Siyao Sui
ABSTRACT
Experiments were carried out to verify the design for loquat precooling, including the air supply velocity, the shape of air vents and the piling of cartons, so as to create valuable theoretical reference. Five-layer corrugated cartons for loquats were used in the study, and the methodologies adopted include computational fluid dynamics, unsteady shear pressure and the SST k-ω model. Under the same initial conditions and boundary conditions, different parameters were compared in theory and verified through experiment, including temperature field distribution among multiple rows of cartons, cooling time, average rate of cooling and uniformity. Results: the temperature changes observed in experiments tally with modeling results, which validates the theoretical model. The precooling of multiple rows of loquat cartons is not a simple superposition of multiple cooling processes for cartons positioned in one row. 2.5m/s is an ideal rate of air supply velocity. For multiple rows of cartons, circle vents would improve the uniformity, while runway circle vents induce hot spots. Therefore, for loquat precooling, it is highly recommended to use flat cartons with circle vents and to position the cartons in less rows.
- Wang Y, Shan Y, Chen J, Comparison of practical methods for postharvest preservation of loquat fruit[J]. Postharvest Biology and Technology, 2016, 120: 121–6.Google Scholar
Cross Ref
- Song H, Yuan W, Jin P, Effects of chitosan/nano-silica on postharvest quality and antioxidant capacity of loquat fruit during cold storage[J]. Postharvest Biology and Technology, 2016,119: 41–8.Google ScholarCross Ref
- Yan J, Song Y, Li J, Forced-air precooling treatment enhanced antioxidant capacities of apricots[J]. Journal of Food Processing and Preservation, 2018, 42(1): 1–7.Google ScholarCross Ref
- Mercier S, Brecht J K, Uysal I. Commercial forced-air precooling of strawberries: A temperature distribution and correlation study[J]. Journal of Food Engineering, 2019, 242: 47–54.Google ScholarCross Ref
- Mukama M, Ambaw A, Berry T M, Energy usage of forced air precooling of pomegranate fruit inside ventilated cartons[J]. Journal of Food Engineering, 2017, 215: 126–33.Google ScholarCross Ref
- Ngcobo M E K, Delele M A, Opara U L, Resistance to airflow and cooling patterns through multi-scale packaging of table grapes[J]. International Journal of Refrigeration, 2012, 35(2): 445–52.Google ScholarCross Ref
- Vigneault C, Goyette B, de Castro L R. Maximum slat width for cooling efficiency of horticultural produce in wooden crates[J]. Postharvest Biology and Technology, 2006, 40(3): 308–13.Google ScholarCross Ref
- Kumar R, Kumar A, Narayana M U. Heat transfer during forced air precooling of perishable food products[J]. Biosystems Engineering, 2008, 99(2): 228–33.Google ScholarCross Ref
- Vigneault C, de Castro L R. Produce-simulator property evaluation for indirect airflow distribution measurement through horticultural crop package[J]. Journal of Food, Agriculture & Environment, 2005, 3(2): 67–72.Google Scholar
- De Castro L R, Vigneault C, Cortez L A. Cooling performance of horticultural produce in containers with peripheral openings[J]. Postharvest Biology and Technology, 2005, 38(3): 254–61.Google ScholarCross Ref
- Wu W, Cronjé P, Nicolai B, Virtual cold chain method to model the postharvest temperature history and quality evolution of fresh fruit – A case study for citrus fruit packed in a single carton[J]. Computers and Electronics in Agriculture, 2018, 144:199–208.Google ScholarCross Ref
- Wu W, Häller P, Cronjé P, Full-scale experiments in forced-air precoolers for citrus fruit: Impact of packaging design and fruit size on cooling rate and heterogeneity[J]. Biosystems Engineering, 2018, 169: 115–25.Google ScholarCross Ref
