Analytical solution to the one-dimensional non-uniform absorption of solar radiation in uncoated and coated single glass panes

Hermanns Navarro, Miguel and Ama, Fernando del and Hernández Ramos, Juan Antonio (2012). Analytical solution to the one-dimensional non-uniform absorption of solar radiation in uncoated and coated single glass panes. "Energy and buildings", v. 47 ; pp. 561-571. ISSN 0378-7788. https://doi.org/10.1016/j.enbuild.2011.12.034.

Description

Title: Analytical solution to the one-dimensional non-uniform absorption of solar radiation in uncoated and coated single glass panes
Author/s:
  • Hermanns Navarro, Miguel
  • Ama, Fernando del
  • Hernández Ramos, Juan Antonio
Item Type: Article
Título de Revista/Publicación: Energy and buildings
Date: 2012
ISSN: 0378-7788
Volume: 47
Subjects:
Freetext Keywords: Single glass pane; Non-uniform absorption; Solar radiation; Analytical solution; Thermal performance
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The analytical solution to the one-dimensional absorption–conduction heat transfer problem inside a single glass pane is presented, which correctly takes into account all the relevant physical phenomena: the appearance of multiple reflections, the spectral distribution of solar radiation, the spectral dependence of optical properties, the presence of possible coatings, the non-uniform nature of radiation absorption, and the diffusion of heat by conduction across the glass pane. Additionally to the well established and known direct absorptance αe, the derived solution introduces a new spectral quantity called direct absorptance moment βe, that indicates where in the glass pane is the absorption of radiation actually taking place. The theoretical and numerical comparison of the derived solution with existing approximate thermal models for the absorption–conduction problem reveals that the latter ones work best for low-absorbing uncoated single glass panes, something not necessarily fulfilled by modern glazings.

More information

Item ID: 15740
DC Identifier: http://oa.upm.es/15740/
OAI Identifier: oai:oa.upm.es:15740
DOI: 10.1016/j.enbuild.2011.12.034
Official URL: http://www.sciencedirect.com/science/article/pii/S0378778811006505
Deposited by: Memoria Investigacion
Deposited on: 07 Nov 2014 18:10
Last Modified: 07 Nov 2014 18:10
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