Thermal performance of complex fenestration systems

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:33318

Carpenter, S C ^[1]; Elmahdy, A H ^[2]

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1. Enermodal Engineering Ltd., Waterloo, Ontario (Canada)
2. National Research Council of Canada, Ottawa, Ontario (Canada). Inst. of Research in Construction

The thermal performance (i.e., U-factor) of four complex fenestration systems is examined using computer simulation tools and guarded hot box testing. The systems include a flat glazed skylight, a domed or bubble skylight, a greenhouse window, and a curtain wall. The extra care required in performing simulation and testing of these complex products is described. There was good agreement (within 10%) between test and simulation for two of the four products. The agreement was slightly poorer (maximum difference of 16%) for the two high-heat-transfer products: the domed skylight and the greenhouse window. Possible causes for the larger discrepancy in these projecting window products are uncertainties in the inside and outside film coefficients and lower warm-side air temperatures because of stagnant airflow.

• OSTI ID: 33318
• Report Number(s): CONF-9406105--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COMPUTERIZED SIMULATION
CURTAINS
SKYLIGHTS
U VALUES
V CODES
W CODES
WINDOWS