Research on Heat Load Optimization and Cogeneration of Heat and Power Based on Nuclear Energy Heating

Abstract

Compared with the traditional heat and power generation, the nuclear energy co-generation method follows the principle of energy cascade utilization and energy quality matching, which avoids a large amount of cold source loss in condensing power plants, greatly improves the thermal efficiency of the power plant, and makes energy efficient and efficient. Clean Lee. As far as my country’s national conditions are concerned, under the premise of the current national energy structure adjustment and the solemn commitment to energy conservation and emission reduction, the development of nuclear energy cogeneration is an important long-term strategy for national energy conservation and emission reduction, and nuclear energy cogeneration has an increasingly prominent position in the national energy strategy. Nuclear energy is a clean energy in the true sense, and its advantages such as environmental protection, high energy density and stability are the starting point of nuclear energy heating technology research. At present, China's nuclear energy heating technology is in its infancy, and a series of in-depth studies are pending in design, construction, operation management, standards and specifications. This project analyzes in detail the key technologies of China's nuclear energy heating and its main technical parameters, including the low-temperature nuclear energy heating reactor and the extraction steam heating technology of the steam turbine unit of the nuclear power plant. The mutual reference and analysis of the ventilation technology standardization of China's nuclear power plants are carried out, and relevant suggestions are put forward to further improve the HVAC standards and fire protection specifications of China's nuclear power plants. The optimal basic heat load ratio of the low temperature nuclear energy heating reactor is obtained by research and calculation. On the basis of analyzing the contradiction between supply and demand of low-temperature nuclear energy heating reactors in China, a method for determining the thermal load ratio of low-temperature nuclear energy heating reactors based on the reactor power adjustment range and thermal load duration map is proposed. Aiming at the problem of low central heating load in China's non-heating period, measures to improve the heat load factor of low-temperature nuclear heat supply reactors are proposed, including cross-season heat storage system, combined heat supply and seawater desalination, and combined cooling and heating technology. The multi-factor and multi-level orthogonal test analysis was carried out on the optimal thermalization coefficient of nuclear energy cogeneration, and the sensitivity ranking of the key influencing factors of the optimal thermalization coefficient of nuclear energy cogeneration was determined.