关键词: 冷热电三联供, 一次能源消耗量, 二氧化碳排放量, 运行成本, 运行策略

Abstract: The simplex method was used to optimize the operation strategy of the combined cooling heating and power (CCHP) system under typical loads of winter and summer days when the system was used in office buildings, the optimization goals were smallest primary energy consumption, lowest running costs and lowest carbon dioxide emissions. The CCHP system was compared with the traditional system. For different optimization goals, a different operation strategy was adopted. In winter, when smallest primary energy consumption was taken as optimization goal, in more time the system ran with the mode of heating deciding power. When lowest running costs or lowest carbon dioxide emissions was taken as optimization goal, all day the system ran with the mode of power deciding heating. When the minimum of the three indicators combined was taken as optimization goal, in more time the system ran with the mode of heating deciding power. In summer, when smallest primary energy consumption was taken as optimization goal, the traditional system was better than the CCHP system. When lowest running costs or lowest carbon dioxide emission was taken as optimization goal, all day the system ran with the mode of power deciding cooling. When the minimum of the three indicators combined was taken as optimization goal, in more time the system ran with the mode of cooling deciding power.

Key words: combined cooling heating and power(CCHP) system, primary energy consumption, carbon dioxide emissions, running costs, operating strategy