Natural-convection heat transfer of a spherical lighting fixture

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · Heat Transfer - Japanese Research; (United States)

OSTI ID:6957244

Ikeda, Takamasa; Fujii, Tetsu

The surface temperatures of the inner lamp and the outer globe of a spherical lighting fixture, the surfaces of which are painted black, were measured. From the results, the average convective heat-transfer coefficients between the inner lamp and the outer globe and on the outer surface of the globe were obtained. These data are correlated with the aid of existing equations for two concentric spheres and the outer surface of a single sphere. The relationships between the maximum and mean temperatures on the lamp and the globe were also obtained. By the use of these equations, a method for the optimal thermal design of spherical lighting fixtures is proposed.

• OSTI ID: 6957244
• Journal Information: Heat Transfer - Japanese Research; (United States), Vol. 22:8; ISSN 0096-0802
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
LIGHT BULBS
NATURAL CONVECTION
DESIGN
EQUATIONS
LIGHTING SYSTEMS
SPHERICAL CONFIGURATION
THERMAL ANALYSIS
CONFIGURATION
CONVECTION
ENERGY SYSTEMS
ENERGY TRANSFER
HEAT TRANSFER
MASS TRANSFER
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)