摘要
为了满足寒冷地区的供热需求,提出一种火电厂采用大型压缩式空气源热泵的供热系统。通过Aspen Plus模拟两级压缩式空气源热泵的运行性能,获得热泵性能系数COP随着环境温度的变化趋势,优化了低压、高压工质压缩比和质量流量比,提出了不同环境温度下热泵的最佳运行参数。以2×300 MW火电机组为例进行供热能力、能量利用效率和经济性分析,采用热电联产结合大型压缩式空气源热泵的供热系统,供热面积可达到4 000万m^(2),供热能力提升130%,能量利用系数达到1.33,供热成本60.36元/GJ。
In order to meet the heating demand in cold areas in winter, the thermal power plant using a large-scale compressed air source heat pump heating system was proposed. The running performance of the two-stage compressed air source heat pump was simulated by Aspen Plus, and the trend of the heat pump COP with the ambient temperature was obtained. Taking the 2 × 300 MW unit as an example for heating capacity, energy utilization efficiency and economic analysis, the heating area reached 40 million square meters, heating capacity increased by 130%, energy utilization factor reached 1.33, heating cost about 60.36 yuan/GJ.
作者
赵耀华
周托
黄智
王琼
ZHAO Yao-hua;ZHOU Tuo;HUANG Zhi;WANG Qiong
出处
《节能》
2020年第12期49-53,共5页
Energy Conservation
基金
山西省科技重大专项资助项目(项目编号:20181102001)。
关键词
供热系统
空气源热泵
两级压缩
COP
heating system
air source heat pump
two-stage compression
coefficient of performance
