Optimization of heating and cooling operations of steam gate valve

Optimization will be done on the basis of a calculation of an initial medium temperature step and, following that, the maximum heating or cooling rate of temperature changes. Calculated results are of great practical significance because it will be possible to use them in power plants. Temperature step change can be easily implemented by suddenly opening hot water or steam supply into the interior of a pressure element, which has a lower initial temperature. The power units can be utilized in a way that will improve their longevity. The proposed method is simple and has many advantages. A quasi-steady state is not assumed and element geometry can be complicated. The optimization is based on the highest stress in the whole construction.