Thermal Economics Cost Model Of Distributed Energy Network

The industrial revolution has significantly improved people's quality of life,but at the same time it has also brought about excessive resource consumption and serious environmental pollution.It has reached a consensus on the path of sustainable development,and renewable energy such as solar energy and wind energy is highly favored due to its inexhaustible use and friendly environmental protection.But these renewable energy also have natural limitations,such as geographic dispersion,discontinuous production,and random supply.To solve these problems,a distributed energy network should be implemented.The thermoeconomic analysis method integrates the theories and methods of thermodynamics and economics,which analyzes the energy system from the two dimensions of thermal performance and economic performance.It is currently the frontier of energy systems research,and the core indicators of thermal economics analysis are the exergy cost and thermal economic cost.However,no scholars have yet studied the application of thermal economics cost theory to distributed energy networks.Therefore,this paper relying on the national 973 plan(2014CB249200)intends to cite related theories and methods of thermal economics to implement the cost of distributed energy networks,which can not only theoretically contribute to the study of thermal economics cost theory,but also can provide reference for deciding the pricing of energy products,and also help guide the development of distributed energy network.This paper selectis a matrix cost method to build mathematical model,this paper constructs a three-stages distributed energy network thermal economics cost model.The first is the exergetic flow or the subsystem exergy cost model,which is also called the energy cost model.This paper builds a subsystem thermal economic cost model on the basis of non-energy cost allocation at the second stage,ie thermal economic cost = energy cost + non-energy cost.The principle of apportioning main and auxiliary energy products is proposed and a thermal economics cost apportion model for energy products was constructed on the basis of the first two stages at the third stage.To verify the three-stages distributed energy network thermal economics cost model,this paper an energy company in China as an example.This paper innovatively expands the application scope of the matrix cost model from a specific system or device to a distributed energy network,and introduces the energy quality coefficient and the exergy attenuation coefficient to improve the matrix cost model.Meanwhile this paper takes into account non-energy costs and expands the calculation scope of exergetic flow cost.The construction of a 3-stages progressive thermal economics cost model holds the cost allocation of final energy products as the main line,and a method of apportioning the main and auxiliary energy products is proposed for cost allocation of energy products to improve the traditional cost allocation method.Through calculation and comparison,this paper makes the conclusion that the calculation result of using the energy quality coefficient to improve the exergy cost and considering the main and auxiliary energy products to allocate the cost is closer to the actual value.