Among various types of machinery and electrical equipment in various industries in China, motors that are matched with fans account for about 60% of the country's installed motor capacity, and consume about one-third of the country's total electricity generation. It is worth mentioning that most fans experience the phenomenon of large horses pulling small cars during use, and due to changes in production, processes, and other aspects, it is necessary to frequently adjust the gas flow rate, pressure, temperature, etc; Many units still use outdated methods of adjusting the opening of air deflectors or valves to regulate gas flow, pressure, temperature, etc.
This is actually achieved by artificially increasing resistance and meeting the requirements of process and operating conditions for gas flow regulation at the cost of wasting electricity and money. This outdated regulation method not only wastes valuable energy, but also has poor regulation accuracy, making it difficult to meet the requirements of modern industrial production and services, and the negative effects are very serious.
The regulation of air volume is a crucial element in determining whether a fan can save energy. We refer to the process of manually intervening and controlling the fan or pipeline system as fan regulation. If this can be done well, the energy-saving effect of the fan can be guaranteed to a certain extent. Through effective regulation, it is possible to ensure that the fan can work stably while meeting the production requirements for flow or pressure and maximizing energy savings. In the process of adjusting the fan, the choice of adjustment method is very important, as it directly affects whether the energy-saving effect of the fan can be maximized.
If the relative flow rate does not change significantly (or when the adjustment depth is small), the power consumption of several adjustment methods is not significantly different. The adjustment method has little impact on the energy-saving effect, and even not only does it not save energy, but it also consumes more power due to the presence of the adjustment device. The variable speed adjustment curve is close to the ideal curve. So, the variable speed regulation method, especially the energy-saving solution of using variable frequency motor speed regulation, requires the addition of a variable frequency device. For small and medium-sized variable frequency speed regulation, it is recommended to actively try it out; Due to the high price of high-capacity and high-voltage variable frequency speed regulation devices, a comprehensive comparison should be made based on specific circumstances. Generally speaking, the greater the depth of adjustment, the more significant the energy-saving effect.