Abstract
In the evaluation of the energy use efficiency of the existing large air conditioners, the problems of low accuracy and high time cost are presented. The structure and movement mechanism of air conditioners in large buildings are analysed to obtain efficiency evaluation results. The covariance matrix was used to obtain the evaluation index of energy utilisation potency in air conditioners. Through proportion of influencing factors, the function relationship between indoor temperature change and cooling load change was determined based on the distribution of cooling load in large buildings. The entropy weight-cloud evaluation model was built to complete the evaluation and analysis of utilisation potency. Through comparative analysis, we can see that error of energy evaluation for air conditioner is less than 3%, and that need time cost is small.
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