摘要
本文提出一种适于夏热冬冷地区、采用能源总线进行区域能源规划的普遍方法。利用分布式变频水泵的水力解耦特性,通过冷、热线将多个冷(热)源和多个用户(楼宇)连接成能源网。在冷(热)源处采用制冷或供热设备控制总线供水温度,在用户处采用制冷机组和热泵等为用户提供冷水、热水或生活热水。该能源总线组态方式具有热力解耦能力,源和用户都可根据本地负荷变化灵活调整设备运行。本文建立了一整套水力、热力数学模型,用于规划冬季供暖且夏季供冷的区域供能场合,以实际案例说明了能源总线的区域能源规划的具体方法。结果表明:结合地源热泵、水源热泵及蒸气型溴化锂等供能设备,该方法具有良好的低品位能源利用率,在夏季和冬季的系统综合性能系数COP分别为3.85和3.17。
A general district-energy planning method that is suitable for hot summer and cold winter areas is proposed in this paper based on an energy bus system（ EBS）. In the proposed method,multiple thermal or cooling sources and users（ buildings） are connected together using warm and cool lines with distributed variable speed pumps（ DVSPs）. In the new EBS configuration,thermal devices are used to control the water supply temperature in the side of all sources,chillers and heat pumps installed in all users（ buildings） are used to provide space cooling,heating,and domestic hot water. Because of the simultaneously decoupled thermal features of the presented EBS configuration,both energy sources and users are capable of adjusting their thermal devices flexibly according to their own local loads. To demonstrate the new district energy planning method,a hydraulic and thermal model is developed,and a case study is illustrated in detail. The results show that combined with the ground source heat pump,water source heat pump,and steam-driven Li Br units,the given method has good efficiency in utilizing low-grade energy resources,with an integrated COP of 3. 85 in the summer and 3. 17 in the winter.
出处
《制冷学报》
CAS
CSCD
北大核心
2017年第4期50-58,109,共10页
Journal of Refrigeration
基金
国家重点基础研究发展计划(973计划
2014CB249201)资助项目~~
关键词
能源规划
区域供热/供冷
能源总线
分布式热泵
分布式变频水泵
energy planning
district heating/cooling
energy bus
distributed heat pump
distributed variable speed pump
