Basic knowledge of compressed air system
1. Compressed air
Refers to air with an absolute pressure greater than 0.1Mpa
Second, the prescribed working conditions of the screw air compressor
Inspiratory pressure: 0.1Mpa (absolute pressure)
Inhalation temperature: 20℃
Inspiratory relative humidity: 0
3. Air compressor exhaust pressure
Refers to the pressure measured at the standard exhaust position of the air compressor
4. Air compressor exhaust temperature
Refers to the temperature measured at the standard exhaust position of the air compressor
V. Air compressor displacement
The actual volume flow of the compressed air compressed and discharged by the air compressor at the exact discharge position. The flow rate should be converted to the suction condition
Six, specific power
Compressor shaft power required to compress a unit volume of air
7. Air compressor noise
Refers to the noise sound pressure level measured in an environment where the reflection plane is larger than the projection of the measurement surface on a wide outdoor courtyard
8. Fuel consumption of air compressor
The quality of lubricating oil required to compress a unit volume of air
Nine, adsorption type noise dryer
A noise filter that separates water vapor in compressed air by adsorbing molecules in the gas or liquid phase on the adsorption surface. The adsorbent can remove the adsorbed water and regenerate
10. Inlet volume flow
Converted to the maximum volume flow rate of compressed air entering the dryer (including regeneration, pressurization or cooling air) under the specified operating conditions with an absolute pressure of 0.1Mpa and a temperature of 20°C
11. Pressure dew point
Corresponding to a certain pressure, the temperature at which water vapor in the compressed air starts to condense into a liquid state
12. Oil content of compressed air
The mass of oil (including oil droplets, suspended particles, and oil vapor) contained in a unit volume of compressed air, converted to a value under suction conditions
13. Dust content of compressed air
The mass of dust contained in a unit volume of compressed air, converted to a value under suction conditions
14. Moisture content of compressed air
The sum of the mass of water and water vapor in a unit volume of compressed air
15. PPM
A symbol indicating the content of trace substances in a mixture, which refers to the number of parts per million or parts per million
16. Compressed air filter
Equipment for separating and filtering pollutants in compressed air
17. Freeze dryer
A dryer that separates water vapor through a refrigeration cycle
18. Effective volume flow (air supply)
Converted to the specified operating conditions with an absolute pressure of 0.1Mpa and a temperature of 20°C, the maximum volume of compressed air that the dryer removes, that is, the remaining part of the air flow for regeneration, supercharging or cooling is deducted
19. Gas consumption (gas demand)
Corresponding to a certain working condition, the sum of the compressed air flow required by all the gas equipment
Twenty, pressure zone
The range of pressure fluctuations in the compressed air system, that is, the difference between the maximum and minimum system pressure
09/10/2020
1. Compressed air Refers to air with an absolute pressure greater than 0.1Mpa Second, the prescribed working conditions of the screw air compressor Inspiratory pressure: 0.1Mpa (absolute pressure)
09/10/2020
Synthetic lubricants are used in positive displacement devices, lubricant processing and hydrocarbon gas compressors are controversial. Many of these applications require synthetic products to limit toxic catalysts, reduce gas solubility and thereby lead to loss of viscosity and limit reactions with gases.
09/10/2020
Electricity is one of the most important energy sources in a country, and it is also the lifeblood of national economic construction and daily life. No matter what form of power generation is used, compressed air is inseparable in the power station.
09/10/2020
In the safety management system, the pressure sensor realizes the side airbag control. Air compressor safety management system is also a field where sensors are widely used. There are two solutions for controlling the side airbag of the air compressor:
09/10/2020
Take a single screw air compressor as an example to illustrate the working principle of an air compressor. The working process of a screw air compressor is divided into four processes: suction, sealing and conveying, compression and exhaust.
09/10/2020
In a DC motor control system, the controlled quantity is generally the speed of the motor, and the purpose of control is to keep the speed of the motor at the required fixed value. But in the actual production process
09/10/2020
At present, the German court has pronounced that Apple has infringed on Motorola’s two patented wireless communications technologies and prohibited the sale of products using these two technologies in Germany.
09/10/2020
I. Overview Among many commonly used energy sources, compressed air can be said to be one of the popular energy sources second only to electricity. Although the use of compressed air has not yet penetrated into ordinary households like electricity,
09/10/2020
1. The feasibility of power saving transformation of air compressor The energy consumption of air compressors is obvious to all. The okmarts.com high-pressure fan power saver developed by okmarts.com based on the principle of frequency conversion can save electricity for all motor-driven air compressors. The overall power saving effect is remarkable, with a power saving rate of 20-50%.
09/10/2020
The author of okmarts.com came into contact with the HVAC engineering design of some design institutes, and compared the "Code for Design of Heating, Ventilation and Air Conditioning"
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