The Configuration Research On The New Energy Supply System Based On Gas-steam Combined Cycle Power Plant

Gas-steam combined cycle is the model of cascade utilization of energy,therefore,in the field of solving the problems of heating,improving energy structure and alleviating environmental pressure,to explore reasonable application model of gas has become a hot spot in the field of energy supply technology research.According to the thermodynamic analyses,in order to fully explore the advantages and the potential of gas-steam combined cycle system,a new energy supply system process was built,in the meantime,the new energy station was put forward,which can achieve the double funcition of the new energy supply system.The return temperature of heat network is decreased to explore the improvement direction of the system performance.Taking the power plant in Tongzhou Canal District as research objective,the theoretical research results in this paper are applied to verify the application of the proposed new system.The conclusions are as follows: In winter condition,a large-temperature difference heat-exchange unit is set at the heat network station,while the cascade heating process of heat network waterg process is built at the power plant;in summer condition,the absorption large-temperature difference heat-exchange unit is transferred to the refrigeration condition,which can achieve the technology requirements for the usage of waste heat to suplly heat in winter and the usage of heat to drive concentrated refrigeration in summer.Combining the power and heat,the new energy station composes of compression type and absorption type large-temperature heat exchange/refrigeration units.Decreasing the return-temperature of heat network is beneficial to the increase of the system integrated energy efficiency.The formulation of the integrated process for the new enengy supply system for the the power plant in Tongzhou Canal District is demonstrated to be energy saving and feasible.