On Mathematical Model of Condenser Equipped with Water-Jet Ejector

The article presents a symbolic model of a steam turbine plant condenser with a water-jet ejector. It gives the algorithm that allows one to calculate the heat transmission coefficient as well as to get the condenser characteristics as a dependence of coexistence temperature in conditions of pressure in the condenser from steam consumption. The calculation results according to the model offered are illustrated by the example of the condenser KG2-6200-III of the steam plant T-110/120-130-5 with water-jet ejectors EV12-1100 and EV7-1000. It is shown that the dependence of pressure in the condenser from air inflows into the vacuum system when water-jet ejectors are used consists of two parts, one of them is actually horizontal, and the other is leaning. The horizontal part is mostly determined by the work of the condenser, while the leaning part - by the interactions of the water-jet ejector and the condenser. The model offered can be used for stating the influence of different factors on the running efficiency of heat electric stations.