热电冷三联供系统中热水网参数的选择

Influence of Network Parameter on Primary Energy Consumption for Combined Heating, Cooling and Power System

结合北京第一热电厂、北京第二热电厂所属供热系统,分析在夏季具有冷负荷和生活热水负荷时,热网参数,即供/回水温度,对热电冷联供系统一次能耗的影响。

In a district heating and cooling system, i.e. the combined heating, cooling and power (CHCP) system of Beijing is studied here, high temperature water generated by two cogeneration plants circulates through a network between the plants and heat substations. At heat substations, supply water of high temperature from the network drives absorption chillers for air-conditioning in summer and satisfies space heating demands in winter or domestic hot water demands by heat exchangers in the whole year. The parameters, i.e. supply/return water temperature in the network, has a great impact on primary energy consumption (PEC) of the absorption chillers, circulation pumps and domestic hot water (DHW), which is studied in this paper.