Abstract Alaska pollock (AP) surimi paste was prepared (0–3% salt and 76–84% moisture). The density, specific heat, and thermal conductivity were measured and modelled in temperatures between 25 and 90 °C (R2 > 0.92). The thermal diffusivity (α) function showed a strong dependence on the moisture content and a unique salt dependence at 84% of the moisture content and applied to the heat transfer simulation of surimi paste. The simulation model coupled with the empirical thermal properties accurately predicted the heat penetration curves during heating with RMSE values ranging from 0.43 to 1.22 °C. The salt dependence on thermal diffusivity was identified and modeled only at 84% moisture content. With a model for 84% moisture content, the RMSE value of 3% salt content decreased from 1.11 °C to 0.56 °C. This study demonstrated that an accurate prediction of the heat transfer of the surimi paste needs to be coupled with the nonlinear thermal diffusivity functions.

中文翻译：

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通过估计各种水分和盐分的热扩散率，开发阿拉斯加狭鳕鱼糜糊的准确传热模拟模型

摘要 制备了阿拉斯加狭鳕 (AP) 鱼糜糊（0–3% 盐和 76–84% 水分）。密度、比热和热导率在 25 到 90 °C (R2 > 0.92) 之间的温度下进行测量和建模。热扩散系数 (α) 函数表现出对水分含量的强烈依赖性，并且在 84% 的水分含量下表现出独特的盐依赖性，并应用于鱼糜糊的传热模拟。仿真模型与经验热特性相结合，准确预测了加热过程中的热渗透曲线，RMSE 值范围为 0.43 至 1.22 °C。盐对热扩散率的依赖性仅在 84% 的水分含量下被识别和建模。对于 84% 水分含量的模型，3% 盐含量的 RMSE 值从 1.11 °C 下降到 0.56 °C。