Accession Number:

ADA399454

Title:

Measuring Background Convectivity

Descriptive Note:

Conference Proceedings

Corporate Author:

TELEDYNE BROWN ENGINEERING HUNTSVILLE AL

Personal Author(s):

• Cox, Randy
• Fuentes, Roland

Report Date:

1998-12-01

Pagination or Media Count:

9.0

Abstract:

We have developed an instrument to measure the relative or absolute values of convection in some environment. The device eliminates or reduces the radiation and conduction effects between the itself and its environment so that essentially all of the heat lost by the it is lost by convection. When correlated with environmental data collected simultaneously with the measurements of the device performance, a coefficient of convection may be computed and displayed in real time. This coefficient is important in the understanding of natural heat transfer process in the environment, and how man-made objects subjected to that environment by react. In particular, we use the meter to help us determine the contribution of convection to the overall thermal balance of camouflage designed for military use. Herein, we describe in detail the device, its operating principles, and how the data it yields is used for better understanding of thermal signatures and the design of thermal camouflage.

Descriptors:

• *MEASURING INSTRUMENTS
• *CONVECTION(HEAT TRANSFER)
• THERMAL PROPERTIES
• HEAT TRANSFER
• RADIATION
• CAMOUFLAGE
• INSTRUMENTATION
• CONDUCTION(HEAT TRANSFER)
• HEAT LOSS

Subject Categories:

• Test Facilities, Equipment and Methods
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE