Research on energy-saving heating by flexible allocation of cascade heat energy in cogeneration unit
SU Chao-hong
SUN Shuang-lu
SHI Lei
Abstract：The desuperheater is installed on the steam extraction heating pipeline of the condensing-type cogeneration unit.The desuperheated water is generally taken from the outlet of the condensate pump and has a lower temperature.Due to the significant difference in enthalpy between steam and water,direct mixing of the two would result in a considerable loss of heating energy for steam extraction.The study analyzes the thermal system operating parameters of the unit and the quality of the water source,and a high-pressure and high-temperature water source with a pressure close to that of the condensate and a temperature closer to the steam extraction is selected as the new allocated water source.By utilizing the existing desuperheater and industrial steam extraction,a new production process and new operating conditions are established for energy consumption research.The study indicates that the new production process can improve the energy efficiency by 0.5%compared to the original condition,and the heating capacity of the unit increases by 2%.
Keywords：combined heat and power generationflexible allocationsteam extraction heating
Publication Date：2023-12-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 50-52 )