دانلود رایگان مقاله انگلیسی یک راه حل تحلیلی برای رفتار پویای شبکه های مبدل حرارتی - الزویر 2018

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رایگان

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عنوان فارسی

یک راه حل تحلیلی برای رفتار پویای شبکه های مبدل حرارتی

عنوان انگلیسی

An analytical solution to the dynamic behavior of heat exchanger networks

صفحات مقاله فارسی

0

صفحات مقاله انگلیسی

13

سال انتشار

2018

نشریه

الزویر - Elsevier

فرمت مقاله انگلیسی

PDF

نوع مقاله

ISI

نوع نگارش

مقالات پژوهشی (تحقیقاتی)

رفرنس

دارد

پایگاه

اسکوپوس

کد محصول

E10253

رشته های مرتبط با این مقاله

مهندسی مکانیک

گرایش های مرتبط با این مقاله

مکانیک سیالات، تبدیل انرژی

مجله

مجله بین المللی انتقال گرما و جرم - International Journal of Heat and Mass Transfer

دانشگاه

School of Energy and Power Engineering - University of Shanghai for Science and Technology - PR China

کلمات کلیدی

واكنش گذرا، شبیه سازی پویا، راه حل تحلیلی، شبکه های مبدل حرارتی (HEN)

doi یا شناسه دیجیتال

https://doi.org/10.1016/j.ijheatmasstransfer.2018.05.041

برای سفارش ترجمه این مقاله با کیفیت عالی و در کوتاه ترین زمان ممکن توسط مترجمین مجرب سایت ایران عرضه؛ روی دکمه سبز رنگ کلیک نمایید.

چکیده

abstract

A novel method combined signal flow graph of a single heat exchanger with the transfer function of streams is developed for the dynamic behaviors of heat exchanger networks problems, which are determinate factors of the process control and operation optimization in the processing industries. The transfer functions between any two nodes of heat exchanger networks including the inlet and the outlet are obtained based on the signal flow graph of the networks by block-diagram reduction, Mason’s rule and the seeking-up method. The developed method is solved by a numerical inverse Laplace transform and the analytical solution to the dynamic behavior of heat exchanger networks is presented in the time domain. The numerical results demonstrate that the presented method is more efficient and more accurate for the dynamic behaviors of heat exchanger networks problems.

نتیجه گیری

Conclusions

In this paper, signal flow graphs are used to analyze the dynamic behavior and to establish an analytical solution to the dynamic behavior of HEN as follows: (1) The signal flow graph of the HEN is established according to the transitive relation among streams where a single heat exchanger is treated as a 4 4 MIMO system. (2) The dynamic input-output relation of the HEN is turned into a signal flow graph, including all of the transfer relationships of the temperature and flow rate in the networks. (3) Three methods are proposed to obtain the outputs of the whole network, including the outlet nodes and the intermediate nodes in the Laplace domain. (4) An analytical solution to the dynamic behavior of HEN is presented with the Laplace inverse transform. To test the effectiveness of the proposed method, a 4 5 HEN is taken as an example. Transient processes under a single disturbance and multi-disturbances are obtained. The conditions are in accordance with the practical conditions, and exact results are obtained. The simulation results obtained illustrated the advantages of the method, including high computation speed, high static and dynamic accuracy, and good adaptability for on-line control and optimal design of the networks.

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