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针对氨气制冷系统当前的系统能效评价研究现状,提出了一种二维能效评价矩阵模型,在此基础上,结合当前常用的层次-模糊评价和信息熵评价方法的优缺点,提出了组合权重的评价方法.该方法运用最小二乘法确定联合使用层次分析和信息熵后的组合权重.通过实例对比验证,该方法具有更高的准确性,与系统的实际能效比变化趋势更一致,线性度高.该方法可实现系统的能效状态及时判断,通过调整参数可实现系统的运行更优化,减少无谓能耗.
Aiming at the current research status of energy efficiency evaluation of ammonia refrigeration system, a two-dimensional energy efficiency evaluation matrix model is proposed. Based on this, combined with the advantages and disadvantages of the current commonly used hierarchy-fuzzy evaluation and information entropy evaluation methods, This method uses the least square method to determine the combined weights of the combined use of AHP and information entropy.Through the comparison of examples, this method has higher accuracy and is more consistent with the change trend of the actual energy efficiency of the system, and the linearity The method can realize the timely judgment of the energy efficiency status of the system, and the parameters of the system can be used to optimize the operation of the system and reduce the unnecessary energy consumption.