The construction industry is the main source of energy consumption and carbon emissions in China. It is reported that the energy consumption of HVAC systems accounts for 40% -50% of the total energy consumption of buildings, and fans are a key part with energy-saving potential. In daily operation, old ventilation systems often encounter problems in terms of efficiency, noise, and expansion

1. High energy consumption: Traditional AC fans are driven by asynchronous motors, with energy conversion efficiencies ranging from 50% to 60%, resulting in significant energy waste.

2. High noise: The AC fan is driven by a traditional pulley, resulting in significant noise.

3. Maintenance complexity: The structure is complex and prone to wear and tear.

4. Weak regulation: slow response, poor accuracy, limited regulation range, difficult to match real-time load demand, and poor flexibility in use.

And the transformation of the fan is precisely the key to solving the problem. Replacing high-efficiency EC fans in existing systems can quickly improve overall performance and significantly reduce energy consumption with minimal investment, resulting in significant energy-saving effects in the short term.