Practical and policy-relevant performance metrics for complex fenestration systems.(Report): An article from: ASHRAE Transactions

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2012. The length of the article is 4124 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: Three metrics, the Relative Energy Impact (REIl. the Extent of Comfortable Daylight (ECDi. and the View Through Potential (VTPi, were derived from these three criteria to express, in relative terms, a facade's contribution to building energy use. the fraction of time and space for which it achieves comfortable daylight conditions, and the degree of transparency as it relates to an occupant's nm through the facade, respectively. These metrics are intended to exist as a mechanism by which manufacturers can evaluate and compare facade systems, provide high-level intuition of relative performance for designers and contractors, and enable the balance of performance objectives based on user preference. In order to successfully implement these metrics, a simple and repeatable calculation process was identified first through a series of sensitivity analyses compromising on relevance or accuracy, and then by defining input conditions that are able to reduce calculation or simulation time substantially. Using both approaches, each of these metrics was further and applied to five sample facades that cover a broad range of Complex Fenestration System types, including a validation study for the TP metric A visual representation of this information in a condensed format was then investigated so as to alloi straightforward comparisons amongst systems and a synthetic understanding of their performance A graphical, label-like structure could indeed provide an initial suggestion for the use of these metrics in the rating and standard-setting environments.

Citation Details
Title: Practical and policy-relevant performance metrics for complex fenestration systems.(Report)
Author: Shreya Dave
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2012
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 118 Issue: 1 Page: 392(8)

Article Type: Report

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