北方冬季供暖技术的评价与选择

Evaluation and selection of supply heating methods in northern winter

从我国大气污染和煤炭、电力产能过剩背景出发对北方冬季供暖技术进行评价和比较,基于热力学方法,从综合能源利用效率、火用效率和能量转化效率指标逐层解析,热电联产和热泵技术能量转化效率显著优于燃料直接燃烧的供暖技术,应用可逆循环火用守恒方法进一步解释了热电联产和热泵技术能量转化效率高的热力学原因和巨大的节能潜力。结合供暖方式的经济性比较,提出供暖行业"煤基是基础,电基是协同,气基是调峰"的技术发展路线。

Basing upon background of pollution and power overcapacity,the authors evaluated and compared the supply heating methods in northern winter.According to analysis of comprehensive energy utilization efficiency,and energy efficiency and energy conversion efficiency indexed,the results showed that the energy conversion efficiency from combined heat and power(CHP)and heat pump had a significant advantage of thermodynamic performance and tremendous potential of energy saving over direct fuel combustion,and the thermodynamical reasons were revealed through exergy conservation analysis of reversible heating system.Combining with economical efficiency of supply heating method,the authors provided technical developing route of coal is basis,power is synergy,gas is peaking iss.