基于相似日法的空调系统节能改造节能量计算方法
Energy saving calculation method of air conditioning system energy saving retrofit based on similar day method
摘要：
计算空调系统节能改造节能量时，常用的计算方法为相似日法。相似日法对室内冷负荷和室外温度都有苛刻的要求，通常要求改造前后的日累计冷负荷和平均温度之差均小于3%。实际运行时一个月中可能出现多个相似日，并且不同相似日的节能量相差较大，有时候甚至会出现没有相似日的情况，给节能量计算带来了困难，阻碍了节能事业的发展。提出了一种基于多元回归的节能量计算方法，用多个项目的实测数据验证了该方法的正确性，解决了一个月中没有相似日或者有多个相似日的节能量计算问题。
Abstract：
Similar day method is usually used to calculate energy saving amount of air conditioning system retrofit. It has stringent requirements on the indoor cooling load and outdoor temperature, requiring less than 3% of daily cumulative cooling load and average temperature difference before and after energy retrofit. There are multiple similar days in actual operation, and the amount in energy saving of different similar days varies greatly, sometimes there will be even not similar day, resulting many problems for energy saving calculation and hindering the development of energy industry. Presents a method of energy saving calculation based on multivariate regression analysis, verifies the correctness of this method based on measured data of multiple projects, solving the problems of having multiple similar days or no similar day in a month in calculating energy saving.
Keywords:airconditioningsystem,energysavingretrofit,similarday,energysavingamount,multipleregression