New ideas for energy savings – “Creative thinking” for compressors’ energy efficiency

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It is well known that air compressors have high energy consumption; if these compressors can be upgraded to be more energy-efficient, thereby reducing their energy use, it can bring significant economic benefits. Of course, in areas where electricity costs are low, such as Inner Mongolia, the desire to carry out such energy-saving upgrades is not as strong. But in most places, the electricity cost is still around 0.7 to 0.8 yuan. Therefore, energy-saving upgrades for air compressors are also necessary. We start with the principle of air compressors. The work done by an air compressor is a process of integration, and an isothermal curve represents the most energy-efficient scenario. As we all know, it’s actually not possible to follow an isothermal curve; this is merely a concept from the ideal gas law. Therefore, our multi-stage compressors all feature multi-stage exhaust gas cooling. However, there are specific requirements regarding the temperature difference between the compressed air and the cooling water; generally, this difference should be 8 degrees. It is well known that the lower the temperature of the gas entering the second stage of compression, the more energy-efficient the air compressor will be. Hence, improving the heat exchange efficiency of the intercooler helps to achieve greater energy savings. Current cooling water treatment relies on chemical agents; the new approach involves using physical equipment in combination with chemical agents. Therefore, it is sufficient to add another piece of physical water treatment equipment to improve the heat exchange efficiency of the intercooler. Additionally, carbon buildup in air compressors can also lead to increased energy consumption for those compressors.