机外静压校核，目的是校核所选的新风机组的机外静压是否满足新风管路压力损

The external static pressure check is to check whether the external static pressure of the selected new fan group meets the pressure loss requirements of the fresh air pipeline by comparing the most unfavorable pipeline resistance loss of the fresh air pipe section with the external static pressure of the machine If the pressure loss of the most unfavorable pipeline is less than the static pressure outside the machine, the requirements are met. According to the above, the external static pressure of the selected new fan group is 290Pa, and the verification steps are as follows:

The purpose of the off-machine static pressure check, the purpose is to check whether the selected new fan group of the machine static pressure to meet the new wind pipe pressure loss requirements, the method is to the new duct section of the most adverse pipeline resistance loss and off-machine static pressure comparison, if the most adverse pipeline pressure loss is less than the machine static pressure, then meet the requirements. According to the above, the selected new wind turbine outside static pressure is 290Pa, the verification steps are as follows:

The purpose of external static pressure check is to check whether the external static pressure of the selected fresh air unit meets the pressure loss requirements of the fresh air pipeline. The method is to compare the most unfavorable resistance loss of the fresh air pipeline with the external static pressure. If the most unfavorable pressure loss of the pipeline is less than the external static pressure, it meets the requirements. According to the above, the external static pressure of the selected fresh air unit is 290pa, and the check steps are as follows: