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Description of ParaSol v3.0 and comparison with measurements

Hellström, Bengt LU ; Kvist, Hasse LU ; Håkansson, Håkan LU and Bülow-Hübe, Helena LU (2007) In Energy and Buildings 39(3). p.279-283
Abstract
Parasol is a computer program for calculating the solar and thermal properties of windows with sunshades and the energy demands of a room with a window/shading system. The program has three main features. One of them is a calculation of g, T and U for normal incidence of beam irradiation, which is performed as soon as a window or an internal/interpane sunshade is selected. The other two are based on yearly simulations, using DEROB-LTH, a building energy simulation program on which ParaSol is based. One of the applications gives the monthly average of g and T for the window glazing and the glazing/sunshade system. The other application gives the heating and cooling demands for a room with a window, with and without a sunshade, where input... (More)
Parasol is a computer program for calculating the solar and thermal properties of windows with sunshades and the energy demands of a room with a window/shading system. The program has three main features. One of them is a calculation of g, T and U for normal incidence of beam irradiation, which is performed as soon as a window or an internal/interpane sunshade is selected. The other two are based on yearly simulations, using DEROB-LTH, a building energy simulation program on which ParaSol is based. One of the applications gives the monthly average of g and T for the window glazing and the glazing/sunshade system. The other application gives the heating and cooling demands for a room with a window, with and without a sunshade, where input data are given for the internal heat, ventilation settings, shading control and temperature set-points. Version 3.0 of Parasol, which has some new and improved models, is described in this paper. The g-values obtained with this program version are compared with measurements on windows with internal/interpane screens/venetian blinds. The absolute deviation is less than 0.03 for the venetian blinds. The measured values of dark internal screens with closed air gaps exceed those simulated by Parasol, but are lower than the ones simulated with open air gaps. (C) 2006 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
venetian blind, solar shading, solar transmittance, window, building, energy simulation
in
Energy and Buildings
volume
39
issue
3
pages
279 - 283
publisher
Elsevier
external identifiers
  • wos:000244589500004
  • scopus:33846569019
ISSN
1872-6178
DOI
10.1016/j.enbuild.2006.06.008
language
English
LU publication?
yes
id
cb589647-04d6-44b4-a59a-3ed95b3ab595 (old id 674224)
date added to LUP
2007-12-11 09:36:21
date last changed
2017-07-30 03:53:18
@article{cb589647-04d6-44b4-a59a-3ed95b3ab595,
  abstract     = {Parasol is a computer program for calculating the solar and thermal properties of windows with sunshades and the energy demands of a room with a window/shading system. The program has three main features. One of them is a calculation of g, T and U for normal incidence of beam irradiation, which is performed as soon as a window or an internal/interpane sunshade is selected. The other two are based on yearly simulations, using DEROB-LTH, a building energy simulation program on which ParaSol is based. One of the applications gives the monthly average of g and T for the window glazing and the glazing/sunshade system. The other application gives the heating and cooling demands for a room with a window, with and without a sunshade, where input data are given for the internal heat, ventilation settings, shading control and temperature set-points. Version 3.0 of Parasol, which has some new and improved models, is described in this paper. The g-values obtained with this program version are compared with measurements on windows with internal/interpane screens/venetian blinds. The absolute deviation is less than 0.03 for the venetian blinds. The measured values of dark internal screens with closed air gaps exceed those simulated by Parasol, but are lower than the ones simulated with open air gaps. (C) 2006 Elsevier B.V. All rights reserved.},
  author       = {Hellström, Bengt and Kvist, Hasse and Håkansson, Håkan and Bülow-Hübe, Helena},
  issn         = {1872-6178},
  keyword      = {venetian blind,solar shading,solar transmittance,window,building,energy simulation},
  language     = {eng},
  number       = {3},
  pages        = {279--283},
  publisher    = {Elsevier},
  series       = {Energy and Buildings},
  title        = {Description of ParaSol v3.0 and comparison with measurements},
  url          = {http://dx.doi.org/10.1016/j.enbuild.2006.06.008},
  volume       = {39},
  year         = {2007},
}