风机噪声计算中存在的若干问题
Some issues in fan noise calculation
摘要：
指出了现行暖通空调专业风机噪声声功率级计算公式和相关数据表中存在的错误，解释了比声功率级和比A声功率级的差异。建议在目前的条件下，空调消声计算中所使用的声功率级宜采用空调风机制造厂提供的实测值，空调机组制造厂如若能够提供空调机组整机的出口、进口和机外声功率级的混响室实验值，将使得空调消声计算结果更加符合实际。
Abstract：
Points out some mistakes existing in the HVAC fan noise sound power calculation formulas and related datum tables. Explains the difference between specific sound power level and the specific A-weighted sound power level. Under the present conditions, proposes to adopt the measured values of sound power level of fans given by the fan manufacturer in noise elimination calculation for air conditioning. If the manufacturers could offer the measured values of sound power level of inlet, outlet and outside of the AHU in a reverberation chamber, the noise elimination calculation results would better meet the needs of practice.
Keywords:fannoise,noiseeliminationcalculation,specificsoundpowerlevel,specificA-weightedsoundpowerlevel