Convective heat transfer correlations for fenestration glazing cavities: A review

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20085677

Zhao, Y; Curcija, D; Goss, W P

Convective heat transfer in insulated glazing unit (IGU) cavities is a major component of the overall heat transfer in fenestration systems. Accurately quantifying the heat-transfer coefficient within the cavity is of great significance in calculating the center-of-glass U factor, the edge-of-glass U factor, and therefore the overall U factor. Over the past 40 years, along with the rapid development of experimental techniques and numerical methods as well as the powerful computer systems, the heat-transfer correlations have been updated either from experimental data or from numerical data from time to time. The literature reviewed here covers correlations based on simplified analytical studies, on the experimental data, and on the numerical results. In addition, most of the correlation equations cover the typical design range of fenestration glazing cavities, e.g., Ra < 20,000. Inconsistencies and discrepancies existing between different experimental observations, and between derived numerical/analytical correlations and available experimental data, are discussed.

• Research Organization: ALCOA Technical Center, Alcoa Center, PA (US)
• Sponsoring Organization: US Department of Energy
• OSTI ID: 20085677
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CONVECTION
DOORS
EVALUATED DATA
GLAZING MATERIALS
SKYLIGHTS
U VALUES
WINDOWS