Absorption of infrared radiation and the radiation transfer mechanism in paper. Part I: Theoretical model
(1998) In Journal of Pulp and Paper Science 24(11). p.349-355- Abstract
- Infrared dryers, both gas fired and electrically healed, have become a widespread technology in the paper industry. This work proposes a model for the absorption of thermal radiation in the thickness direction of a paper sheet. The model is based on the multilayer idealization of a paper sheet proposed by Scallan and Porch. In this model, the optical properties of paper are considered as the result of multiple reflections and transmission processes between the layers in the paper sheet. Measurements on a number of commercial paper grades indicate that the basis weight per layer is close to 4 g/m(2). The model parameters, the reflectivity and transmissivity of a single layer; have been fitted to experimental literature data for the... (More)
- Infrared dryers, both gas fired and electrically healed, have become a widespread technology in the paper industry. This work proposes a model for the absorption of thermal radiation in the thickness direction of a paper sheet. The model is based on the multilayer idealization of a paper sheet proposed by Scallan and Porch. In this model, the optical properties of paper are considered as the result of multiple reflections and transmission processes between the layers in the paper sheet. Measurements on a number of commercial paper grades indicate that the basis weight per layer is close to 4 g/m(2). The model parameters, the reflectivity and transmissivity of a single layer; have been fitted to experimental literature data for the reflectivity and transmissivity of paper at different wavelengths, basis weights and moisture contents. In Part II of this work, the model will be used to study the absorption of thermal radiation in the thickness direction of a paper sheet during infrared drying. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3914015
- author
- Pettersson, M and Stenström, Stig LU
- organization
- publishing date
- 1998
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- mathematical models, equations, infrared radiation, absorption, heat, transfer, z direction, paper sheets, optical properties, multiply papers
- in
- Journal of Pulp and Paper Science
- volume
- 24
- issue
- 11
- pages
- 349 - 355
- publisher
- TAPPI
- external identifiers
-
- wos:000077077900003
- scopus:0032208204
- ISSN
- 0826-6220
- language
- English
- LU publication?
- yes
- id
- ea336b82-d9b9-46d0-ad3f-f82ba4d90934 (old id 3914015)
- date added to LUP
- 2016-04-01 15:31:16
- date last changed
- 2023-12-12 17:35:29
@article{ea336b82-d9b9-46d0-ad3f-f82ba4d90934,
abstract = {{Infrared dryers, both gas fired and electrically healed, have become a widespread technology in the paper industry. This work proposes a model for the absorption of thermal radiation in the thickness direction of a paper sheet. The model is based on the multilayer idealization of a paper sheet proposed by Scallan and Porch. In this model, the optical properties of paper are considered as the result of multiple reflections and transmission processes between the layers in the paper sheet. Measurements on a number of commercial paper grades indicate that the basis weight per layer is close to 4 g/m(2). The model parameters, the reflectivity and transmissivity of a single layer; have been fitted to experimental literature data for the reflectivity and transmissivity of paper at different wavelengths, basis weights and moisture contents. In Part II of this work, the model will be used to study the absorption of thermal radiation in the thickness direction of a paper sheet during infrared drying.}},
author = {{Pettersson, M and Stenström, Stig}},
issn = {{0826-6220}},
keywords = {{mathematical models; equations; infrared radiation; absorption; heat; transfer; z direction; paper sheets; optical properties; multiply papers}},
language = {{eng}},
number = {{11}},
pages = {{349--355}},
publisher = {{TAPPI}},
series = {{Journal of Pulp and Paper Science}},
title = {{Absorption of infrared radiation and the radiation transfer mechanism in paper. Part I: Theoretical model}},
volume = {{24}},
year = {{1998}},
}