Modelling and control approaches for energy reduction in continuous frying systems

Modelling and control approaches for energy reduction in continuous frying systems
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连续油炸系统节能建模和控制方法

DOI:
10.1016/j.apenergy.2013.01.084
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发表时间:
2013
期刊:
影响因子:
11.2
通讯作者:
Wu H
Wu H
中科院分区:
工程技术1区
文献类型:
--
作者:
Wu H

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连续油炸系统是非常耗能的。它们还涉及许多变量的相互作用和复杂的传热传质过程。更好地控制这些过程不仅可以提高产品质量,还可以降低能耗。本文提出了一个模型,可以模拟连续油炸系统的动态行为,使控制的影响的重要产品属性的水分和油含量进行调查。共轭二维瞬态模型的油炸机被用来开发的相关性的基础上的重要油炸机控制变量,即供油温度,马铃薯质量吞吐量,油炸锅的搅拌速度和炸脆速度。工业连续油炸机系统的数据进行了验证的相关性,并在整个油炸系统模型,这是在MATLAB中实现。在MATLAB/Simulink环境中实施的比例积分(PI)控制表明,与实际工业油炸系统相比,对重要参数的更紧密控制可以节省10%的能源。开发的建模方法也可以用来研究连续油炸系统的设计和控制的进一步改进。
Continuous frying systems are very energy intensive. They also involve the interaction of many variables and complex heat and mass transfer processes. Better control of these processes can lead not only to improved product quality but also energy reduction. This paper presents a model that can simulate the dynamic behaviour of a continuous frying system in sufficient detail that enables the influence of controls on the important product attributes of moisture and oil content to be investigated.A conjugate 2-D transient model of the fryer was used to develop correlations for the oil and moisture content based on the important fryer control variables, namely supply oil temperature, potato mass throughput, fryer paddle velocity and crisp takeout velocity. The correlations were validated against data for an industrial continuous fryer system and used within the overall frying system model which was implemented in MATLAB. Proportional Integral (PI) controls implemented within the MATLAB/Simulink environment have shown that closer control of the important parameters can lead to 10% energy savings compared to the actual industrial frying system. The modelling approaches developed can also be used to investigate further improvements in the design and control of continuous frying systems.
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