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dc.contributor.author
Macé de Gastines, Maureen Florence Laure  
dc.contributor.author
Correa Cantaloube, Erica Norma  
dc.contributor.author
Pattini, Andrea Elvira  
dc.date.available
2018-08-30T23:51:54Z  
dc.date.issued
2017-12  
dc.identifier.citation
Macé de Gastines, Maureen Florence Laure; Correa Cantaloube, Erica Norma; Pattini, Andrea Elvira; Heat transfer through window frames in EnergyPlus: model evaluation and improvement; Taylor & Francis; Advances in Building Energy Research; 12-2017; 1-18  
dc.identifier.issn
1751-2549  
dc.identifier.uri
http://hdl.handle.net/11336/57846  
dc.description.abstract
Window frames can significantly affect the energy demand of buildings. Due to their complex non-planar geometry, two-dimensional, time-consuming simulations are necessary to estimate with precision heat transfer through frames. However, in dynamic heat transfer calculation through computer-based building performance simulation tools, simplifications are made to reduce simulation time. In particular, EnergyPlus models window frames as rectangular profiles, and uses a one-dimensional heat transfer model. In order to evaluate whether this simplification is legitimate, thermal transmittance values were calculated for a selection of frames, on one hand through two-dimensional finite elements simulation, and on the other hand, through a spreadsheet that reproduces the steps of the algorithm currently used by EnergyPlus to calculate heat transfer through window frames. The comparison of both values showed relative errors higher than 20%, including for rectangular frames (without simplifying geometry). Aluminium frames without thermal break exhibited the highest absolute errors, up to 2.98 W/m2K. An alternative algorithm was proposed, which uses compactness factors for film coefficient calculation and reduced emissivities to take into account self-viewing surfaces. The proposed model improved the estimates, reducing the absolute error to less than 0.10 W/m2K in 52% of the occurrences, and to less than 0.47 W/m2K for aluminium windows.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Taylor & Francis  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Energyplus  
dc.subject
Heat Transfer  
dc.subject
Reduced Emissivity  
dc.subject
Simulation  
dc.subject
Window Frame  
dc.subject.classification
Ingeniería Medioambiental y Geológica, Geotécnicas  
dc.subject.classification
Ingeniería del Medio Ambiente  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Heat transfer through window frames in EnergyPlus: model evaluation and improvement  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-08-28T19:01:16Z  
dc.identifier.eissn
1756-2201  
dc.journal.pagination
1-18  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Macé de Gastines, Maureen Florence Laure. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ambiente, Hábitat y Energía; Argentina  
dc.description.fil
Fil: Correa Cantaloube, Erica Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ambiente, Hábitat y Energía; Argentina  
dc.description.fil
Fil: Pattini, Andrea Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ambiente, Hábitat y Energía; Argentina  
dc.journal.title
Advances in Building Energy Research  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/17512549.2017.1421098  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1080/17512549.2017.1421098