- Tian S, Barigou M. Using chaotic advection to enhance the continuous heat-hold-cool sterilisation process[J]. Innovative Food Science and Emerging Technologies, 2016, 34: 352–66.Google ScholarCross Ref
- O'Sullivan J, Ferrua M J, Love R, Modelling the forced-air cooling mechanisms and performance of polylined horticultural produce[J]. Postharvest Biology and Technology, 2016, 120: 23–35.Google ScholarCross Ref
- Wu W, Defraeye T. Identifying heterogeneities in cooling and quality evolution for a pallet of packed fresh fruit by using virtual cold chains[J]. Applied Thermal Engineering, 2018, 133: 407–17.Google ScholarCross Ref
- Ambaw A, Delele M A, Defraeye T, The use of CFD to characterize and design post-harvest storage facilities: Past, present and future[J]. Computers and Electronics in Agriculture, 2013, 93: 184–94.Google ScholarDigital Library
- Han J, Zhao C, Qian J, Numerical modeling of forced-air cooling of palletized apple: Integral evaluation of cooling efficiency[J]. International Journal of Refrigeration, 2018, 89: 131–41.Google ScholarCross Ref
- Defraeye T, Lambrecht R, Tsige A A, Forced-convective cooling of citrus fruit: Package design[J]. Journal of Food Engineering, 2013, 118(1): 8–18.Google ScholarCross Ref
- Ambaw A, Mukama M, Opara U L. Analysis of the effects of package design on the rate and uniformity of cooling of stacked pomegranates: Numerical and experimental studies[J]. Computers and Electronics in Agriculture, 2017, 136: 13–24.Google ScholarDigital Library
- Gruyters W, Verboven P, Diels E, Modelling cooling of packaged fruit using 3D shape models[J]. Food and Bioprocess Technology, 2018, 11(11): 2008–20.Google ScholarCross Ref
- Dehghannya J, Ngadi M, Vigneault C. Transport phenomena modelling during produce cooling for optimal package design: Thermal sensitivity analysis[J]. Biosystems Engineering, 2012, 111(3): 315–24.Google ScholarCross Ref
- Lu L, Chen X, Wang J. Modelling and Thermal Analysis of Tray-layered Fruits inside Ventilated Packages during Forced-air Precooling[J]. Packaging and Technology and Science, 2013, 29: 399–412.Google Scholar
- Han J, Park J M. Finite element analysis of vent/hand hole designs for corrugated fibreboard boxes[J]. Packaging Technology and Science, 2007: 39–47.Google Scholar
- Delele M A, Ngcobo M E K, Getahun S T, Studying airflow and heat transfer characteristics of a horticultural produce packaging system using a 3-D CFD model. Part I: Model development and validation[J]. Postharvest Biology and Technology, 2013, 86: 536–45.Google ScholarCross Ref
- Zhao C J, Han J W, Yang X T, A review of computational fluid dynamics for forced-air cooling process[J]. Applied Energy, 2016, 168: 314–31.Google ScholarCross Ref
- Pathare P B, Opara U L, Vigneault C, Design of Packaging Vents for Cooling Fresh Horticultural Produce[J]. Food and Bioprocess Technology, 2012, 5(6): 2031–45.Google ScholarCross Ref
- Fallis A. Turbulence modelling for CFD[J]. Journal of Chemical Information and Modeling, 2013, 53(9): 1689–99.Google Scholar
- Han J W, BadÍa-melis R, Yang X T, CFD simulation of airflow and heat transfer during forced-air precooling of apples[J]. Journal of Food Process Engineering, 2017, 40(2): 1–11.Google ScholarCross Ref
- Defraeye T, Verboven P, Opara U L, Feasibility of ambient loading of citrus fruit into refrigerated containers for cooling during marine transport[J]. Biosystems Engineering, 2015, 134(0):20–30.Google ScholarCross Ref
- Han J W, Zhao C J, Yang X T, Computational modeling of airflow and heat transfer in a vented box during cooling: Optimal package design[J]. Applied Thermal Engineering, 2015, 91: 883–93.Google ScholarCross Ref
Index Terms
- Modeling and Simulation of Temperature Fields in the Process of Pressure-Difference Precooling of Loquats in Multiple Rows of Cartons
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