Large Scale Modified Atmosphere Packaging with Heat and Mass Transport

建立了大型气调包装的数学模型。该模型包括氧气、二氧化碳、氮气的传质，包装产品呼吸热的传质和热传递，产品蒸腾潜热和包装内水蒸气冷凝的潜热传递，以及通过包装材料的传递热。在此数学模型的基础上，编制了包装外温湿度动态变化的模拟程序。利用该程序对计算结果进行了实验验证。

A mathematical model for large scale modified atmosphere packaging was developed. This model included mass transport for O2, CO2, N2, and water vapor and heat transport for respiration heat by packed product, latent heats by transpiration of the product and water vapor condensation in the package and transmission heat through the packaging material. The simulation program for dynamic change in temperature and humidity of outside the package was obtained based on the mathematical model. The computational results using the program were validated experimentally.