Abstract: Against the backdrop of the global transformation of the energy structure and increasing environmental protection pressure, the power generation efficiency and economic performance of thermal power plants have become the focus of research. As the core equipment of thermal power plants, the steam condensing unit's power generation efficiency is directly related to coal consumption, operating costs, and environmental impacts. Improving the power generation efficiency can not only reduce coal consumption and greenhouse gas emissions but also enhance the economic benefits of power production. Therefore, it is particularly important to conduct in-depth research on the energy consumption loss of the steam condensing unit, especially the energy consumption loss at the cold end.