout procedures to prevent accidents
– Monitoring and controlling air quality
Energy Efficiency in Compressed Air Systems
– Identifying and fixing air leaks to reduce energy waste
– Using energy-efficient compressors and equipment
– Optimizing system pressure for energy consumption
– Demand-based control strategies for matching supply with demand
– Regular energy audits for improvement opportunities
Environmental Impact of Compressed Air
– Greenhouse gas emissions from compressed air systems
– Energy-intensive production and transportation of equipment
– Disposal and recycling of system components
– Noise pollution from compressors and related equipment
– Water contamination from condensation in systems Source: https://en.wikipedia.org/wiki/Compressed_air
Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air is an important medium for transfer of energy in industrial processes, and is used for power tools such as air hammers, drills, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer and more efficient to operate. Compressed air brakes are also found on large highway vehicles.
Compressed air is used as a breathing gas by underwater divers. It may be carried by the diver in a high pressure diving cylinder, or supplied from the surface at lower pressure through an air line or diver's umbilical. Similar arrangements are used in breathing apparatus used by firefighters, mine rescue workers and industrial workers in hazardous atmospheres.
In Europe, 10 percent of all industrial electricity consumption is to produce compressed air—amounting to 80 terawatt hours consumption per year.
Industrial use of piped compressed air for power transmission was developed in the mid 19th century; unlike steam, compressed air could be piped for long distances without losing pressure due to condensation. An early major application of compressed air was in the drilling of the Mont Cenis Tunnel in Italy and France in 1861, where a 600 kPa (87 psi) compressed air plant provided power to pneumatic drills, increasing productivity greatly over previous manual drilling methods. Compressed air drills were applied at mines in the United States in the 1870s. George Westinghouse invented air brakes for trains starting in 1869; these brakes considerably improved the safety of rail operations. In the 19th century, Paris had a system of pipes installed for municipal distribution of compressed air to power machines and to operate generators for lighting. Early air compressors were steam-driven, but in certain locations a trompe could directly obtain compressed air from the force of falling water.
