The Application Study Of Technical And Economic Analysis On Natural Gas Distributed Generation

The comprehensive efficiency of the natural gas distributed energy system(DES)could be up to 75~90% as to the benefit of energy cascade utilization.In addition,it is cleaner to environment.So developing natural gas DES is conducive to upgrade the structure of energy consumption in China and to improve the situation of air pollution,and can bring out huge economic benefits and social benefits.The technical and economic analysis can provide theoretical support for the government departments to make policy to develop DES and provide a reference for investors.This thesis evaluates the feasibility of the natural gas DESA according to the technology proposal and economic evaluation index(IRR).Firstly,the development status of natural gas DES and the relevant policies published by government departments are studied.Then,the thesis analyzes the feasibility from technical angle.The method is using the software(GT-PRO)computing technology index,including generation,heating capacity,emissions,consumption and efficiency of the unit.Next,to evaluate the profitability of the DES by calculating the IRR based on project investment estimation,income and cost.In addition,the sensitivity analysis of for DES is conducted.Natural gas prices,heating capacity,heating prices,investment costs and financing costs are chosen as factors.Finally,the paper takes a natural gas CCHP project in Shanghai as an example,carries out economic evaluation and sensitivity analysis,and verifies the feasibility of the DES.Furthermore,there is discussion about the control measures on the sensitivity factors by summarizing DES project experience.