Design and Experimental Validation of Ventilator Airflow Test System
In order to further improve the accuracy of the airflow test of coal mine ventilation fan,taking the demand for airflow testing of a round wind refuge in a coal mine as a starting point,we analyse the principle and problems of airflow measurement by the wind speed method;through a large number of tests,we obtain the corresponding wind speed measurement error of 4.4％when there is a bracket and no bracket,and we use the least square method to obtain the formula for the compensation of the wind speed error;we use the KV621-02 wind speed sensor and the PCI-6225 data acquisition card as the core to design the airflow testing system.After the test,the test system can reduce the measurement error of wind speed by 0.17 m/s,and the minimum relative error of the final wind volume test is only 0.12％.
NETL
NSTL
万方数据
维普
