Product Overview: DWT-II Centrifugal Roof Fan

1、 Multiple specifications and types, with a wide range of applications; Fan models can be selected according to different requirements such as usage scenarios, air volume, pressure, and noise
Centrifugal roof fan: model DWT-II, suitable for situations with low air volume and high pressure requirements; Ideal energy-saving ventilation device for air.
2、 High efficiency and low noise: This fan adopts advanced CAD software and is designed through multi-objective optimization. The DWT-I Ⅰ series has eight types of fan numbers, which use the method of changing the speed, angle, and blade shape to expand the range of performance parameters to meet the needs of different operating conditions, achieve fan system matching, and facilitate energy saving and noise reduction;
3、 Smooth operation and long service life: This fan has a small moment of inertia, high precision in dynamic stability, and smooth operation. The requirements of the enterprise's internal control standards for various performance indicators are higher than those of the fan industry standards, ensuring that the fan is in a leading position among peers;
4、 Wide applicability: This fan can be made into explosion-proof and anti-corrosion types according to usage requirements, suitable for forced exhaust in flammable, explosive, and corrosive gas environments;

Product Structure and Performance

Performance parameter table

Experimental verification

1、 Introduction to Tianhong Commissioned Experimental Laboratory (a large domestic wind turbine inspection laboratory):

1: Our laboratory has passed the qualification review of the Energy Efficiency Labeling Management Center of China National Institute of Standardization and obtained the qualification of Energy Efficiency Testing Laboratory for Ventilation Fan Energy Efficiency Labeling. After the fan products are tested by the center, they can be directly registered online and labeled with energy efficiency labeling based on the test report, and then produced and sold.

2: Our laboratory has 198 quality inspection projects for fan products, and the parameters have passed national laboratory accreditation and metrological certification.

2、 The power performance and noise testing laboratory ensures the accuracy of the results through the following methods:

1. Strictly follow standards such as ISO 5801 (GBT 1236), ISO 13350 (GBT 19843), ISO 5802 (GBT 10178) for design, construction, and testing operations;

2. The aerodynamic performance test adopts advanced multi nozzle method, replacing the traditional pitot static pressure tube to test flow rate, further improving accuracy;

3. The laboratory extensively uses new precision testing equipment and measuring devices;

4. Laboratory equipment and measuring tools have undergone strict calibration and regular re inspection and self calibration;

5. Multiple national level laboratories in China have conducted multiple "same machine inter laboratory comparisons" and participated in the capacity verification activities of ventilation fan testing laboratories carried out by national institutions.

3、 In addition to aerodynamic performance and noise detection functions, the laboratory also has the following testing capabilities:

1. Conduct impeller overspeed test according to JB/T 6445 Industrial Ventilation Fan Impeller Overspeed Test.

2. Conduct fan vibration testing in accordance with standards such as JB/T 8689 "Vibration Testing and Limits for Ventilators".

3. Conduct thrust testing on tunnel jet fans in accordance with the ISO 13350 standard for performance testing of industrial ventilation fans and jet fans.

Ensuring the efficiency of Tianhong's product research and development, reliable quality control, and improving the accuracy and authenticity of technical data.