CALCULATION OF THE LIMITING DRYNESS FRACTION AT THE END OF EVAPORATING SURFACE OF STEAM BOILER

This article studied the hydrodynamics of steam boilers with natural circulation. Using analytic equations the hydrodynamic characteristics of the flow in the circuits of a steam boiler are obtained. By method of analysis of the characteristics, the pressure drop between the branches of the boiler circuit also the mass flow of steam-water mixture is obtained. The limit steam dryness at the end of the evaporator surface of a steam boiler is found, that is the reliability of steam generating tubes is defined, that is an actual problem in the operation of the steam device in general.