摘要
双源供暖(空调)系统是天然气在供暖(空调)方面高效利用的方法之一。对以天然气为燃料的双源供暖(空调)系统的特性研究,采用以供热指数和当量热力系数作为该系统热经济性评价指标并建立数学模型,在此基础上对影响该系统热经济性能评价指标的各参数进行了分析;根据系统能量流程并结合具体设备提出了5种双源供暖(空调)系统方案,计算了该5种方案和多种传统供热、制冷方案的供热指数和当量热力系数并进行了分析。建立了基于污染物SO2、NOx、CO2和粉尘的排放减少量作为指标的环保性能评价数学模型,以此来评价天然气为燃料的双源供暖(空调)系统环保性能的优劣。结合具体案例对该系统和传统典型供热、制冷系统进行了环保性能指标的对比计算。综合分析,该系统无论在热经济性方面还是在环保性方面都比传统典型供热、制冷方式优越。
The natural gas dual-source heating/air conditioning system (NG-DH/ACS) is one of efficient means for taking good use of natural gas for heaters or air conditioners. Based on analysis on the basic principles of NG-DH/ACS,a mathematical model is built up taking the heating index and the equivalent thermodynamic coefficient as the thermo-economic evaluation index,and each parameter which has effects on those thermo-economic evaluation indices is analyzed as well. According to energy flow of the system and relating to specific equipments,five schemes of NG-DH/ACS are proposed. The diversified heating indices and the equivalent thermodynamic coefficient are calculated and analyzed with comparison. Another mathematical model is set up which is for evaluating the system's environmentally-friendly performance indicated by the reduction of emission of SO2,NOx,CO2,and dust,and the environmentally-friendly performance index of this NG-DH/ACS is analyzed and calculated in many cases of study. Through comprehensive analysis,this paper concludes that this system is superior to the traditional heating/AC system both in thermo-economic and environmentally-friendly performance.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第12期95-97,109,共4页
Natural Gas Industry
基金
国家自然科学基金(编号:50476069)
教育部科学技术研究重大项目(编号:306004)的资助
关键词
热力系统
天然气
空气调节
热效率
环境保护
性能
综合评价
thermo-dynamic system,natural gas,air conditioning,economic evaluation,environmental protection,performance,comprehensive evaluation
