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Air conditioning pollution and "air conditioning syndrome"

2020-03-02 11:22

People who often blow air conditioners are susceptible to air conditioning syndrome. Many modern offices, living rooms, cultural and entertainment venues, and vehicles are equipped with air-conditioning equipment. Although the use of air-conditioning equipment provides people with a good living environment, it also brings many new environmental problems and even harms the human body. Health, "air conditioning syndrome" appears. When using air conditioners, why are there environmental problems and environmental pollution? Firstly, most of the refrigerants for air-conditioning equipment are Freon-11 and Freon-12. Due to the chemical stability of Freon, it does not decompose in the lower atmosphere after volatilizing and escaping into the atmosphere. But when it rises to the stratosphere of the atmosphere, under the irradiation of ultraviolet rays, it will generate a chlorine atom that has a damaging effect on ozone, and this chlorine atom decomposes ozone into oxygen. Each chlorine atom can destroy 10,000 ozone molecules, so the ozone concentration in the stratosphere is greatly reduced. According to statistics, from the production of Freon in the 1930s to 1975, a total of 14.47 million tons of Freon were produced worldwide, and the amount of Freon released into the atmosphere reached 1301 tons, the most important of which were Freon-11 and fluorine. Lyon — 12. At present, the annual output of Freon in the world is 1.8 million tons, which emits about 260,000 tons of Freon-11 and about 420,000 tons of Freon-12 each year. Such a huge amount of Freon is discharged into the atmosphere, which can deplete the ozone layer. As you can imagine, environmental pollution is serious. In addition, there are many types of air-conditioning equipment at present, including integral, split, cabinet and window-type, etc. When using these air conditioners, on the one hand, let the indoor air or the car cool down to reduce the indoor temperature. It also radiates heat into the outdoor atmosphere, forming thermal pollution, which is also one of the culprits causing the city's "heat island effect". In addition, the noise emitted by the air conditioner when it is used also pollutes the environment, disturbs people, and makes people unable to rest. Especially split air conditioners leave comfort to themselves and give noise to others, causing great dissatisfaction. In addition, long-term use of air conditioners, if not used properly, will also cause people to suffer from "air conditioning syndrome". First, the number of negative ions in the air is significantly reduced after repeated filtration of the indoor air. Negative ions in the air are "vitamins" in the atmosphere and are good for human health. The decrease in the number of negative ions affects the cleanliness of the air, affects the normal physiological activities of the human body, causes disorders of human endocrine and autonomic nerves, and causes symptoms such as dizziness, headache, and drowsiness. Therefore, generally closed rooms should be next to the door. Install a negative ion generator as well. Second, the environment in the air conditioner is very suitable for the breeding and reproduction of mold and virogens. Medical scientists have repeatedly isolated the bacteria and other pathogens that cause acute pneumonia from the cooling water of the air conditioning system. Therefore, the filter membrane in the air conditioner should be inspected every month. When it is found to be dirty or germ-producing bacteria and mold, it should be replaced in time to keep the air conditioner clean. The cooling plate in the air conditioner should be clarified with bleach powder every 1 to 2 months. Wash and disinfect once. Thirdly, the air-conditioning system can change the indoor environmental conditions. The indoor and outdoor air temperature and air humidity are very different. When people enter the room from outdoors, the skin capillaries suddenly produce a transient change from expansion to contraction. If you do n’t pay attention to protection, Can cause colds and heat strokes. Therefore, when entering or leaving the air conditioner room in summer, you must wipe off your sweat and change your clothes in time. Due to the closed doors and windows of the air-conditioned rooms, indoor and outdoor air convection is not smooth. Therefore, in air-conditioned rooms, as few pollution sources as possible should be installed. If smoking is prohibited in the room, no electrostatic copier and no Display device with fluorescent screen. In addition, cosmetics, wall decorations, building materials, carpets, plastic products, fiberboards, plywood and books and magazines can all release formaldehyde and other substances into the room, causing headaches, dry skin, burnout and dizziness. Therefore, in the use of air conditioners, you should use less circulating air gears and more indoor and outdoor air exchange gears. When the room is unoccupied or the temperature is appropriate in the morning and evening, open more windows and doors to exchange fresh air. According to the investigation of the theater, every time a show is performed, if the window is not opened to discharge air, an odor will appear or a person catches a cold virus. If possible, artificial ultraviolet rays with a wavelength of about 2700A can be used for sterilization. People who work in closed rooms for a long time should insist on appropriate outdoor activities to self-care and strengthen their physique.
 
Air Pollution in Large Shopping Malls Large shopping malls are heavily polluted due to the large passenger flow. According to the monitoring of the shopping mall environment by the health and environmental departments in some cities, the air in large shopping malls not only contains a large amount of bacteria, but also has a high concentration of suspended particulates and a high carbon dioxide concentration. In large shopping malls, carbon dioxide in the air is three times higher than outdoors. Suspended particulate matter also exceeded the limit, many more than 10 times. According to national public health standards, the airborne bacteria content per cubic meter of shopping malls should be less than 6000. In actual measurement, large shopping malls generally exceed the prescribed standards by several to ten times, and some of them contain 110,000 bacteria, which is standard. 18 times. The noise caused by the flow of people in the mall also exceeds the national standard. The noise intensity of the mall should be controlled within 60 decibels, and the actual measurement has reached more than 80 decibels.



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