Central air conditioning, air-purifying technology used broadly divided into the following categories, they have their own strengths, and with advances in technology continue to improve. 5. Electrostatic purifier advantages: high voltage electrostatic precipitator tungsten continuous release static electricity, so with the air in the dust and bacteria are put positive charge offer central air disinfection device, is then attracted negative electrode plate. You can filter smaller than cell dust, smoke. Comprehensive respiratory protection, and greatly reduce the risk of cancer. Easy to use, two weeks after use, it can clean dust, reduce secondary pollution. Do not replace the high cost of consumables and can be static sterilization. Electrostatic tungsten high-voltage electrostatic release, instant kill bacteria, viruses central air disinfection device prices, the elimination of colds and the prevention of infectious diseases more effective. Disadvantages: If ozone release control is not good, easy to harm the human body. In addition, the electrode plates require periodic manual cleaning. To sum up, taking into account the subway car by ventilation standards, air volume inside the car can not be less than 8000 m3 / h, fresh air is not less than 2600 m3 / hour; in terms of purification efficiency or system maintenance, electrostatic dust Technology has a very clear technical advantages, but also from the economic performance analysis central air disinfection device, also has obvious advantages. It will make use of the air conditioning system greatly reduces energy loss itself, is very suitable for a large amount of dust, air-conditioned subway car air purifiers and dust. DW-environment central air electrostatic air cleaning device features: 1 high dust holding capacity, long cleaning cycle; 2 energy efficient, drag unchanged, the wind changed; 3 efficient sterilization, in line with the Ministry of Health standards; 4. Long life central air disinfection device companies, low life-cycle cost; 5 resistance to dust generated is small, long cleaning cycle; 6. itself power consumption of about 10 ~ 15W, drag ≤20Pa, ensure the basic ventilation air conditioning system unchanged; 7. security in line with national standards and EU standards; 8-voltage power supply of harassment, harassment power radiated disturbance field strength (EMC) are in line with national standards. Electrostatic purification technology mainly flat electrical wire and honeycomb-type forms.