The type of air duct and how to divide the level of the air duct

1. Permeable airflow out of the wind mold 100 type. It is mostly used in cold storage, fruit refrigeration workshop, electronic workshop and other places.

2. Mesh strip airflow mode. It is mostly used in swimming pools and other places with anti-condensation design.

3. Exhaust air outlet mode. It is mostly used in places with large air volume, small space and high number of air changes, such as greenhouses.

4. Porous air outflow mode. It is mostly used in shopping malls and supermarkets, workshop production specialists, food workshops, logistics and warehousing, etc.

5. The outflow of macroporous air belongs to the wind mode. It is mostly used for air supply in workshop posts.

6. Jet airflow and air outlet mode. It is mostly used in tall production workshops and other places.

Explanation of wind grill pipe refers to a wind instrument. Northern Zhou Yu Xin's poem "Entering the Taoist Clan's Leather Pavilion": "The cloud robe is a white crane, and the wind pipe is blown by the phoenix."

Old Tang Dynasty Book ** Zhi III": "The wind pipe is in the morning, and the cloud song is dawning." The word decomposition of the wind is the phenomenon of wind (wind) ē air flow.

Meteorology specifically refers to the flow of air in the horizontal direction: the direction of the wind. Wind velocity.

Wind level. Risk. Turmoil (metaphor for disputes or chaos).

Stormy (a refers to the constant wind and rain, the sky is dark, giving people a feeling of heavy pressure; b metaphor * or difficult situation). Wind Flower Explanation of Snow Moon Pipe Guan ǎ Instrument for blowing: Wind instrument.

Orchestra. Round, elongated, hollow thing : pipes.

Pipeline. Guan Jian (humility, shallow insight). Tube peeping (looking at Tianchun Suiwei from the bamboo pipe, measuring the seawater with a scoop, metaphor narrow vision, short-sightedness).

Not seeing the big picture. Trachea. Blood vessels.

Needle. A two-pronged approach. Shape.

The level of air duct is divided into dynamic pressure, static pressure, and full pressure.

Duct is a duct system used for air transport and distribution. There are two kinds of composite air ducts and inorganic air ducts. Composite air ducts are represented by durkduct air ducts. It can be sorted by cross-sectional shape and material.

Air duct productionStainless steel air duct production is to coat sealant (such as neutral glass glue) at the gaps such as bite seams, rivet seams, flange flanging, and four corners. Dust and oil should be removed from the surface before applying sealant. According to the cross-sectional shape, the air duct can be divided into circular air duct, rectangular air duct, flat air duct and other kinds, among which the circular air duct has the least resistance but the largest height size, and the production is complex.

Therefore, the application is mainly rectangular duct. According to the material, the air duct can be divided into metal air duct, composite air duct, and polymer air duct.

As shown in the figure below, the parameter table of various models of EP series is displayed.

Note: 1. The rated air volume of the low static pressure unit is the value when the external residual pressure is 0pa, and the residual pressure value without tuyere and filter is 12pa.

2. Parameters of cooling conditions: inlet air dry bulb temperature 27, wet bulb temperature, inlet water temperature 7, water temperature difference 5.

3. Heating working conditions: inlet air dry bulb temperature 21, inlet water temperature 60, hot water flow with cooling conditions.

The performance parameters in the above ** are subject to change without notice.

According to the structural form, the <> fan coil unit can be divided into: vertical, horizontal, wall-mounted, card, etc., and the vertical type is divided into column type and low type; According to the installation method, it can be divided into surface installation and concealed installation; According to the direction of the water intake, it is divided into left type and right type.

The wall-mounted fan coil unit is all surface-mounted units, which have a compact structure and good appearance, and are directly hung above the wall. Cassette (ceiling embedded) unit, the more beautiful inlet and outlet are exposed under the roof, and the fan, motor and coil are placed on the roof, which belongs to the semi-surfaced unit.

