German
French
Italian
Portuguese
Japanese
Korrean
Russian
What are the roles of coarse, medium, low, and high-efficiency air filters in a ventilation system?
What are the roles of coarse, medium, low, and high-efficiency air filters in a ventilation system?There are four types of ventilation systems: coarse, medium, low efficiency, and high efficiency.It is installed in a duct according to the airflow. Different numbers of air filters, air filters are partially installed in the centralized air conditioning system and indoor air dust particles are filtered out through the filters. High-quality indoor air is achieved. The 10 functional sections of the assembled air filter unit 1.New return air mixing section: Equipped with new return air or manual closed multi-leaf damper, the new outdoor fresh air, and one return air can be automatically adjusted according to user requirements and then enter the unit. 2.Coarse filter segment: mainly used for the installation of coarse filters (also known as primary filters). The coarse filter (also known as a primary filter) uses non- woven fabric with a thickness of 5-8mm. Flat herringbone structure, coarse filter (also known as a primary filter) initial resistance of 30-5OPa, when the resistance reaches 2-3 times the initial resistance, coarse filter (also known as a primary filter) must be cleaned and reused after washing. 3.surface cooling part: surface cooling part of the form of a copper tube column aluminum plate, aluminum plate using a new double flip side new technology, variable high-pressure oil pump static pressure rising tube, so the aluminum plate and copper tube contact good, for replacement. High thermal efficiency, good strength, and long service life. The outer diameter of the copper tube is φ16mm and the inner diameter is φ14.5mm. the thickness of the aluminum plate: is 0.15-0.2mm and the pitch of the plate is 2.5mm, 2.8mm, and 3.2mm. four rows, six rows, and other forms are available. 4.Heating and humidifying section: equipped with steam and hot water heaters of the same structure as the surface cooler. the number of steam heaters in the copper tube series is one row of two rows and the water heaters are two rows. Four rows of six rows structure. 5.Secondary return air section (exhaust section): with a multi-leaf return air valve with electric or manual closure on the top or side. 6.Fan part: the fan adopts the YDW series, high-efficiency and low-noise forward multi-blade centrifugal fan, which can be used in any combination of units according to the air volume and wind pressure requirements of the WJK series centralized assembly air treatment. The fan controls the number of open fans and stops fans according to different working conditions to meet the design working condition requirements and energy-saving purposes. Fans and motors are equipped with spring-rubber compound shock absorbers under a special steel frame, with a good shock absorption effect. The fan outlet is gently connected and equipped with a gravity valve. In addition, the fan section can be returned to the fan section according to the user's requirements. 7.Middle section: as a transition, buffering the vapor flow and installing and repairing the channels as other functional sections. It is recommended to install the middle section of the muffler section, the medium efficiency filter section, and the watering function. 8.Muffler section: Built-in impedance compound muffler or metal micro-perforated plate muffler, various mufflers can be designed according to the special requirements of users. 9.Medium-effect section: mainly used for the medium-effect filter and bag-type medium-effect filter with non-woven bag structure, or multi-layer folding frame structure, also can be equipped with different efficiency according to user requirements. Effective filter, the initial resistance of the medium-effect filter is 30-50Pa, when the resistance reaches 2-3 times the initial resistance, use the cleaning medium-effect filter, the medium-effect filter can be used repeatedly after cleaning. 10.Wind and wind mixing section: the outlet section has an upper outlet, a horizontal outlet, and a side outlet. There is a multi-leaf valve with electric or manual closure, which can be selected by the user. It is assembled in duct form with flanges at the front and rear for easy connection to the air ducts of the centralized air conditioning system. What are the effects of air filters in ventilation systems? Multiple air filter units are combined in the required air volume and the inspection door is left at the bottom (or side) of the filter section to allow repair of the air filter and replacement of the air filter. The coarse and medium efficiency sections are only suitable for the filtration of fresh air. The sub-high-efficiency filter section has high efficiency and low resistance. The initial resistance at rated air volume is ≤ 90 Pa, the filtration efficiency for dust particles with a particle size of 0.5 μm or more is 95% (counting method), the filtration efficiency for atmospheric bacteria is, and the final resistance is 200 Pa. The high-efficiency filter section also has high efficiency and low resistance. The initial resistance under the rated air volume is ≤ 120 Pa, the efficiency of dust particles above 0.5 μm particle size is 99,95% (counting method), the filtration efficiency of atmospheric bacteria is and the final resistance is 300 Pa.
|
