The cylindrical hood is suitable for natural ventilation systems and not for mechanical ventilation systems. The local resistance coefficient of the cylindrical wind cap used for exhaust is Zeta=1.2 when there is wind and Zeta=0.61 when there is no wind.
Tube shaped wind caps are divided into round umbrella shaped wind caps, conical wind caps, tube shaped wind caps, and spherical shaped wind caps.
1. Round umbrella shaped hood
The round umbrella shaped hood is suitable for general mechanical ventilation systems.
The local resistance coefficient of the circular umbrella shaped hood used for exhaust is Zeta=0.75.
Our factory produces two types of round umbrella shaped wind caps: fiberglass and steel, which meet the specifications of T609.
2. Cone-shaped hood
The conical hood is suitable for dust removal systems and non corrosive toxic systems. Fiberglass conical wind caps can be used in corrosive and toxic systems.
The local resistance coefficient of the conical hood used for exhaust is Zeta=1.6.
Our factory produces two types of conical wind caps: fiberglass and steel, which meet the specifications of T610.
3. Cylindrical hood
The cylindrical hood is suitable for natural ventilation systems and not for mechanical ventilation systems.
The local resistance coefficient of the cylindrical wind cap used for exhaust is Zeta=1.2 when there is wind and Zeta=0.61 when there is no wind.
Our factory produces two types of cylindrical wind caps: fiberglass and steel, which meet the specifications of T611.
4. Spherical shaped hood
Spherical hood is suitable for natural ventilation systems, with a spherical shape that is aesthetically pleasing and sturdy.
The local resistance coefficient of a spherical wind cap used for exhaust is 0.97 when there is wind and 0.58 when there is no wind.
The spherical wind caps produced by our factory are made of fiberglass and have a colored adhesive coating on the surface. They are non corrosive, have a long lifespan, and are aesthetically pleasing. They can be made in various colors according to user requirements.