华电技术 ›› 2018, Vol. 40 ›› Issue (7): 74-76.

• 新能源 • 上一篇    

楼宇式天然气分布式能源系统年均综合能源利用效率提升方案

  

  1. 1.中国华电科工集团有限公司,北京〓100160;2.华电分布式能源工程技术有限公司,北京〓100160
  • 出版日期:2018-07-25 发布日期:2018-08-24

Annual energy utilization efficiency improvement scheme for buildingtype natural gas distributed energy system

  1. 1.China Huadian Science and Technology Group Company Limited, Beijing 100160, China; 2.Huadian Distributed Energy Engineering Technology Company Limited, Beijing 100160, China
  • Online:2018-07-25 Published:2018-08-24

摘要:

受溴化锂溶液质量浓度特性及腐蚀性的影响,楼宇式分布式能源系统烟气热水溴化锂机组在夏季制冷工况下排烟温度不能低于160℃。为降低系统的排烟温度,提出在溴化锂机组排烟出口设置烟气热水换热器,制取生活热水外供和增加热水流量进入溴化锂机组制冷的2种方案。以某分布式能源系统工程为例,计算2种方案的年均综合能源利用效率,结果显示,设置烟气热水换热器后可以降低系统排烟温度,大幅度提高年均综合能源利用效率。

关键词:

Abstract:

Due to the influence of mass concentration characteristics and corrosivity of lithium bromide solution, the exhaust gas temperature of the flue gas hot water lithium bromide unit of buildingtype distributed energy system cannot be lower than 160℃ during cooling period in summer. In order to reduce the exhaust gas temperature of the system, it proposes 2 schemes which are setting up a flue gas hot water heat exchanger at the exhaust outlet of the lithium bromide unit and providing domestic hot water externally, or increasing hot water flow that flow into the lithium bromide unit. Taking a distributed energy system project as an example, the annual average energy utilization efficiency of the 2 schemes are calculated and the results show that setting up flue gas hot water heat exchanger can reduce the system exhaust gas temperature, and greatly improve the annual average energy utilization efficiency.

Key words: