Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8137
Title: An inverse technique to determine volatile organic compounds diffusion and partition coefficients in dry building material
Authors: Li, F
Niu, JL 
Issue Date: 2005
Publisher: Springer
Source: Heat and mass transfer, 2005, v. 41, no. 9, p. 834-842 How to cite?
Journal: Heat and mass transfer 
Abstract: A mass transfer theory based model describing volatile organic compounds (VOCs) diffusion in dry building material was presented. Effects of some key parameters on the model output were theoretically studied. An inverse method was developed to estimate the diffusion coefficient (D) and partition coefficient (K) of VOC/material combination by utilizing dynamic chamber emission data. The present inverse parameter estimation problem was solved with Levenberg-Marquardt method of minimization of the ordinary least-squares norm. Sensitivity analysis showed the feasibility of simultaneous estimation of D and K. The present inverse method was first validated by a theoretical case. Measurements with different error levels were used to show their effects on the accuracy of the estimates. Results indicate that the present inverse method can be used to accurately estimate both D and K with the additional information of measured VOC concentration in chamber. Then experimental data of styrene/carpet combination obtained from standard field and laboratory emission cell emission test were used to determine D and K using the validated inverse method. Reliable results were obtained.
URI: http://hdl.handle.net/10397/8137
ISSN: 0947-7411
EISSN: 1432-1181
DOI: 10.1007/s00231-004-0614-5
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