Thermal design of a miniature guarded hot plate apparatus

Conference · Fri Oct 31 23:00:00 EST 1997

OSTI ID:543459

Flynn, D R; Gorthala, R ^[1]

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1. DRF R and D, Inc., Millwood, VA (United States)

Under contract from the National Institute of Standards and Technology, the authors have developed a prototype design for a miniature guarded hot plate apparatus that can be used to determine the thermal resistance of very small specimens (1 to 3 cm square) of thermal insulation materials at temperatures from {minus}40 C to + 100 C, with the capability to carry out measurements in air, selected gases, or vacuum. The overall design approach for this apparatus has been published previously. In the present paper, the authors provide details concerning the thermal design of the apparatus, including discussions of heater designs to promote temperature uniformity of the hot plate, guard designs to control extraneous heat gains and losses, material selection for the components of the apparatus, and techniques for temperature measurements.

• OSTI ID: 543459
• Report Number(s): CONF-970582--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
DESIGN
R FACTORS
TEMPERATURE DISTRIBUTION
TEMPERATURE MEASUREMENT
TEST FACILITIES
THERMAL INSULATION
THERMAL TESTING