制冷和空调设备噪声的测定.PDF

ICS 27.200 J 73 JB/T 4330 －1999 制冷和空调设备噪声的测定 Determination of noise emitted by refrigeranting and air conditioning equipments 1999-07-12 发布 2000-01-01 实施 国 家 机 械 工 业 局 发 布 JB/T 4330 －1999 目 次 前言 1 范围 ·····························································································································································1 2 引用标准·····················································································································································1 3 测试环境 ·····················································································································································1 4 需测定的量与测量误差······························································································································1 5 测量仪器 ·····················································································································································2 6 机组的安装与运转 ·····································································································································2 7 基准体和测量表面 ·····································································································································2 8 声压级的测量 ·············································································································································3 9 测量表面平均声压级和声功率级的计算 ··································································································4 10 测试记录 ··············································································································