Measurement of Energy Savings with Awnings


To demonstrate the material qualities of awnings and the potential savings achieved by their use, a quick study was carried out in two phases. The first phase, reported earlier, dealt with the light transmittance and air permeability of the awning fabric. In the second phase, in situ measurements were made to establish the energy requirements needed to maintain two chambers (one chamber with an awning, one without) at a particular temperature. Included in each chamber were an air conditioner, a heater, a muffin fan, two watt-hour meters and a thermocouple. Results indicate that the use of awnings produces a savings of about 21.5 kilowatt-hours of electricity per year per square foot of window are for southerly facing windows covered by awnings in a warm, humid climate (e.g. south central USA). The awnings on southerly facing windows can also produce a savings of about US$1.50 per year per square foot of window area at electricity costs of US$0.07 per kilowatt-hour.


Mechanical and Aerospace Engineering

Keywords and Phrases

Economics; Energy Conservation; Textiles-Applications; Thermoanalysis

Document Type

Article - Journal

Document Version


File Type





© 1988 International Solar Energy Society (ISES), All rights reserved.

Publication Date

01 Jan 1988

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