A low-cost controlled atmosphere storage system was designed and constructed based on the principle of steady state diffusion. The system was developed from a 100 x 75 x 60 cm PVC container. By using Fick's law of diffusion, it was provided with two diffusion channels, one for oxygen equilibrium and the other for carbon dioxide. The relative humidity was controlled by means of a saturated solution contained in a channel especially designed for that purpose as well as to provide a good airtight operation. The main objective was to establish a dynamic equilibrium between the rate of respiration of the produce and the rate of diffusion of gases in and out of the system, thus permitting the control of these gases throughout the storage period. Lettuce was used for testing the CA container under a pre-established atmosphere of 3.5 O_2 and 0.5 CO_2. Results showed that the container can be used to provide controlled atmospheres low-cost conditions for perishable products.
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机译：基于稳态扩散原理，设计并构建了一种低成本的可控气氛储存系统。该系统由一个 100 x 75 x 60 厘米的 PVC 容器开发而成。通过使用菲克扩散定律，它提供了两个扩散通道，一个用于氧平衡，另一个用于二氧化碳。相对湿度通过专门为此目的设计的通道中所含的饱和溶液来控制，并提供良好的气密操作。主要目标是在产品的呼吸速率和气体进出系统的扩散速率之间建立动态平衡，从而允许在整个储存期间控制这些气体。莴苣用于在3.5%O_2和0.5%CO_2的预先建立的气氛下测试CA容器。结果表明，该容器可用于为易腐产品提供低成本的可控气氛条件。
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