แบบจำ�ลองทางอุณหพลศาสตร์ของกระบวนการทำ�ความเย็นในการผลิตน้ำ�แข็งหลอด (Thai)
In: Journal of Science & Technology MSU, Jg. 43 (2024), Heft 1, S. 25-37
academicJournal
Zugriff:
This research article proposes a thermodynamic model of a freezing process in a tube ice-making machine to determine process time and cooling load throughout the freezing process. Nowadays, for production of tube ice to the required thickness, a tube ice-making machine will set the freezing process time to be constant in every production cycle under only one feed water temperature. However, our experiments found that the actual thickness of the tube ice produced was not as required because the feed water temperature deviated in response to two factors. - (1) the ambient temperature and (2) the reduction in the feed water temperature at the heat exchanger using the chilled water from the defrost process of production cycle ago for energy saving. Moreover, the prediction of cooling load from earlier research models lacked consideration of the water temperature decrease period, which tends to be the maximum cooling load. The results of this research revealed that simulation predicts the process's time of the freezing process with 15.18% accuracy compared to past research. The maximum cooling load occurred during the water temperature decrease period, then kept decreasing until the end of the tube ice-making period due to the temperature difference between the water and the refrigerant and the thermal resistance of tube ice from increasing thickness. This cooling load has a known evaporation rate of the refrigerant throughout the freezing process, which is the main result that guides the determination of the refrigerant suction rate of a compressor suitable for the tube ice-making machine. [ABSTRACT FROM AUTHOR]
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Titel: |
แบบจำ�ลองทางอุณหพลศาสตร์ของกระบวนการทำ�ความเย็นในการผลิตน้ำ�แข็งหลอด (Thai)
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Autor/in / Beteiligte Person: | พันวอ, กมลวิสิทธิ์ ; และ ธีระชาติ พรพิบูลย์ |
Zeitschrift: | Journal of Science & Technology MSU, Jg. 43 (2024), Heft 1, S. 25-37 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1686-9664 (print) |
Sonstiges: |
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