Effect of Shelf Aperture Ratio on the Temperature Distribution of an Open Refrigerated Display Cabinet
Source abstract
Abstract
(1) Background: With the development of cold chain logistics in recent years, the demand for refrigerated display cases has greatly increased in the home and commercial markets. However, the difference of temperature and humidity between each layer of refrigerated display cabinet is great, which affects the health of consumers. In order to reduce the temperature difference for each layer in a cabinet and to improve the temperature uniformity inside the cabinet, an open-hole shelf is designed according to the principle of aerodynamics. (2) Methods: The influence of different shelf aperture ratios on the periodic temperature fluctuation, average temperature, temperature non-uniformity coefficient, and temperature maintenance coefficient inside the cabinet is studied by means of experiments with pork. (3) Results: The results show that when the aperture ratio increases from 0% to 90%, the average maximum temperature in a single cycle in the cabinet shows a trend of first decreasing and then increasing. The minimum temperature difference in the cabinet is 4.3 °C, and the corresponding aperture ratio is 25%. (4) Conclusions: The results show that 25% is the optimal aperture ratio for a shelf in the refrigerated display cabinet. The results provide a better reference for optimization of the structure and temperature in an open refrigerated display cabinet.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Food Supply Chain Traceability · Refrigeration and Air Conditioning Technologies · Heat Transfer Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Guangdong Mechanical & Electrical Polytechnic, Guangzhou 510515, China
College of Engineering, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Institute of facility Agriculture, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China
South China Smart Agriculture Public Research & Development Center, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China
Funding
the Guangdong Provincial Agricultural Science and Technology Innovation and Extension Project · the Common Technical Innovation Team of Guangdong Province on Preservation and Logistics of Agricultural Products · Independent Research and Development Projects of Maoming Laboratory · the National Key R&D Program of China
References (29)
Show source-provided references
1. Research Progress on Open Refrigerated Display Cabinets
2. Numerical simulation of temperature distribution of food packages on open-type horizontal display cabinet
3. Honeycomb Design Optimization of Multi-deck Refrigerated Display Cabinet Using CFD Simulation
4. Influence of shelf’s length on performance of refrigerated display cabinet
5. The temperature and ages of packs of beef displayed in multi-shelf retail cabinets10.1016/S0956-7135(02)00058-0 ↗
6. Analysis of energy savings in a supermarket refrigeration System10.1016/j.apenergy.2012.02.043 ↗
7. The analysis and research on energy efficiency standards and energy-saving technology for commercial refrigerator
8. A mathematical model of air curtain and air flow and heat transfer in vertical multi-shelf display cabinet
9. A two-dimensional CFD model of a refrigerated display case
10. Effectiveness and optimum jet velocity for a plane jet air curtain used to restrict cold room infiltration10.1016/j.ijrefrig.2005.12.011 ↗
11. Numerical modelling and validation of the air flow maldistribution in the cooling duct of a horizontal display cabinet10.1016/j.applthermaleng.2015.04.032 ↗
12. Optimization of design parameters of air outlets for horizontal open food refrigerated display cabinets
13. The optimization and effect of back panel structure on the performance of refrigerated display cabinet10.1016/j.foodcont.2013.12.009 ↗
14. Temperature and energy performance of open refrigerated display cabinets using heat pipe shelve10.1016/j.egypro.2017.07.240 ↗
15. CFD comparisons of open type refrigerated display cabinets with without air guiding strips10.1016/j.egypro.2017.07.284 ↗
16. Li, W. (2016). Study on Cold Storage and Heat Transfer Characteristics of a Composite Shelf Filled with Phase Change Materials. [Ph.D. Thesis, Zhengzhou Institute of Light Industry].
17. Experimental study of heat transfer intensification by using a novel combined shelf in food refrigerated display cabinets (Experimental study of a novel cabinets)10.1016/j.applthermaleng.2008.10.003 ↗
18. CFD optimization of double air Curtain in vertical display cabinet
19. Axell, M., and Fahlen, P. (2003, January 17–22). Design Criteria for Energy Efficient Vertical Air Curtains in Display Cabinets. Proceedings of the 21st International Congress of Refrigeration, Washington, DC, USA.
20. Guo, Y., and Lu, S. (2016). Introduction to Fluid Mechanics, Science Press.
21. Current status and development trend of cold chain logistics for pork of Hangzhou
22. The economic impacts of recent pork price increase in China caused by the African swine fever
23. SWOT analysis of imported meat cold chain logistics development environment in Xi’an international land port
24. Optimization of cold-plate location in refrigerated vehicles based on simulation and test of no-load temperature field
25. Numerical simulation and experimental verification of temperature and humidity in centralized ventilated delivery pigsty
26. Influence of operating conditions on the temperature performance of a closed refrigerated display cabinet10.1016/j.ijrefrig.2019.03.031 ↗
27. Evans, J.A., and Swain MV, L. (2010, January 29–31). Performance of retail and commercial refrigeration systems. Proceedings of the IIR International Cold Chain Conference, Cambridge, UK.
28. Experimental study of heat transfer and air flow in a refrigerated display cabinet10.1016/j.jfoodeng.2012.05.027 ↗
29. Detailed CFD modelling of open refrigerated display cabinets