According to the group standard "Guidelines for Energy Efficiency Grading of Compressed Air Stations" (standard number: T/CGMA 033001-2018), the energy efficiency level of compressed air stations is divided into 5 levels, among which level 1 is the best.
As one of the three terminal industrial equipment of motor systems, air compressors are widely used in various industries, such as manufacturing, petrochemicals, pharmaceuticals, steel, ships, and aviation. Compressed air systems provide critical support for pneumatic equipment, tools, control systems and power equipment in the production process. However, since air compression systems often require continuous operation, their energy consumption is very high. Data show that the annual power consumption of compressed air stations is about 500 billion kilowatt hours, accounting for 9.4% of the country's annual power generation, which shows its huge energy consumption.
In order to promote green and low-carbon development, national policies have listed air compressors as key energy-saving equipment, and the energy efficiency of the system will be improved through technological improvements and management optimization. Energy-saving measures include optimized design of compressed air systems, use of energy-efficient equipment, and regular maintenance to reduce leakage and waste. In addition, the use of advanced frequency conversion control technology and high-efficiency compressors can significantly reduce the energy consumption of the compressed air system. Energy saving in compressed air stations can not only reduce business operating costs, but also reduce carbon emissions, which plays an important role in achieving my country's carbon peak and carbon neutrality goals.
Promoting energy-saving renovation of air compressor systems is a key issue of common concern to enterprises and the country. It is also an effective way to improve industrial efficiency and protect the environment.
Energy saving potential
Affected by factors such as the previous gas design, air compressor and dryer selection, nearly 50% of the compressed air stations currently in service in China cannot reach "level 5 energy efficiency";
System potential: The efficiency difference between level 5 and level 1 is 45%;
Equipment potential: The efficiency difference between level 3 and level 1 of the air compressor energy efficiency standard is 20%; The energy difference between products with different dryer product standards is as high as ＞20%.
The equipment in the compressed air station mainly includes: air compressor units, compressed air drying and purification equipment, monitoring devices, power supply and distribution devices, cooling systems, compressed air pipeline systems, etc. The construction of a first-level energy-efficient compressed air station is a systematic project, which requires comprehensive evaluation, planning and design based on the user's gas demand, operating conditions, gas fluctuations, etc.
The measurement and calculation methods of the compressed air station operation energy efficiency, the energy efficiency test and calculation methods of the volumetric air compressor unit or the centrifugal air compressor unit, and the compressed air dryer test and calculation methods should all comply with relevant national standards.
After clarifying the user's gas demand [pressure, gas volume, compressed air purification level (dew point, oil content, dust content)], it is also necessary to consider the selection of equipment such as air compressors and compressed air dryers; the key characteristics, intelligence level, and stability of intelligent control; operation control, pipe network structure and other issues;
The role of compressed air station energy efficiency testing
According to the measured energy efficiency value, evaluate the actual energy efficiency level and find the gap with the high energy efficiency level;
According to the measured energy efficiency value, compare the excellent indicators and grasp the energy saving space
Evaluate the energy saving amount, estimate the investment cost, and calculate the investment benefit.
Risheng Industry has always adhered to the attitude of "innovation and energy saving" and based on thirty years of technological accumulation, it has continuously made breakthroughs and accumulated strength for "first-level energy-efficient compressed air station" and "first-level energy-efficient compressed air integrated device".