TIANCHANG TG TURBINE VENTILATION CO., LTD is a long history company on main business of rooftop turbine ventilators.The characters and the advantages of our TG Rooftop Turbine No-power Ventilators1. The theory of running of Rooftop Turbine Wind-driven VentilatorsOur Rooftop Turbine no-power Ventilators do not need electric power instead of easily driving the turbine vanes to rotate by nature breeze or the temperature difference between indoor and outdoor so as to make true the running without cost. They are really practical and energy-saving products without noise and pollution so they can save much electricity and labors for users, in order to lower production cost clearly, to improve the working surrounding of the workshop, to rise the working efficiency and even to strengthen the quality of their products.2. The constitutes of the materialOur Rooftop Turbine no power Air Ventilators are made of whole stainless steel, galvanized sheet and aluminium which needs no maintenance longer, are anti-acid and anti-erosion by the only once investment. TG Rooftop ventilators set up UBC bearings which are imported from the USA and can be assured for using about 15 years.3. The values of no power Turbinr Rooftop Ventilators A. They can exhaust the hot air, waste gas, dust and other harmful gas; meanwhile, the fresh air outdoor can come into the workshop so as to better the working surrounding, to make the workers more energetic and to increase the benefits of the company.B. Lower the production costs of users. Because our no power ventilators belong to the products which need no electric power and other consumes for the lifelong time after the only once investment. To a large extent, they can lower the product costing.C. Enhance the concept of their safety in workshop.First of all, if there is no much harmful gas in workshop, the air can ventilate normally so that they do not need to worry about the dangerous accidents caused by bombing or mistakenly using the electric power.Secondly, in case there happens the fire in workshop, our Roof Turbine ventilators on the roof can make the smoke indoor flow out more quickly, at the same time which can bring out more time for the victims to escape and reduce the loss by the accident.D. They can demonstrate the strength and the humanization management of the enterprise, enhance the "people oriented" principle of the modern enterprises and make a show of the time colorful image.E. Beautify our living and working surrounding. These no power ventilators are possessed with an attractive appearance, so they can play their part in beautifying the surrounding. The Quantity for Installing Our Ventilators: (References: The ventilating times of the different buildings) The ventilating cube=the cube of the building×the ventilating times Ventilating cube Installing Quantity = ---------------------------------- Ventilating cube/hr For example: There is a building which is 50M length, 12M width and 6M height. The difference in temperature between indoor and outdoor is 10 °C, and the wind speed is 9.6KM/hr. Moreover the ventilating times of the casting factory according to the standard material is between 10 to 30 times per hour. So the ventilating cube is (50×12×6)×10 times/hr = 36000cube/hr .3600cbm/hr --------------------------------------------------------------------------- =14.6(units) 2458cbm/hr (according to the different model 880/500/300) So we’d better install 15 units’ ventilators for the workshop.