Matters needing attention in the purification of local 100-level equipment

Matters needing attention in the purification of local 100-level equipment

(1) The air supply surface must be larger than the work area, and each side should be 3 - 35 cm larger, and the Zui is not less than 20 cm. This is because the incoming air stream has a boundary layer.

(2) If the local area is small, in order to ensure sufficient wind speed on the working surface, the air outlet speed should be increased.

(3) In order to ensure the cross-section wind speed and cleanliness of the work area, the purification project can install a rigid or flexible barrier wall or curtain of appropriate length under the laminar flow hood or the local 100-level air supply surface, but not as mentioned above. Drop to the ground. The purpose is to allow the downward unidirectional flow to continue to the working surface, as the result of this is equal to widening the air supply opening or shortening the distance from the air supply opening to the working area.

(4) Purification project Since the fan used is located in the ceiling, the heat dissipation of the fan and the motor will affect the indoor temperature. This is often neglected by the designer when purifying the project, especially when using multiple small fans. The unfavorable situation of zui is that the motor is also in the airflow, and the heat dissipation can be calculated directly from the motor power.