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On the modelling of heat exchangers and heat exchanger network dynamics using bond graphs
Mathematical and Computer Modelling of Dynamical Systems ( IF 1.9 ) Pub Date : 2018-10-15 , DOI: 10.1080/13873954.2018.1533566
Jørgen Bremnes Nielsen 1 , Eilif Pedersen 1
Affiliation  

ABSTRACT Heat exchanger networks are important systems in most thermal engineering systems and are found in applications ranging from power plants and the process industry to domestic heating. Achieving cost-effective design of heat exchanger networks relies heavily on mathematical modelling and simulation-based design. Today, stationary design calculations are carried out for all new designs, but for some special applications, the transient response of complete networks has been researched. However, simulating large heat exchanger networks poses challenges due to computational speed and stiff initial value problems when flow equations are cast in differential algebraic form. In this article, a systems approach to heat exchanger and heat exchanger network modelling is suggested. The modelling approach aims at reducing the cost of system model development by producing modular and interchangeable models. The approach also aims at improving the capability for large and complex network simulation by suggesting an explicit formulation of the network flow problem.

中文翻译:

使用键图对换热器和换热器网络动力学建模

摘要 换热器网络是大多数热力工程系统中的重要系统,广泛应用于从发电厂和过程工业到家庭供暖的应用中。实现具有成本效益的换热器网络设计在很大程度上依赖于数学建模和基于仿真的设计。今天,对所有新设计都进行了平稳设计计算,但对于一些特殊应用,已经研究了完整网络的瞬态响应。然而,当流动方程以微分代数形式表示时,由于计算速度和刚性初始值问题,模拟大型换热器网络会带来挑战。在本文中,提出了一种系统方法来进行换热器和换热器网络建模。建模方法旨在通过生成模块化和可互换的模型来降低系统模型开发的成本。该方法还旨在通过提出网络流问题的显式公式来提高大型复杂网络模拟的能力。
更新日期:2018-10-15
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