The surface-mounted units all have beautiful enclosures, with their own air inlets and outlets, which are installed in the room. The shell of the concealed unit is generally made of galvanized steel sheet. The national standard "Fan Coil Unit Unit" (GB T19232-2003) stipulates that fan coil unit units are divided into two categories according to the static pressure outside the machine

Low static pressure type and high static pressure type.

The outlet static pressure of the low-static pressure type unit is 0 or 12Pa at the rated air volume, and the outlet static pressure is 0 for the unit with air outlet and filter; For units without tuyere and filter, the outlet static pressure macro balance is 12pa; The outlet static pressure of the high static pressure unit at the rated air volume is not less than 30pa.

Air conditioning ducts can be classified according to different aspects such as material, shed shape, use, etc., and the common classifications are as follows:1Material Classification:

Metal air ducts, plastic air ducts, composite air ducts, etc. 2.Shape classification:

Round air ducts, rectangular air ducts, oval air ducts, flat air ducts, etc. 3.Classification of uses:

Ventilation ducts, air conditioning ducts, smoke exhaust ducts, sound insulation ducts, etc. 4.Systematic classification:

Fresh air system air duct, Zhenxian return air duct, mixed system air duct, etc. 5.Installation method classification:

Hoisting ducts, wall-mounted ducts, ground-mounted ducts, etc. 6.Cylinder classification:

Single-tube air duct, double-tube air duct, multi-tube air duct, etc. 7.Cylindrical shell classification:

Ordinary cylindrical shell air duct, thermal insulation cylindrical shell air duct, fireproof cylindrical shell air duct, etc.

Air conditioning ducts can be classified according to material, shape, and use, etc.:

1. According toMaterialClassification: Common galvanized sheet air ducts, stainless steel air ducts, plastic air ducts, FRP air ducts, etc.

2. According toShape. Classification: Common rectangular air ducts, round air ducts, oval air ducts, flat oval air ducts, etc.

3. According toUses:Classification: The common ones are the residual air duct, return air duct, exhaust duct, fresh air duct, etc.

4. According toInstallation:The air duct can also be divided into hoisting, buried, concealed, etc.

Different types of air ducts will have different effects in the application.

The air conditioning air duct is divided into common plate flange air duct and angle steel air conditioning air duct, which is used by the air conditioner to use the cold and heat generated by the host to concentrate the return air (or the mixture of return air and fresh air) from the room for air treatment, such as cooling, heating, humidification, dehumidification, purification, etc., and then send it to the indoor channel.

The details are as follows: 1. Common plate flange air duct.

The common plate flange duct, also known as the flange duct, is made in a faster, more convenient and smaller air leakage rate than the traditional rectangular duct. Its advantages are to save materials, reduce engineering investment, reduce air leakage, reduce energy consumption, and save operating costs. The automatic production line of common plate flange air duct, the stainless steel closed-draft, galvanized plate air duct produced by the production line can be plugged or directly pressed by angle steel, or the air duct and flange common plate can be integrated forming.

2. Angle steel air conditioner air call selling pipe.

Angle steel air conditioning duct, also commonly known as angle iron air conditioning air duct, is the two sides of the vertical angle of the long steel welded into the flange frame with rivets embedded on the air duct, firm, with the state of the large air duct and high-pressure system, is the earliest form of air duct connection.

Air conditioning air ducts are classified according to the quality of cherry blossoms, mainly galvanized steel plate air ducts, stainless steel air ducts, aluminum foil compound grip late closing glass fiber air ducts, polyurethane composite board air ducts, etc.; According to the classification of shape, there are mainly rectangular air ducts, circular air ducts, semi-circular air ducts, oval air ducts, etc.; According to the classification of use, there are mainly ordinary air supply air ducts, silocated air supply air ducts, insulation air ducts, etc. However, there are many more classifications of air ducts, and the specific needs to be determined according to the actual use.