Some ventilation equipment, fire dampers Wuhan good, such as centrifugal fan and so on, when you start the best no-load start, because this motor starting current minimum, Wuhan damper, safety benefit. This requires the system piping before starting off. Import and export with a switch when the fan is generally closed to the import or export, such as import and export without switch, Wuhan damper Which is good, it must be controlled by the valve means. Engineering Computing 1, the number of first computing drawing fan and computing equipment racks quantities. 2, according to the calculation rules for calculating the amount of ventilation pipeline projects. (If it is galvanized metal duct stents do not need extra quantities, quotas have been included.) 3. Calculate the exhaust outlet, fire dampers, exhaust valves, pressure outlet of quantities. 4, computing damper, smoke valve stent quantities. 5, pay attention to the positive pressure within the corridor outlet and a roof exhaust fan quantities not omission. 6, calculate various duct and fan, hose connection at the fire dampers canvas quantities. 7. "system debugging" of engineering calculation, such as pressure delivery outlet, smoke fire damper commissioning. 8, the last more than a few will be summarized on. Wuhan damper company, Wuhan Han Wei Li Yuen (online consultation), the damper is provided by Wuhan Han Wei Wuhan Liyuan heating Equipment Co., Ltd. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen better future.