[Unpowered Fan] Roof Unpowered Fan Principle Roof Unpowered Fan Installation
With the development of science and technology, people’s requirements for environmental comfort are also increasing. With the gradual increase of plastic-steel structure workshops and workshops, and the rapid development of aquaculture, flowers and other industries, roof unpowered fans are more and more widely used in people’s work and life as an energy-saving and environmentally friendly ventilation equipment.
I. The working principle of the roof unpowered fan
The unpowered fan is a turbine that uses the natural wind speed of nature to drive the fan The principle of rotation and indoor and outdoor air convection, a device that accelerates and converts the air flow in any parallel direction into vertical air flow from bottom to top to improve the effect of indoor ventilation. The fan does not need electricity, has no noise, and can run for a long time. According to the natural law of air and the principle of airflow flow, it is rationally arranged on the top of the roof, which can quickly discharge the hot air and dirty gas in the room and improve the indoor environment.
Second, the use of roof unpowered fans
1. Generate air convection and exhaust heat.
2. Reduce air conditioning load and increase indoor fresh air.
3. Extract the roof moisture, mildew, steam, and keep the roof dry.
4. Replace the heavy electric exhaust fan, reduce the cost of the bracket, save the electricity bill, and reduce the noise.
Third, how to choose a roof unpowered fan according to the environment?
1. The number of unpowered fans=building capacity*the number of air changes per hour/the ventilation capacity of a single unpowered fan.
2. Building volume = length * width * height.
3. Air changes per hour: Determine the number of air changes per hour based on building usage.
4. The ventilation capacity of a single unpowered fan: according to different perennial wind, height, indoor temperature difference, and the exhaust performance of different types of natural ventilators.
IV. Installation and precautions of roof unpowered fan
1. Before installation, all components of the fan should be fully checked. Whether the parts are complete, whether the rotation directions of the impeller and the casing are consistent, whether the connection of each part is tight, whether the impeller, main shaft, bearing and other main parts are damaged, whether the transmission group is flexible, etc. If problems are found, they should be repaired and adjusted immediately.
2. When installing, pay attention to checking the casing of the unpowered fan. There should be no tools and debris that have fallen or left in the casing. On some joint surfaces, in order to prevent rust and reduce the difficulty of disassembly , should be coated with some grease or mechanical oil, the joint surface between the fan and the foundation, the inlet and outlet ducts should be adjusted to match naturally, and the connection should not be forced. horizontal position.
3. Installation requirements: Install according to the position and size shown in the drawings. In order to obtain high efficiency, it is especially necessary to ensure the clearance size between the air inlet and the impeller.
