Thermal State Determination of the Heat Exchanger in the Three-Dimensional Setting

The presented manuscript substantiates the need to calculate the cooling system of modern Turbogenerators using the method of mathematical modeling in the three-dimensional setting. The general formulation of the problem for the calculation of the heat exchanger was carried out, the main initial parameters were determined. The problem of clogging of gas cooling pipes is considered in detail. The influence of this clogging at different percentages of the pipes obstruction on the distribution of cooling gas through them was determined. The operation principle of the cooling system of the 220 MW Turbogenerator is considered. The calculation of the gas coolers in the three-dimensional setting was performed, taking into account the influence of the thermal state of the entire generator structure. The calculation results comparison of the Turbogenerator coolers with the data of experimental studies was also carried out. The combination of the analytical method of calculation with the solution by the mathematical modeling in the three-dimensional formulation by the CFD method.