GB 3853-83 General Air Compressor Volute Capacity Test Method
Overview
GB 3853-83 is the Chinese national standard for the test method of volumetric air compressors performance. This standard is applicable to the evaluation of volumetric compressor performance in terms of quality, application, and other standardized metrics. For volumetric compressors, this performance test procedure incorporates a series of calculations and testing procedures that measure the efficiency, power, air flow rate, and other essential parameters of the compressor.
Performance Test Procedures
The performance test procedures in GB 3853-83 pertain to the test conditions, performance measurement, and other normalization procedures of the air compressor under test. Generally, the test conditions are standard, the compression efficiency (ηC) shall not exceed 0.85, and the compressor shall be supplied with a determined amount of fuel oil and lubricating oil.
In terms of performance measurement, the performance of a compressor can be evaluated based on the ISO standard of compressor parameters such as the overall efficiency ratio (ηo), input power as a whole (η kf/N), volumetric displacement (Vd), volumetric efficiency (η v), air delivery capacity (Qd), pressure delivery coefficient (Cd), isothermal efficiency (ηit), etc.
Furthermore, in order to ensure consistency in the performance measurement, the volumetric compressor performance test must also be designed and conducted within certain environmental conditions. Specifically, the atmospheric pressure shall not be below 700hPa and the ambient temperature shall not exceed 30°C when conducting the performance test.
Test Equipment and Apparatus
In order to properly execute the performance test procedures as outlined in GB 3853-83, certain pieces of apparatus and equipment are required. Specifically, the test bench, fuel oil, lubricating oil, fuel thermometer and an oil thermometer shall all be provided for the test execution. In addition, gas or liquid measuring equipment, vibration monitoring devices, and pressure gauges shall also be provided according to the guidelines.
In addition, in order to ensure the precision of the test results, all of the test apparatus must be calibrated prior to test execution and in accordance with local regulations.
Test Procedure
Once the test conditions and apparatus have been established, the volumetric compressor performance test can begin. The general procedure of the test encompasses, the following steps:
1. Ensure the test equipment and apparatus are properly set up and calibrated.
2. Fill the compressor with the needed fuel and lubricating oil.
3. Start the compressor and let it reach full operating speed.
4. Measure the noise generated by the compressor and evaluate the vibration.
5. Measure the compressor inlet and outlet pressures and calculate the isothermal efficiency as needed.
6. Record all data for an evaluation of the compressor performance.
Conclusion
GB 3853-83 is the Chinese national standard for the test method of volumetric air compressors performance. In order to properly execute the performance test procedures as outlined in GB 3853-83, certain pieces of apparatus and equipment are required. Generally, the test conditions are standard, the compression efficiency (ηC) shall not exceed 0.85, and necessary measurement are made to evaluate the compressor performance. This performance test procedure incorporates a series of calculations and testing procedures that measure the efficiency, power, air flow rate, and other essential parameters of the compressor. This standard is applicable to the evaluation of volumetric compressor performance in terms of quality, application, and other standardized metrics.
