Transfer Behavior of Heat Exchanger

Abstract:

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This study deals with the transient response of heat exchanger which is approximated to the first-order system with delay. This function is of simple form and easy to be applied to design the practical controllers. The parameters such as gain K, time constant T and delay time are derived in this paper. On the basis of using the first-order system as the transfer function for a heat exchanger, more accurate models are built to derive the parameters K, T and respectively, which are constructed with a lumped parameter approach. Unlike a number of recent analyses K is obtained by using arithmetic mean temperature difference, log mean temperature difference has been employed instead, which minimized the error; time constant T is obtained by deriving the time constant of baffle; delay time is estimated by flow rate. The result shows that this method to study the dynamic characteristics of heat exchanger is easier, more accurate.

Info:

Periodical:

Advanced Materials Research (Volumes 233-235)

Edited by:

Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He

Pages:

1281-1287

DOI:

10.4028/www.scientific.net/AMR.233-235.1281

Citation:

G. M. Cui et al., "Transfer Behavior of Heat Exchanger", Advanced Materials Research, Vols. 233-235, pp. 1281-1287, 2011

Online since:

May 2011

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Price:

$35.00

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