Analysis Of Thermal Economics Of Nuclear Power Circuit

Energy is the material basis of human survival, is an important guarantee of humanscientific and technological progress. The development of human today, the demand forenergy is increasing, the traditional fossil energy is depletion, nuclear energy as a kind ofemerging energy is widely used, the nuclear power developed rapidly in our country theseyears, the built and the construction of nuclear power has been a certain size. Although thehidden energy of nuclear energy is very large, we still need to consider the energy efficiencyand energy economy. Thermal economics combined energy use with economic principles,make it possible to solve these problems. Human much more used thermal economics toanalyse and optimize cogeneration and the thermal power plant, no people use thermaleconomics to study the nuclear thermal system. This article make the thermodynamic systemof Daya Bay nuclear power circuit as the research object,using the matrix mode thermaleconomics of thermal economics to analyse it and giving advice of optimizing it.This article first determine the operating parameters of the rated conditions of the nuclearpower plant and environmental parameters, we got exergic through enthalpy and entropyobtained by steam software program, we use exergic analysis method to study exergicefficiency, unit exergic consumption, loss of exergic and coefficient of exergic loss of thevarious subsystems in the minimum integration degrees of1000MW thermodynamic systemof Daya Bay nuclear power circuit, have made a preliminary grasp of the energy utilization ofthe various subsystems, and then by calculating the exergic efficiency and exergic losses ofthe operating conditions of90%and70%, compared the results with100%of the ratedconditions then found out the most suitable conditions of nuclear power subsystems as well asthe breakthrough of improving the exergy efficiency.Reusing the matrix mode thermal economics theory of thermal economics listed exergiccost equation, the unit thermal economics cost equation, used matlab to calculate the matrixequation, got exergic costs, unit exergic cost, economics cost of per unit and exergiceconomic cost of per unit of100%of the rated conditions, summed up the thermodynamicprocesses of exergic cost of the rated conditions, as well as the rules of the overall distribution,verify the energy loss not equivalence principle in the different parts. Then got exergic costs, unit exergic cost, economics cost of per unit and exergic economic cost of per unit of90%and70%operating conditions of the thermal system. compared them with the rated condition. Gotthe law of the economic costs changed, found the reason causing changes in cost.Finally, because the thermodynamics and economics are the basis of, the thermaleconomics. thermodynamic state parameters and the investment and management costs havean important impact on it, to observe hot economy of thermodynamic system of nuclearpower circuit by changing the parameters as well as the investment costs to find abreakthrough reduce the economic costs of nuclear units heat, pointed the factors affecting theunit heat Economics cost, and proposed to increase the the crew economic optimizationprogram, and ultimately give the reference of optimizing thermodynamic system of nuclearpower circuit.