Multi-objective optimization analysis of a combined heat and power system based on useful work of different qualities of heat energy utilization (iSPEC 2020)

In the combined heat and power system, based on the principle of “temperature matching and cascading utilization”, this paper utilizes different qualities of heat energy and proposes the definition of energy efficiency to improve energy utilization efficiency. This paper analyzes the structure of the cogeneration system, establishing a cogeneration system based on different qualities of heat energy, and takes the lowest total cost and minimizes the useful power loss as the objective function. The model establishes a multi-objective function, and uses a fuzzy algorithm to solve it. The calculation example establishes a combined heat and power system, which proves that the utilization of different qualities of heat energy in the combined heat and power system reduces the loss of useful energy and achieves the optimal management of economic utilization and energy value.