Design And Performance Analysis Of Nuclear And Solar Complementary System

In order to reduce the dependence on fossil energy resources,it is imperative to develop sustainable clean energy.As a kind of inexhaustible renewable clean energy,solar energy has very broad development prospects.However,due to the intermittency and volatility of solar energy,its large-scale development is hindered.As another form of clean energy,nuclear energy has the advantages of being clean,environmentally friendly,sustainable and long-lasting.However,due to the public attitude,the development of nuclear power is also hindered.Therefore,it can be considered that solar energy can be coupled with nuclear reactor systems in some form,and then their respective shortcomings can be solved to a certain extent.This paper proposes a new type of nuclear and solar complementary power(NSCP)system and launches the system design,modeling,operation simulation,performance analysis,exergy analysis,economic analysis and environmental protection performance evaluation of the NSCP system,which aims at providing a reference for the development of nuclear and solar complementary systems.The main contents and conclusions are as follows:Firstly,a new NSCP system design scheme is proposed,and the working principle and composition of the system are introduced.According to the system parameters,the nuclear energy and solar energy blocks of the system are designed.Based on the design results,the model of the NSCP system is established by using EBSILON software.Secondly,the operation performance of the NSCP system is analyzed under design working condition as well as variable working condition.Then,short-term(one week)and annual operation simulations and analyses of the system are performed.Morevoer,the exergy loss and exergy efficiency of all key components of the system are calculated.The operation analysis results show that the output power and electric efficiency of the NSCP system are 249.6 MW and34.0%.The NSCP system can operate stably for a long term in the preset mode,and the operating simulation results of the NSCP system under the preset operating strategy are consistent with the expected operating results.The exergy analysis results demonstrate that the largest exergy loss(150.06 MW)of the system occurs in the solar tower receiver and the corresponding exergy efficiency is also the lowest,which is 55.0%.Finally,the economic and environmental benefit analyses of the NSCP system are carried out.The analysis results reveal that the levelized cost of electricity of the NSCP system is 0.0585$/k Wh.Furthermore,an extra annual subsidy of 7717,320.0 $ can be obtained.Compared with a coal-fired power plant,the annual emission reductions of dust,sulfur dioxide,carbon dioxide and nitrogen oxides of the NSCP system are 5115.78 t,8792.74 t,357038.66 t and 8313.14 t,revealing relatively good environmental benefits.