English to Spanish Tech/Engineering Chemistry; Chem Sci/Eng heat penetration in packaged food

Complex heating profiles. Gillespy (1953) developed a method of process determination for cases where the heating profile was time-dependent, e.g. linear or exponential. Relatively little use has been made of this method, although it was used to determine processes in the heating and cooling legs of hydrostatic cookers, at a time when it was believed that the temperature gradients in the legs were linear functions of time. It has subsequently been shown that the conditions are somewhat different. The method is applicable to packs which have a slow `come-up', e.g. conduction-heating products in flexible pouches or plastic containers.
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