Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 362837
Title Modelling of natural-convection driven heat exchangers
Author(s) Dirkse, M.H.; Loon, W.K.P. van; Stigter, J.D.; Bot, G.P.A.
Source In: Agricontrol 2007 Proceedings of the 2nd IFAC Intern. Conf. on Modeling and Design of Control Systems in Agriculture, Osijek, Croatia, 3 - 5 September, 2007. - Osijek : IFAC - p. 47 - 52.
Event Osijek : IFAC Agricontrol 2007, 2007-09-03/2007-09-05
Department(s) Systems and Control Group
WIMEK
Publication type Contribution in proceedings
Publication year 2007
Abstract Abstract: A lumped model is developed for shell-and-tube heat exchangers driven by natural convection, which is based on a one-dimensional approximation. The heat flux is driven by the logarithmic mean temperature difference. The volumetric air flow rate is driven by the buoyant force. Based on the Boussinesq aproximation, this force is characterised by an analytic expression of the inflow and outflow temperatures. The lumped model is finished by relating the buoyant force to the friction force via the drag coefficient. The model was calibrated and validated based on Computational Fluid Dynamics calculations and physical measurements.
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