Air flow measurement of utility boilers is often liken by using venturi duct

latticed wing

multiple pilot tube and double venturi tube. Operation has proved that

with rational arransement of measurements

the relisbility and precision of thais measuring elements quite satisfy the requirement of boiler for air flow measurement and operatfon control. HOwever

there is still a number of generatins units operating with unrahonal arransement of ait now measurements

whiCh lesd to a acer measurement deviation

difficult air flow control and less optimal combustion. This peper presents an analysis of the testing results to a number of power plants with different measurement arrangements and put forward some conceptual proposals to their rational arransement of measurements