BS 4856-4-1997 风机盘管供暖装置、单元供热器和单元供冷器试验和评定方法.第4部分:风机盘管供暖装置、单元供热器和单元供冷器的混响室声级测定法

标准号：BS 4856-4-1997
中文标准名称：风机盘管供暖装置、单元供热器和单元供冷器试验和评定方法.第4部分:风机盘管供暖装置、单元供热器和单元供冷器的混响室声级测定法
英文标准名称：Methods for testing and rating fan coil units, unit heaters and unit coolers - Determination of sound power levels of fan coil units, unit heaters and unit coolers using reverberating rooms
标准类型：Q83
发布日期：1997/9/15 12:00:00
实施日期：1997/9/15 12:00:00
中国标准分类号：Q83
国际标准分类号：17.140.20;91.140.30;97.100.01
适用范围：This British Standard establishes general rules for acoustic testing of fan coil units, unit heaters and unit coolers, in order to determine sound power levels. This standard is applicable to equipment operating under steady state conditions. It applies to sources that produce steady broad-band noise, and to sources that may produce significant discrete frequency components or narrow band noises.