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Evaluation of the Energy Efficiencies for a Gas Heated Infrared Paper Dryer

Stenström, Stig LU and Johansson, M (1995) In Drying Technology 13(5-7). p.1345-1358
Abstract
The radiation and total efficiencies, the amount of gas radiation from vapour and carbon dioxide and contribution from convective heat transfer for different operating conditions have been measured and modelled in an industrial gas heated IR dryer. Instrumentation to facilitate the measurement of the spectral distribution of the radiation heat fluxes in industrial infrared equipment has been developed. The radiation efficiency ranges between 35 to 39 % and the total energy efficiency has been calculated as 28-31 %. This is in good agreement with previous measurements. The emitter radiosity was measured as 101 kW/m(2) which is in reasonable agreement with the calculated value of 115 kW/m(2). The total efficiency can be much improved if the... (More)
The radiation and total efficiencies, the amount of gas radiation from vapour and carbon dioxide and contribution from convective heat transfer for different operating conditions have been measured and modelled in an industrial gas heated IR dryer. Instrumentation to facilitate the measurement of the spectral distribution of the radiation heat fluxes in industrial infrared equipment has been developed. The radiation efficiency ranges between 35 to 39 % and the total energy efficiency has been calculated as 28-31 %. This is in good agreement with previous measurements. The emitter radiosity was measured as 101 kW/m(2) which is in reasonable agreement with the calculated value of 115 kW/m(2). The total efficiency can be much improved if the excess air factor is reduced or the preheating temperature of the combustion air is increased. More work could be directed towards improvements of the gas flow behaviour between emitter and web, contributing to increased convective heat transfer to the web. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
CONVECTIVE HEAT TRANSFER, ENERGY EFFICIENCY, FTIR, GAS RADIATION, INFRARED, MODELING
in
Drying Technology
volume
13
issue
5-7
pages
1345 - 1358
publisher
TAPPI
external identifiers
  • wos:A1995RP12700019
  • scopus:0012693946
ISSN
1532-2300
DOI
10.1080/07373939508917026
language
English
LU publication?
yes
id
c07961b7-0bae-4250-b8c6-91b6b1ed2bea (old id 3914080)
date added to LUP
2013-07-01 11:24:29
date last changed
2017-01-01 05:00:15
@article{c07961b7-0bae-4250-b8c6-91b6b1ed2bea,
  abstract     = {The radiation and total efficiencies, the amount of gas radiation from vapour and carbon dioxide and contribution from convective heat transfer for different operating conditions have been measured and modelled in an industrial gas heated IR dryer. Instrumentation to facilitate the measurement of the spectral distribution of the radiation heat fluxes in industrial infrared equipment has been developed. The radiation efficiency ranges between 35 to 39 % and the total energy efficiency has been calculated as 28-31 %. This is in good agreement with previous measurements. The emitter radiosity was measured as 101 kW/m(2) which is in reasonable agreement with the calculated value of 115 kW/m(2). The total efficiency can be much improved if the excess air factor is reduced or the preheating temperature of the combustion air is increased. More work could be directed towards improvements of the gas flow behaviour between emitter and web, contributing to increased convective heat transfer to the web.},
  author       = {Stenström, Stig and Johansson, M},
  issn         = {1532-2300},
  keyword      = {CONVECTIVE HEAT TRANSFER,ENERGY EFFICIENCY,FTIR,GAS RADIATION,INFRARED,MODELING},
  language     = {eng},
  number       = {5-7},
  pages        = {1345--1358},
  publisher    = {TAPPI},
  series       = {Drying Technology},
  title        = {Evaluation of the Energy Efficiencies for a Gas Heated Infrared Paper Dryer},
  url          = {http://dx.doi.org/10.1080/07373939508917026},
  volume       = {13},
  year         = {1995},
}