Non-gray calculation of plate solar collector with low iron glazing taking into account the absorption and emission with a glass cover

M. Khoukhi, S. Maruyama, S. Sakai

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A new theoretical approach of black flat-plate solar collector considering the glass cover as a participating media taking into account the absorption and emission within a glass cover is presented. Two kinds of glasses commonly used as cover for such system, clear and low iron, have been studied. The glass material is analyzed as a non-gray plane parallel medium subjected to solar and thermal irradiations in one-dimensional case using the Radiation Element Method by Ray Emission Model. The optical constants of the complex refractive index, 160 values of real part (n) and imaginary part (k), of a clear and low iron glasses proposed by Rubin covering the range of interest for solar and thermal calculation have been used. The CPU times for predicting the thermal behavior of a solar collector using non-gray models were found to be prohibitively long. Therefore, suitable semi-gray models have been proposed for rapid calculation. In order to compare the thermal performance of solar collector having low iron glass as a cover with the solar collector having clear glazing, the previous result concerning the clear glass cover will be presented again. It has been also shown that the instantaneous efficiency of the solar collector with a low iron glass cover is higher than the efficiency of the system with clear glass cover.

Original languageEnglish
Pages (from-to)156-162
Number of pages7
JournalDesalination
Volume209
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Apr 30 2007

Fingerprint

Solar collectors
Iron
glass
iron
Glass
calculation
solar collector
Optical constants
refractive index
Program processors
Refractive index
irradiation
Irradiation
Radiation
Hot Temperature

Keywords

  • Glass cover
  • Plate solar collector

ASJC Scopus subject areas

  • Filtration and Separation
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Non-gray calculation of plate solar collector with low iron glazing taking into account the absorption and emission with a glass cover. / Khoukhi, M.; Maruyama, S.; Sakai, S.

In: Desalination, Vol. 209, No. 1-3 SPEC. ISS., 30.04.2007, p. 156-162.

Research output: Contribution to journalArticle

@article{e55da6bd308e45008973b0523379e1b6,
title = "Non-gray calculation of plate solar collector with low iron glazing taking into account the absorption and emission with a glass cover",
abstract = "A new theoretical approach of black flat-plate solar collector considering the glass cover as a participating media taking into account the absorption and emission within a glass cover is presented. Two kinds of glasses commonly used as cover for such system, clear and low iron, have been studied. The glass material is analyzed as a non-gray plane parallel medium subjected to solar and thermal irradiations in one-dimensional case using the Radiation Element Method by Ray Emission Model. The optical constants of the complex refractive index, 160 values of real part (n) and imaginary part (k), of a clear and low iron glasses proposed by Rubin covering the range of interest for solar and thermal calculation have been used. The CPU times for predicting the thermal behavior of a solar collector using non-gray models were found to be prohibitively long. Therefore, suitable semi-gray models have been proposed for rapid calculation. In order to compare the thermal performance of solar collector having low iron glass as a cover with the solar collector having clear glazing, the previous result concerning the clear glass cover will be presented again. It has been also shown that the instantaneous efficiency of the solar collector with a low iron glass cover is higher than the efficiency of the system with clear glass cover.",
keywords = "Glass cover, Plate solar collector",
author = "M. Khoukhi and S. Maruyama and S. Sakai",
year = "2007",
month = "4",
day = "30",
doi = "10.1016/j.desal.2007.04.025",
language = "English",
volume = "209",
pages = "156--162",
journal = "Desalination",
issn = "0011-9164",
publisher = "Elsevier",
number = "1-3 SPEC. ISS.",

}

TY - JOUR

T1 - Non-gray calculation of plate solar collector with low iron glazing taking into account the absorption and emission with a glass cover

AU - Khoukhi, M.

AU - Maruyama, S.

AU - Sakai, S.

PY - 2007/4/30

Y1 - 2007/4/30

N2 - A new theoretical approach of black flat-plate solar collector considering the glass cover as a participating media taking into account the absorption and emission within a glass cover is presented. Two kinds of glasses commonly used as cover for such system, clear and low iron, have been studied. The glass material is analyzed as a non-gray plane parallel medium subjected to solar and thermal irradiations in one-dimensional case using the Radiation Element Method by Ray Emission Model. The optical constants of the complex refractive index, 160 values of real part (n) and imaginary part (k), of a clear and low iron glasses proposed by Rubin covering the range of interest for solar and thermal calculation have been used. The CPU times for predicting the thermal behavior of a solar collector using non-gray models were found to be prohibitively long. Therefore, suitable semi-gray models have been proposed for rapid calculation. In order to compare the thermal performance of solar collector having low iron glass as a cover with the solar collector having clear glazing, the previous result concerning the clear glass cover will be presented again. It has been also shown that the instantaneous efficiency of the solar collector with a low iron glass cover is higher than the efficiency of the system with clear glass cover.

AB - A new theoretical approach of black flat-plate solar collector considering the glass cover as a participating media taking into account the absorption and emission within a glass cover is presented. Two kinds of glasses commonly used as cover for such system, clear and low iron, have been studied. The glass material is analyzed as a non-gray plane parallel medium subjected to solar and thermal irradiations in one-dimensional case using the Radiation Element Method by Ray Emission Model. The optical constants of the complex refractive index, 160 values of real part (n) and imaginary part (k), of a clear and low iron glasses proposed by Rubin covering the range of interest for solar and thermal calculation have been used. The CPU times for predicting the thermal behavior of a solar collector using non-gray models were found to be prohibitively long. Therefore, suitable semi-gray models have been proposed for rapid calculation. In order to compare the thermal performance of solar collector having low iron glass as a cover with the solar collector having clear glazing, the previous result concerning the clear glass cover will be presented again. It has been also shown that the instantaneous efficiency of the solar collector with a low iron glass cover is higher than the efficiency of the system with clear glass cover.

KW - Glass cover

KW - Plate solar collector

UR - http://www.scopus.com/inward/record.url?scp=34247505778&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247505778&partnerID=8YFLogxK

U2 - 10.1016/j.desal.2007.04.025

DO - 10.1016/j.desal.2007.04.025

M3 - Article

VL - 209

SP - 156

EP - 162

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 1-3 SPEC. ISS.

ER -