Summary
In this study. an ammonia refrigeration room was selected as a typical scenario. Computational fluid dynamics (CFD) was applied to study the rules of the ammonia-Ieakage diffusion. The ammonia-Ieakage diffusion in a refrigeration room with up-down ventilation
and without ventilation was numerically simulated using the Fluent CFD software package. The ammonia concentrations in the longitudinal profile and the cross-section of the refrigeration room were analyzed at different times after the ammonia leakage. The numerical simulation results show that the ammonia concentration increases with height in the refrigeration room. and a lower fresh-air inlet can quickly decrease the ammonia concentration. Based on the above results. it is proposed that an ammonia-gas alarm should be installed near the ceiling to detect the leakage. and an emergency exhaust inlet should be installed near the floor to decrease the ammonia concentration.
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Details
- Original title: [In Chinese. / En chinois.]
- Record ID : 30024003
- Languages: Chinese
- Source: Journal of Refrigeration - vol. 38 - n. 6
- Publication date: 2017/12
- DOI: http://dx.doi.org/10.3969/j.issn.0253-4339.2017.06.012
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- Date : 2019/11
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- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 107
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- Author(s) : FEDASZ A., MAGNOWSKA M.
- Date : 1988
- Languages : Polish
- Source: Chlodnictwo - vol. 23 - n. 11
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Energy performances of low charge NH3 systems i...
- Author(s) : JENSEN S. S.
- Date : 2016/04/07
- Languages : English
- Source: 4th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Auckland, New Zealand, April 7-9, 2016.
- Formats : PDF
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Energy performance of low charge NH3...
- Author(s) : JENSEN S. S.
- Date : 2017/05/11
- Languages : English
- Source: 7th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, May 11-13, 2017.
- Formats : PDF
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Low-charge ammonia technology in North Ameriva,...
- Author(s) : SKACANOVA K., HAMILTON D., DUSEK J.
- Date : 2018/04/06
- Languages : English
- Source: 5th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Beijing, Chine, 6-8 avril 2018
- Formats : PDF
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