The white paper details a total of five uncertainties that can occur during the measurement process. In addition to errors in measuring instruments, it looks at both uncertainties in the reproducibility of tests in different laboratories and in the manufacture of compressors. Moreover, the document also highlights the uncertainties in performance prognosis as well as the difference between nominal and test conditions.
The Association of European Refrigeration Compressor and Controls Manufacturers (ASERCOM) was founded in 1992, and has meanwhile developed into the Association of European Refrigeration Component Manufacturers. It groups ten major manufacturers of compressors, and twenty manufacturers and associations dealing with refrigerant components and equipment. Asercom acts as a platform that has an enviable track record for dealing with scientific and technical topics. It has developed certification processes for compressors and condensing units.
The Asercom know-how can be found in the guidelines they have developed:
- Guidelines for the design of multiple compressor racks using frequency inverters
- Refrigerant glide effect on performances declarations
- Recommendations for using frequency inverters with positive displacement for refrigerant compressors
White paper on tolerances and uncertainties
Asercom, in close cooperation with the American association AHRI, has published this white paper on tolerances and uncertainties of performance data for refrigerant compressors.
This paper discusses five major compressor performance uncertainties:
- Measurement error in instruments used in compressor performance testing
- Lab to lab testing reproducibility uncertainty
- Manufacturing uncertainty
- Performance prediction
- Tested vs rated condition uncertainty
Manufacturers that make use of refrigerant compressors in their equipment can be recommended to make use of the information available within Asercom.
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