Shell And Tube Heat Exchanger

​Hydroelectric power plants use the kinetic energy of water to produce electricity. The alternate current generated by the turbine is then converted to high voltage current by the plant transformers. These transformers heat up due to hysteresis losses, so a cooling system is needed to control the transformer temperature. Some transformers are immersed in oil and use the available water resource for their cooling systems. Shell and tube heat exchangers are used for their compactness. The oil heats up as it comes in contact with the transformer core. Then, the oil flows in the shell side, dissipates heat to the colder water flowing on the tubes side and finally gets pumped back into the transformer.