標準號：BS 848-9-2007
中文標準名稱：一般用途風扇.公差、變換方法和技術數據表示
英文標準名稱：Fans for general purposes - Tolerances, methods of conversion and technical data presentation
標準類型：Q76
發布日期：2007/2/28 12:00:00
實施日期：2007/2/28 12:00:00
中國標準分類號：Q76
國際標準分類號：23.120
引用標準：ISO 5801-1997;ISO 5802;ISO 13347-1;ISO 14694;ISO 14695
適用范圍：This International Standard specifies performance tolerances and the technical data presentation of industrial fans of all types. It does not apply for fans designed solely for low-volume air circulation, such as those used for household or similar purposes (ceiling and table fans, extractor fans, etc.). For jet fans refer to ISO 13350.The upper limit of fan work per unit mass is normally 25 kJ kg?1, corresponding to an increase of fan pressure of approximately 30 kPa for a mean density in the fan of 1,2 kg m?3. For higher values, agreement is to be reached between the supplier and the user.This International Standard embraces the four installation categories defined in ISO 5801:A free inlet, free outlet;B free inlet, ducted outlet;C ducted inlet, free outlet;D ducted inlet, ducted outlet.The performance of a fan can vary considerably with the installation category it is operating within. Therefore,these categories form an important part of the definition of the fan’s technical data presentation.