Laser sealed evacuated window glazings
Conference
·
OSTI ID:6274603
The design and fabrication of a highly insulating, evacuated window glazing have been investigated. A thermal network model has been used to parametrically predict the thermal performance of such a window. Achievable design, options are predicted to provide a glazing with a thermal conductance less than 0.6 W/m/sup 2/K (R > 10/sup 0/F ft/sup 2/ h/Btu) which is compact, lightweight, and durable. A CO/sub 2/ laser has been used to produce a continuous, leak tight, welded glass perimeter seal around 25 x 25 cm/sup 2/ test specimens. Various diameters of regularly spaced spherical support spacers were incorporated in the specimens as well as an integral SnO/sub 2/:F transparent, low emissivity coating for suppression of radiative heat transfer. Laser sealing rates of .06 cm/s were achieved at a 580/sup 0/C glass working temperature with 400 W of continuous wave (CW) laser power.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6274603
- Report Number(s):
- SERI/TP-255-2454; CONF-840872-31; ON: DE85000512
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
CARBON DIOXIDE LASERS
COVERINGS
DOUBLE GLAZING
ENERGY TRANSFER
EQUIPMENT
EVACUATED COLLECTORS
GAS LASERS
GLAZING
GLAZING MATERIALS
HEAT TRANSFER
LASERS
MATERIALS
OPENINGS
PERFORMANCE
SEALS
SOLAR COLLECTORS
SOLAR EQUIPMENT
WINDOWS
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
CARBON DIOXIDE LASERS
COVERINGS
DOUBLE GLAZING
ENERGY TRANSFER
EQUIPMENT
EVACUATED COLLECTORS
GAS LASERS
GLAZING
GLAZING MATERIALS
HEAT TRANSFER
LASERS
MATERIALS
OPENINGS
PERFORMANCE
SEALS
SOLAR COLLECTORS
SOLAR EQUIPMENT
WINDOWS