Design requirements: ⑴ before the end of the suction inlet jet must average speed v is determined according to the bath temperature: air flow velocity on the suction outlet ⑵ v≤ (2 ~ 3) the amount of exhaust v'⑶ suction outlet should be greater than before the jet suction outlet flow is the end of the jet flow of 1.1 to 1.25 times the height of the air outlet ⑷ generally 0.010 ~ 0.015H Hangzhou, where tin project, in order to prevent clogging of the air outlet occurs, the air outlet height should be greater than 5.0 ~ 7.0mm. Hair Exit flow rate should not exceed 10 ~ 12m / s Hangzhou tin ventilation engineering, in order to avoid level fluctuation. Hangzhou Xingda Ventilation Equipment Co., Ltd. is a production tin ventilation pipes, metal duct processing, tin ventilation pipe installation, sales metal duct ventilation equipment as one of the new company, the company has specialized technical personnel Shaoxing tin ventilation engineering, cutting-edge production and installation of equipment for quality tin ventilation works and lay a solid foundation products include: aluminum outlet, ABS outlet, fire dampers, air flow control valve, muffler HIP me muffler elbow, low noise centrifugal fan, Francis fan, fan coil units, exhaust fan, exhaust fan fire Hangzhou Jiuzhou fan, should reach fans, stainless steel vents, flue check valve, is wild variety of brand fan, no power roof hood, a total of flange plate duct , spiral duct, designed to install plumbing duct piping, HVAC Hangzhou to undertake various projects. Hangzhou tin ventilation engineering company | Hangzhou Xingda ventilation | Xiaoshan District tin Ventilation is provided by Hangzhou Xingda ventilation equipment. Hangzhou Xingda ventilation equipment (www.tz1288.com/shop/index_6525.html) is a leader in Hangzhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Xingda ventilation in leadership with the staff warmly welcome all inquiries negotiations to create a better future Xingda ventilation.