Sell wind driven roof ventilator, roof ventilator without power,roof air ventilator @China (Mainland)

Advantages 1.Environmentally friendlly: Aonuodi roof ventilating fan is efficient, explosion-proof, uses no electric energy, and causes no noise and spark. 2.Dust-proof: the wind turbine exhaust fan continuously operates 24 hours a day, This lowers the possibility of dust adhesion and makes the fan easy to clean. 3.Light weight: The weight of roof ventilating fan along with the base is approximately 15 kg, so the users need not take into consideration when designing steel structures. 4.Daylight: The interspace between blades allows natural light to provide effective internal lighting during the day, thus reducing the electricity cost by 5-10%. 5.Long lasting: Aonuodi roof ventilating fan has a life time of over 15 years. 6.Curved blades are the result of scientific computing technology. They are not only rainproof but also contribute to high efficiency ventilation. The blade will perform self rotation operations quietly in circumstances where breeze is not less than 0.2m/s and the indoor and outdoor temperature difference exceeds 0.5

Post by Daisy Ma    Energy    @2012-08-01 15:55:45