Industrial fans. Determination of fan sound power levels under standardized laboratory conditions - Enveloping surface methods Ingestion-build-251241 The development of combustion appliances

The development of combustion appliances which has progressed in the recent years due to the need of saving energy and protecting the environment was paralleled by technical development of chimneys

who might be faced with threats such as heat

which do not require atmospheric oxygen for combustion

local temperature and flow conditions

and from 12in

Industrial fans. Determination of fan sound power levels under standardized laboratory conditions - Enveloping surface methods Ingestion-build-251241 The development of combustion appliances1 Scope This part of ISO 13347 applies to industrial fans as defined in ISO 5801 and ISO 13349. It is limited to the determination of airborne sound emission for the specified set ups. Vibration is not measured, nor is the sensitivity of airborne sound emission to vibration effects determined. The sizes of fan which can be tested in accordance with this part of ISO 13347 are limited only by the practical aspects of the test set up. Dimensional