The importance of central air conditioning water system cleaning
In the normal working process of central air-conditioning, metal corrosion products such as scale, algae, biological slime, rust, etc. will appear in the water system. These substances are constantly accumulated in the condenser, heat exchanger, the inside of the fan coil and the pipeline to form the pipeline The flux becomes smaller, which affects the heat exchange effect, and because of the low thermal conductivity of the dirt, when the dirt deposits cover the heat exchange surface of the heat exchanger, the cooling heat exchange efficiency will be greatly reduced, causing the condenser pressure to increase and the cooling effect to decrease , Power consumption has risen sharply. Dirt also accelerates corrosion and shortens the life of the central air-conditioning unit. Therefore, from the perspective of saving power and extending the service life of central air-conditioning units, central air-conditioning cleaning is a move that benefits the country.
The central air conditioner often has scaling, rust, decreased cooling effect, increased power consumption, and even high-pressure tripping in severe cases. After thorough cleaning, the central air conditioner's cooling effect has been significantly improved, saving the working time of the compressor , The unit saves 10-30% of electricity consumption and extends the service life. For example, in a room, before the central air conditioner is cleaned, it takes ten minutes to drop to the set temperature; after the central air conditioner is cleaned, it takes only seven minutes to drop to the set temperature, the compressor can work three minutes less, and then save electricity by 30%. The current situation in China is that many central air conditioners have poor refrigeration performance, which leads to extended tightening time and waste of electricity. After central air conditioners are cleaned, the air conditioners can restore normal cooling effects, shorten the tightening time, and save electricity by 10-30%.
One millimeter of scale will reduce the cooling capacity of the central air-conditioning unit by 20%-40%. At the same time, it will increase the pressure of the condenser, which will increase the motor load and consume 20-30% more electricity. If the unit capacity is 1 million kcal, the energy efficiency ratio of the equipment is 3.2kw/10 thousand kcal, the average load is 80%, and a total of 5,000 hours of work for 10 months a year will require more power consumption in a year: 100×80%×3.2 ×5000×(10-30)%=12.8-38.4 million kilowatt-hours, based on 0.8 yuan per kilowatt-hour of electricity, the annual waste of electricity is 10.24-30.72 million yuan (the waste of lithium bromide units is fuel costs). This waste is immeasurable and intangible.
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