CONVECTIVE HEAT TRANSFER IN CYLINDRICAL BUND UNDULATION FURNACES
Convective heat transfer and it’s features in the bund undulation furnaces of steam boilers have an important task. The heat exchange surface in the form of tightly compressed helical coiled circular pipes is a special kind of a rough surface. Heat transfer between the flow of combustion products and the heating surface is classified as complex heat exchange, characterized by the simultaneous transfer of heat by radiation and convection. Used hydrodynamic analogy O. Reynolds for solving the problem of convective heat transfer. This method of approximate calculation of heat transfer in turbulent flow of coolant is not associated with the solution of differential equations, and is widely used for various application tasks. Results of authors experiment are consistent with the Nunner’s data.