Hypersonic hair dryer Factory.Precautions for hair dryers in pipeline design

　　The center angle of the diffuser and reducer should preferably be between 8-15o.

　　2. The straight pipe resistance and branch pipe resistance of the tee should be calculated separately.

　　3. Try to reduce the flow rate of the air outlet as much as possible.

　　Calculation of local resistance of hair dryer:

　　Z= ξν two ρ/ two

　　ξ———— Local resistance coefficient.

　　Local resistance accounts for a large proportion in ventilation and air conditioning systems, and attention should be paid during design. In order to reduce local resistance, the following measures are usually adopted:

　　1. Elbow

　　When arranging pipelines, straight lines should be taken as much as possible to reduce bends. The curvature radius of a circular air duct elbow should generally be greater than (1-2) times the pipe diameter; The larger the aspect ratio of the rectangular air duct elbow section, the smaller the resistance; A rectangular right angle elbow should have a flow guide in it.

　　2. Tee

　　The collision of two streams of air with different flow velocities when converging within the tee, as well as the vortex formed when the airflow speed changes, are the reasons for local resistance. In order to reduce the local resistance of the tee, attention should be paid to the connection between the branch pipe and the main pipe to reduce their included angle; Efforts should also be made to maintain equal flow rates in the branch and main pipes

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