Process capability index Cpk for monitoring the thermal performance in the distribution of refrigerated products

A. Novaes, O. F. Lima, C. Carvalho, Dmontier Pinheiro Aragão Junior
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引用次数: 5

Abstract

The temperature of refrigerated products along the cold chain must be kept within pre-defined limits to ensure adequate safety levels and high product quality. Because temperature largely influences microbial activities, the continuous monitoring of the time-temperature history over the distribution process usually allows for the adequate control of the product quality along both short- and medium-distance distribution routes. Time-Temperature Indicators (TTI) are composed of temperature measurements taken at various time intervals and are used to feed analytic models that monitor the impacts of temperature on product quality. Process Capability Indices (PCI), however, are calculated using TTI series to evaluate whether the thermal characteristics of the process are within the specified range. In this application, a refrigerated food delivery route is investigated using a simulated annealing algorithm that considers alternative delivery schemes. The objective of this investigation is to minimize the distance traveled while maintaining the vehicle temperature within the prescribed capability level.
过程能力指数Cpk用于监控冷藏产品配送过程中的热性能
沿着冷链的冷藏产品的温度必须保持在预定的限度内,以确保足够的安全水平和高产品质量。由于温度在很大程度上影响微生物的活动,因此在配送过程中对时间-温度历史的持续监测通常可以在中短途配送路线上充分控制产品质量。时间-温度指标(TTI)由在不同时间间隔进行的温度测量组成,用于提供分析模型,以监测温度对产品质量的影响。然而,过程能力指数(PCI)是使用TTI系列来计算的,以评估过程的热特性是否在规定的范围内。在本应用中,使用模拟退火算法研究了冷藏食品配送路线,该算法考虑了可选的配送方案。本次调查的目的是尽量减少行驶距离,同时保持车辆温度在规定的能力水平内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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