[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - the ventilation pipe work product protection 1], installing duct to ensure that the surface is smooth and clean, outdoor air duct should be rain, snow measures. 2, when inserted into the duct structure duct refrigeration room project, which should be installed on the end of the steel mesh to prevent system operation, debris into the metal duct. Metal duct and structural duct sealing gap should close. 3, when the duct through the settlement joint design requirements should be additional Casing with duct gap filler (soft) blocking tight. 4, transportation and installation of stainless steel, aluminum duct, should avoid scratching the surface of the phenomenon, the installation to minimize contact with the iron items. 5. Transportation and installation of the valve member when the plant cooling project should be avoided due to the collision to produce surface and leaf deformation. Open dumps should be rain, snow measures. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - decontamination] cleanroom air velocity airflow rate provisions discussed here refers to the clean indoor air velocity, air flow rate of clean space in then explained when discussing the specific equipment. For turbulent flow clean room because the main mainly by dilution to reduce the degree of indoor air pollution, so the main use of the concept of ventilation ACH pipeline project without the direct use of the concept of speed, but the speed of the indoor air has the following requirements; (1) outlet outlet flow rate should not be too large, air-conditioned rooms and simple compared to the project, requiring speed decay faster and greater diffusion angle. (2) the level of blowing air speed (for example, when sending side reflux rate) should not be too large, in order to avoid blowing the return airstream surface particles, causing further pollution, this is generally not a big speed 0.2m / s. Refrigeration room works _ Tianjin Jinzhong Ji decontamination company (certified) _ Beijing project is provided by the Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.