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dc.contributor.authorWright, John L.
dc.contributor.authorSullivan, Harry F. 19:08:50 (GMT) 19:08:50 (GMT)
dc.description© 1988. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. ( Published in ASHRAE Transactions, Vol. 94, Part 2. For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior written permission.en
dc.description.abstractPrecise heat transfer measurements have been carried out during the last 20 years using a guarded heater plate apparatus. This apparatus has been adapted and used over the last several years to perform U-value measurements on a variety of prototypical glazing systems. Results from two sets of measurements are presented. One set of results quantifies heat transfer across stagnant air layers containing an intermediate fluorinated ethylene-propylene (FEP) glazing and bounded by plates of various emissivities. The second set consists of values (i.e., glass-to-glass U-values) for a set of glazing systems that incorporate up to four glazings, one of two solar-control metal coatings and up to two intermediate glazings made of FEP film. In each case the measured results are compared to simulation. In the first study the discrepancy between measured and calculated heat transfer rates was less than 2% in all cases. In the second study the discrepancy was never greater than 8% and was less than 3% in the majority of cases. These results indicate that the test method used is well suited to the reliable measurement of glazing system U-value. It is a useful tool as a developmental test procedure for glazing system design because it can be carried out quickly and at low cost. The apparatus and procedure are described in detail.en
dc.description.sponsorshipRenewable energy division || Solar energy development program || Department of energy, mines, and resources Canadaen
dc.publisherAmerican Society of Heating, Refrigerating and Air-Conditioning Engineersen
dc.subjectHeat transferen
dc.titleGlazing System U-Value Measurement Using a Guarded Heater Plate Apparatusen
dcterms.bibliographicCitationWright, J.L., Sullivan, H.F., "Glazing System U-Value Measurement Using a Guarded Heater Plate Apparatus," ASHRAE Transactions, Vol. 94, Pt. 2., (1988) pp. 1325-1337en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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