Efficiency Analysis Of CCHP System Based On Biomass Mixed Coal

With the increasingly prominent contradiction between the shortage of global resources and the rapid economic development,the mode of operation and utilization of energy are facing a huge transformation,the comprehensive utilization and management of energy has gradually become the focus of scholars’ research.As a major component of China’s energy consumption,Researching in new way of generating systems and energy utilization with reducing the use of energy at the source is a great significance to alleviate the shortage of energy resources.This dissertation introduces the research status and system principle of cold,hot and power cogeneration system.Based on cogeneration system of CCHP,establishing a multi-objective evaluation system with considering various influencing factors including energy saving,economy and environmental protection.Analyzing energy efficiency for its systems.Furthermore,In order to determine the optimum mixing ratio of biomass,Analyzing different energy value indexes and exploring the influence of biomass mixture on the CCHP system from the angle of energy value.the results show as follows:Under the same load condition,the CCHP system can not only save the operating cost of the system,but also reduce the emissions of SOx,NOx,CO2 and other gases.It has good environmental and economic benefits.From the perspective of multi-objective evaluation indexes,DB values in the conventional CCHP system are ranked in order:the transition season>summer season>winter season.DB value of biomass CCHP system in order:summer season>winter season>the transition season.Biomass cogeneration systems has greater carbon dioxide emission reduction capabilities in terms of environmental benefits.From the perspective of energy value,In the three mixing proportion(5%、15%、20%).20%,more sustainable,is the best mixing ratio.the 20%mixture ratio can be selected to achieve greater energy utilization value in the process of energy utilization.