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Calculating heat transfer through windows
Author(s) -
Rubin Michael
Publication year - 1982
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440060405
Subject(s) - heat transfer , window (computing) , heat flux , thermal , energy conservation , mechanics , wind speed , solar energy , thermal radiation , energy (signal processing) , radiation , materials science , mechanical engineering , nuclear engineering , environmental science , meteorology , computer science , thermodynamics , engineering , optics , physics , electrical engineering , quantum mechanics , operating system
To calculate the energy performance of buildings, one must know the heat‐transfer characteristics of the windows as functions of environmental variables, such as temperature and wind speed. Window designs are becoming more complex in response to the need for energy conservation. In this paper, we develop a general procedure for calculating the net energy flux through the glazed area of a window composed of an arbitrary number of solid layers. These layers, which may have thin‐film coatings, can have any specified solar and thermal radiation properties and enclosed spaces between solid layers can contain either air or other gases. We verified our results by comparing them with experimental measurements of heat flow using a calibrated hot‐box.