Influence of Connection Configuration on the Thermal Flow of Hot Water Heating Systems’ Sectional Radiators

“Bottom-down” connection configurations for sectional radiators of water heating systems are widely used in design. In this work, a study of the connection configuration “bottom-down” with the inner spring valve installation has been carried out, which allows organizing the movement of the heat-storage medium in the heating device “vertical down”. The study of a five-section bimetallic radiator model “Base 500” by “Rifar” company in the hydrodynamic software complex STAR CCM+. The distribution fields of temperatures and velocities of the heat-storage medium through the channels of the heater at a heat-storage medium flow rate of 0.1 kg/s have been obtained and presented in the work. The dependence of the thermal flow of one section of the radiator on the temperature head is determined for connection configurations “vertical down”, “bottom-down” and “bottom-down” with the installation of an inner spring valve. It has been established that the use of an inner spring valve at the bottom connection of the heater allows a decrease in the thermal flow by no more than 5%, compared with the connection configuration “vertical down”.