在储存期间有效冷却易腐食品的数值研究:番茄的案例
Audrey Demafo1,2, Abebe Geletu2, Pu Li3
1Department of Physics, College of Sciences and Technology, University of Rwanda, Kigali P.O. Box 4285, Rwanda.
Foods (Basel, Switzerland)
|July 29, 2025
概括
优化通风包装是保持农产品质量的关键. 这项研究模拟了不同通风设计中的空气流和冷却,以防止损坏.
科学领域:
- 农业工程 农业工程
- 食品科学 食品科学 食品科学
- 计算流体动力学的流体动力学.
背景情况:
- 温度监测对于农产品收获后的质量评估至关重要.
- 在通风包装中有效的温度控制可以防止像西红这样的易腐货物腐烂.
研究的目的:
- 研究通风设计对农产品包装内部空气流量和冷却性能的影响.
- 在不同的边界条件下比较不同通风配置的冷却效率.
主要方法:
- 采用建模和模拟方法来分析空气流动模式和温度分布.
- 评估了三种不同的通风配置 (单顶,单中间,两个通风口).
- 模拟了两个包装边界条件 (开放式和封闭式).
主要成果:
- 模拟显示了不同的通风设计和边界条件如何影响内部空气流的分布和速度.
- 该研究评估了由此产生的冷却性能和包装中的温度均性.
- 分析确定了最佳的通风策略,以提高冷却和质量保护.
结论:
- 通风设计显著影响通风包装中的空气流和冷却效率.
- 了解这些动态对于保持收获后农产品质量至关重要.
- 这些发现为设计有效的包装解决方案提供了洞察力,以尽量减少损坏.
相关概念视频
01:23Physical Methods for Controlling Microbial Growth: Temperature
251
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
251
02:45Responses to Heat and Cold Stress
13.9K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.9K
01:27Factors Influencing Microbial Growth: Temperature
199
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
199
02:28Effect of Temperature Change on Reaction Rate
4.3K
The Arrhenius equation,
4.3K
01:29Methods for Controlling Microbial Growth
496
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
496
02:11Effects of Temperature on Free Energy
26.0K
The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
26.0K