Liaocheng Flextronics Ventilation Equipment Co. specializes in non-powered and non-powered natural ventilation fan and so on. Natural ventilation is non-powered fans, by the indoor and outdoor thermal pressure, complemented by natural wind, without the need for power-driven situation continuously indoor air exhausted to the outside air based on thermodynamic principles roof without power fan, while fresh outdoor air continually inflow of non-powered turbine parts, so as to promote and improve the indoor temperature and humidity conditions. Since this is a way of saving ventilation, so the "heating, ventilation and air conditioning design specifications" GB50019-2003 the provisions of article 5.2.1: eliminating waste heat buildings, I wet the ventilation design, priority should be the use of natural ventilation. Liaocheng Flextronics Ventilation Equipment Co. specializes in non-powered and non-powered natural ventilation fan and so on. Adjustable axial fan air flow method, the amount of wind speed axial fans during adjustment: by changing the axial fan speed to achieve axial fan characteristic curve changes, thereby changing the amount of non-powered ventilation fan typhoon is saving axial fan effective way to run. 2, constant speed axial fan air flow regulation: for axial fan. By increasing the blade angles can be increased pressure, can also be adjusted by varying the amount of ventilation series or number of pieces of work impeller wheel. However, these adjustments are generally required to be carried out in the fan down, only for a longer phase of adjusting the amount of wind, unable to achieve a smooth adjustment of ventilation and follow the actual amount of ventilation required. No power blower parts, Flextronics ventilators (certified), Heilongjiang without power fan ventilation equipment from Liaocheng Flextronics Limited. Liaocheng Flextronics Ventilation Equipment Co. (www.lcwctf.com) (www.lcwctf.com) is an industry leader in Shandong Liaocheng, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Flextronics ventilators in leadership with the staff warmly welcome all inquiries negotiations to create Flextronics ventilation a better future. You can also access (www.lcwctf.com/supply_details_49828645.html), for more information about the company.