生活热水多种热源方式的选择分析

Analysis of a variety of domestic hot water heating methods

针对生活热水的多种热源方式进行节能和经济性分析。提出生活热水供热方式应考虑当地的能源条件及资源情况,集中生活热水系统需注意使用率和集中生活热水负荷特性导致的热损失和水泵电耗,并与单户方式相比较,集中生活热水供应方式的推广也应结合具体情况作谨慎分析。北方地区应优先选用热电联产为热源的城市热网集中供应生活热水,并鼓励采用电厂乏汽或工业余热回收技术以便进一步大幅度降低生活热水供应能耗。

Energy-saving and economic analysis was conducted for a variety of domestic hot wa- ter heating methods. Proposed domestic hot water heating method should consider local energy conditions and resources. Centralized domestic hot water system should pay attention to the utiliza- tion and centralized domestic hot water load characteristics due to heat loss and pump power con- sumption. Compared with single-family heating method, promotion of centralized domestic hot wa- ter supply should be carefully analyzed according to specific conditions. The northern China should prefer cogeneration as the heat source of urban heating network for centralized hot water supply, and encourage the use of power plant or industrial waste heat recovery technology for further sig- nificant reduction in the energy consumption of domestic hot water supply.