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Energy Technologies Area (ETA) researchers are continually building on the strong scientific foundation we have developed over the past 50 years. We address the world’s most pressing climate challenges by bringing to market energy-efficient innovations across the buildings, transportation, and industrial sectors. ETA is at the forefront of developing better batteries for electric vehicles; improving the country's aging electrical grid and innovating distributed energy and storage solutions; developing grid-interactive, efficient buildings; and providing the most comprehensive market and data analysis worldwide for renewable technologies like wind and solar.
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The Energy Technologies Area (ETA) is unique in translating fundamental scientific discoveries into scalable technology adoption. Our approach combines an understanding of the marketplace and the role of state and federal regulation and policies. ETA's research drives real-world, practical results that affect and improve the everyday lives of Americans and those across the globe. Saving energy and battling the Climate Crisis are key to the foundation of our research, which is driven by technoeconomic analysis and in-lab experimentation and discovery.

A Versatile Procedure for Calculating Heat Transfer Through Windows

Publication Type

Journal Article

Authors

Arasteh, Dariush K, M. M Susan Reilly, Michael D Rubin

Abstract

Advances in window technologies and the desire to standardize the reporting of standardswindow heat transfer indices have necessitated the development of a comprehensivesanalytical procedure for calculating heat transfer through windows. This paper showsshow complete window heat transfer can be considered as the area-weighted sum of thesthree window component areas: the center-of-glass area, the edge-of-glass area, and thesframe area. Algorithms for calculating heat transfer through each of these areas and forscombining these to calculate total window indices are presented.

Journal

ASHRAE Transactions

Volume

Year of Publication

1989