Hangzhou Xingda ventilation equipment to undertake all types of tin ventilation engineering, ventilation engineering tin Hangzhou, Shaoxing tin ventilation engineering, fume purification project in Hangzhou, Hangzhou, engineering, installation and design of ventilation, fire smoke hotel kitchen project, Hangzhou, central air-conditioning duct installation and other train service. The company has experienced professional and technical personnel, specialized in various industrial and mining enterprises, hotels ventilation pipe installation, ventilation ducts schools, hospitals and other ventilation and exhaust gas treatment, waste dust collection of design and installation. Open 280 ℃ smoke dampers and smoke exhaust fan will be in charge of the smoke, air handling units continue to operate (water valve closed), mechanical makeup air. When the flue gas temperature reaches 280 ℃, located at 280 ℃ exhaust dampers automatically turn off the main pipe on the outdoor fume purification, while close linkage exhaust fan to stop smoke, coordinated shutdown modular air conditioning units, install smoke Hangzhou purifier, stop up the wind. Hangzhou Xingda ventilation equipment to undertake all types of tin ventilation engineering, Buy fume purification, tin ventilation engineering Hangzhou Lin'an fume purification, tin ventilation engineering Shaoxing, Hangzhou and fume purification project, Hangzhou ventilation engineering, installation and design, kitchen hotel fire Smoke engineering, Hangzhou, central air-conditioning duct installation and other train services. The company has experienced professional and technical personnel, specialized in various industrial and mining enterprises, hotels ventilation pipe installation, ventilation ducts schools, hospitals and other ventilation and exhaust gas treatment, waste dust collection of design and installation. Reduce ventilation noise source in noise control requirements of the occasion should be used in low-noise ventilation equipment. Different types of ventilation equipment, with the consent of wind, air pressure, centrifugal ventilation equipment airfoil blade noise, ventilation equipment centrifugal type blade forward version noisy. Appropriate to reduce the speed of ventilation equipment. Circumferential speed of the impeller rotation noise ventilation proportional to the square of 10, the circumferential velocity vortex noise impeller 6 th (or 5 th) proportional. Therefore, to reduce speed to reduce noise. Design of ventilation systems, should try to reduce the pressure loss of the system. When the total amount of losses and pressure ventilation system is large, it can be divided into small systems. Flow velocity in the pipe should not be too high, so as not to cause noise regeneration. Airflow velocity should be selected according to the different requirements of the relevant provisions within the established pipeline. High hoods cleaner _ _ Binjiang District Hangzhou Xingda ventilated fume purification supplied 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.