標準號：BS 4856-4-1997
中文標準名稱：風機盤管供暖裝置、單元供熱器和單元供冷器試驗和評定方法.第4部分:風機盤管供暖裝置、單元供熱器和單元供冷器的混響室聲級測定法
英文標準名稱：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
標準類型：Q83
發布日期：1997/9/15 12:00:00
實施日期：1997/9/15 12:00:00
中國標準分類號：Q83
國際標準分類號：17.140.20;91.140.30;97.100.01
適用范圍：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.