کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
787612 | 1466483 | 2007 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: An overall performance index for characterizing the economic impact of faults in direct expansion cooling equipment An overall performance index for characterizing the economic impact of faults in direct expansion cooling equipment](/preview/png/787612.png)
Air conditioning is a non-critical application for fault detection and diagnosis (FDD) where decisions about servicing faults should involve the use of economics. Existing methods for evaluating impacts of faults on equipment performance only consider some individual factors such as the equipment coefficient of performance (COP) or cooling capacity. This paper develops an overall economic performance degradation index (EPDI) for air conditioning equipment that includes the combined effects of degradations in COP, cooling capacity, and sensible heat ratio (SHR). EPDI quantifies the performance degradation caused by faults based on economics so it can be used as part of the decision making process in an overall FDD system. Furthermore, EPDI can be used along with estimates of typical field performance degradations to assess the economic benefits associated with the application of automated FDD. A case study is presented where EPDI was applied to measurements for an existing unit where faults were artificially introduced.
Journal: International Journal of Refrigeration - Volume 30, Issue 2, March 2007, Pages 299–310