E3S Web Conf.
Volume 100, 201911th Conference on Interdisciplinary Problems in Environmental Protection and Engineering EKO-DOK 2019
|Number of page(s)||9|
|Published online||10 June 2019|
Analysis of operating conditions of a cooling installation with carbon dioxide
AGH University of Science and Technology, Department of Thermal an Fluid Flow Machines, Krakow, Poland
* Corresponding author: email@example.com
In response to international regulations, natural refrigerants
such as carbon dioxide are more and more frequently used in the refrigeration industry. Due to thermodynamic properties, R-744 is used in the transcritical cycle as an individual refrigerant. In the hereby article, high pressure of CO2 and air temperature values were analysed. The measurements were conducted on the gas cooler side and involved external air temperature values in the summer period between 1 June to 30 September 2018. The “Booster” installation was used in one of Polish supermarkets. Correlations required to determine the optimal pressure of carbon dioxide depending on ambient temperature were presented in the article. The equations presented hereby allowed to maximize the energy efficiency ratio. An optimal high pressure for one of the correlations from literature was calculated on the basis of the measurement of ambient temperature. Actual and optimal pressure values of carbon dioxide were compared in the analysed period of time.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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