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Roof Ventilator


China Roof Ventilator supplier, factory, manufacturer


Certeg is a leading China Roof Ventilator supplier, factory, manufacturer that focuses on Roof Ventilator. We will become your trusted partner with reliable product quality and excellent customer service.


Certeg Roof Ventilator


1. The control parameters of the roof ventilator are fan type, material, air volume, total pressure, efficiency, noise and motor power.


2. According to the physical and chemical properties of the gas to be transported, choose ventilators for different purposes. If you are transporting clean air, you should choose a general fan; if you are transporting flammable and explosive gases, you should choose an explosion-proof fan; if you are transporting corrosive gases, you should use a corrosion-resistant fan.


3. When selecting the fan type, the air leakage loss of the piping system, calculation errors, and the negative deviation of the actual air volume and air pressure of the fan should be considered. Generally, the air volume is 1.05 ~ 1.1, and the air pressure is 1.10 ~ 1.15. But it is not too large to prevent the ventilator from operating in a low-efficiency area for a long time.


4. Pay attention to the matching relationship between the resistance characteristics of the pipe network and the characteristics of the ventilator. In order to make the ventilator operate stably, the ventilator should be operated near its highest efficiency point. The operating point of the ventilator is located on the right side of the peak point of the full pressure in the performance curve (that is, the side of the large air volume, and is generally located at 80% of the peak full pressure). ).


5. For ventilation systems with noise reduction requirements, first choose a fan with high efficiency and low impeller circumferential speed, and make it work near the highest efficiency point. Corresponding noise reduction and vibration reduction measures should also be taken according to the propagation mode of noise and vibration generated by the ventilation system.


6. In principle, the roof ventilator has three types: axial flow, centrifugal and mixed flow. Because it is located on the roof, it does not occupy any indoor space is its main advantage. It is generally used for low-pressure exhaust in factories, kitchens, warehouses, and commercial systems that require low pressure. The initial investment and operating costs are low.



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