Uncertainty Analysis of the Experimental Results of Air Conditioner Performance due to Uncertainty of Equation of States

Howard Cheung, Jerome Frutiger, Ian H. Bell, Jens Abildskov, Gürkan Sin, Shengwei Wang

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

In previous literature, the uncertainty analyses of experimental results of air conditioners usually ignored the uncertainty due to the equation of state (EoS) of the refrigerants. One possible reason was that the uncertainty reported in the EoS literature was much smaller than the one of the measurement. However, with the advancement of the measurement technologies, the impact of measurement uncertainty on the air conditioner performance calculation is lowered and becomes on par with that of the EoS. Simultaneously, new research findings give more comprehensive understanding of the EoS uncertainties, such as that the uncertainty of EoS reported in previous studies was underestimated under some conditions. To examine if the uncertainty of experimental results of a thermal system are significantly affected by the new findings, an uncertainty analysis is carried out with experimental data of an air conditioner using propane. The results show that the uncertainty of EoS has a more significant impact on experimental results involving saturation temperature such as subcooling and superheat measurement than the uncertainties of the measurement, while its impact on the uncertainty of the measured heat transfer rate is still not as significant in most cases.
Original languageEnglish
Title of host publication17th International Refrigeration and Air Conditioning Conference at Purdue 2018
Number of pages10
PublisherRay W. Herrick Laboratories
Publication date2018
Article number2539
Publication statusPublished - 2018
Event17th International Refrigeration and Air Conditioning Conference at Purdue 2018 - Purdue University, Purdue, United States
Duration: 9 Jul 201812 Jul 2018

Conference

Conference17th International Refrigeration and Air Conditioning Conference at Purdue 2018
LocationPurdue University
Country/TerritoryUnited States
CityPurdue
Period09/07/201812/07/2018

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