固液混装罐头食品固体中心冷点温度预测

Estimating The Central Temperatures in Solid of Canned Food Mixed with Solid and Liquid

本文探索了固液混装罐头食品的传热特性。应用CS—2型温度信息处理机测定了固液混装罐头食品的固体和汤汁中心冷点温度值。编了计算机程序,计算传热过程的参数j,f值。建立一系列的固体和汤汁冷点处的传热方程和确立罐头食品的固液传热比方程,可预测固体中心温度值,百分误差在允许范围内。本文提出的方法是一种较理想的预测固体中心温度方法,可供制订合理杀菌工艺条件之用。

Thermal characteristics of canned food mixed with solid and liquid have been discussed. The central temperatures in solid and liquid of canned food are measured by type CS-2 temperature information processor. A computer program has been developed for calculating thermal parameters j and f values which are used to describe thermal process. Therefore, a groupof heating curve equations of solid and liquid of canned food are established. Reduced equation of both solid and liquid equations are also established. So are central temperatures in solid can be estimated by these equations. Percent error of estimated values of the central temperatures in solid is smaller. So a better method about estimating the central temperatures in solid has been developed in this paper. A proper thermal schedule can be established in the canned food factories.