skip navigation

PUBLICATIONS

Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 

NCJ Number: 64370 Add to Shopping cart Find in a Library
Title: SIMPLIFIED ANALYSIS OF THERMAL AND LIGHTING CHARACTERISTICS OF WINDOWS - TWO CASE STUDIES
Author(s): T KUSUDA; B L COLLINS
Corporate Author: US Dept of Commerce
National Bureau of Standards
United States of America
Date Published: 1978
Page Count: 113
Sponsoring Agency: National Institute of Justice/
Rockville, MD 20849
Superintendent of Documents, GPO
Washington, DC 20402
US Dept of Commerce
Washington, DC 20234
Contract Number: RT 193012; E (49-1) 3800
Sale Source: Superintendent of Documents, GPO
Washington, DC 20402
United States of America

National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: USING TWO WASHINGTON, D.C., CASE STUDIES, RESULTS ARE PRESENTED OF A SIMPLIFIED ANALYSIS FOR ANNUAL HEATING, COOLING, AND LIGHTING REQUIREMENTS ASSOCIATED WITH WINDOWS.
Abstract: ANALYSIS OF THE THERMAL AND DAYLIGHTING PERFORMANCE OF SINGLE- AND DOUBLE-GLAZED WINDOWS OF VARIOUS SIZES IS USED TO ILLUSTRATE WAYS IN WHICH THE NATURAL LIGHTING AND SOLAR BENEFITS OF WINDOWS CAN PARTIALLY OR FULLY OFFSET THEIR NORMAL HEAT CONDUCTION DISADVANTAGES. THE EFFECTS OF VARYING THE OPERATION OF A WINDOW ARE STUDIED BY MODELING BOTH THE SELECTIVE MANAGEMENT OF INTERNAL WINDOW COVERINGS (FENESTRATION MANAGEMENT), AND THE SUBSTITUTION OF NATURAL LIGHT FOR ARTIFICIAL LIGHT (WHENEVER PRACTICABLE). THREE DIFFERENT MODES OF OPERATION FOR HEATING AND COOLING REQUIREMENTS THROUGH WINDOWS WERE ASSESSED: EXTERNAL LOADS ONLY; EXTERNAL AND INTERNAL; AND EXTERNAL, INTERNAL, AND DAYLIGHT. THE USE OF DAYLIGHT OFFERED THE GREATEST POTENTIAL FOR REDUCING ENERGY COSTS, PARTICULARLY WHEN COMBINED WITH SELECTIVE FENESTRATION MANAGEMENT. THE REDUCTION WAS GREATEST FOR MANAGED SOUTH-FACING, DOUBLE-GLAZED WINDOWS IN WHICH DAYLIGHT REPLACES OR SUPPLEMENTS ARTIFICIAL LIGHT. IN ALL CASES, HOWEVER, REDUCING OPERATING COSTS FOR WINDOWS REQUIRED CAREFUL CONSIDERATION OF ORIENTATION, USE OF DAYLIGHT WHENEVER SUFFICIENT, AND OFF-HOUR TEMPERATURE SETBACK. DIAGRAMS AND PHOTOGRAPHS ACCOMPANY THE TEXT. (AUTHOR ABSTRACT MODIFIED--MHP)
Index Term(s): Energy conservation; Environmental quality; Lighting; Research
Note: NBS (NATIONAL BUREAU OF STANDARDS) BUILDING SCIENCE SERIES 109
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=64370

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.