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利用1985—2015年气温资料计算了南充热/冷度日(HDD/CDD)及其建筑物单位面积耗电量,分析了度日和能耗的变化特征及其与气温的关系.结果表明,南充平均月HDD以1月最大(354.70℃·d),7—8月为0℃·d,平均年HDD为1 308℃·d;CDD以8月最大(67.17℃·d),11月至次年3月为0℃·d,平均年CDD为163℃·d;CDD和单位建筑面积的制冷耗电量与气温三者存在正相位关系,均呈上升趋势,其中CDD的突变时间是2006年,而HDD则表现出反相位的下降趋势,突变发生于1998年;HDD年变化趋势比CDD更明显,表明在气候变暖特别是冬季明显增温背景下,南充冷季采暖能耗在减少,而夏季制冷能耗在增加。
Based on the air temperature data from 1985 to 2015, the heat / coldness days (HDD / CDD) and the energy consumption per unit area of the buildings in Nanchong were calculated, and the relationship between the daily temperature and energy consumption and temperature was analyzed. The average monthly HDD in Nanchong was the highest in January (354.70 ℃ · d), and the average annual HDD was 1 308 ℃ · d in July-August. The average annual HDD was 1 308 ℃ · d in August. The maximum CDD in August was 67.17 ℃ · d, The average annual CDD was 163 ℃ · d in March and the average annual CDD was 163 ℃ · d in March next year. There was a positive phase relationship between the CDD and the unit area of the building, and the temperature showed a positive trend, with the CDD mutation time being 2006 Year, while the HDD showed a downward trend of anti-phase, the mutation occurred in 1998; HDD annual change trend is more obvious than CDD, indicating that in the context of climate warming, especially in winter significantly warming, Nanchong cold season heating energy consumption in Reduce, and summer cooling energy consumption is increasing.