An Experimental Study of Natural Convection in a Toroidal Loop

Velocity and temperature profiles were measured at the entrance and exit to the heating section of a toroidal thermosyphon loop operating under steady flow conditions for a range of heat inputs. Velocity measurements were made with a laser-Doppler velocimeter and temperature measurements with a smal...

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Bibliographic Details
Published in:Journal of heat transfer 1988-11, Vol.110 (4A), p.877-884
Main Authors: Stern, C. H, Greif, R, Humphrey, J. A. C
Format: Article
Language:English
Subjects:
420400 - Engineering- Heat Transfer & Fluid Flow
ANNULAR SPACE
Applied sciences
CLOSED CONFIGURATIONS
CONFIGURATION
CONVECTION
COOLANT LOOPS
COOLING
COOLING SYSTEMS
DATA
Devices using thermal energy
Energy
ENERGY SYSTEMS
ENERGY TRANSFER
Energy. Thermal use of fuels
ENGINEERING
ENGINES
Exact sciences and technology
FLUID FLOW
GEOTHERMAL POWER PLANTS
Heat exchangers (included heat transformers, condensers, cooling towers)
HEAT TRANSFER
HEATING SYSTEMS
INFORMATION
MAGNETIC FIELD CONFIGURATIONS
MASS TRANSFER
MEASURING INSTRUMENTS
NATURAL CONVECTION
PERMAFROST
POWER PLANTS
REACTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SPACE
STEADY FLOW
TEMPERATURE DISTRIBUTION
TEMPERATURE MEASUREMENT
THERMAL POWER PLANTS
THERMOCOUPLES
TOROIDAL CONFIGURATION
VELOCIMETERS
VELOCITY
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Description
Summary:Velocity and temperature profiles were measured at the entrance and exit to the heating section of a toroidal thermosyphon loop operating under steady flow conditions for a range of heat inputs. Velocity measurements were made with a laser-Doppler velocimeter and temperature measurements with a small thermocouple probe. Detailed results are presented for the longitudinal and circumferential components of the velocity for four heat inputs. The data for cross-stream secondary flows and streamwise flow reversals emphasize the importance of including three-dimensional effects in analyses of these systems.
ISSN:0022-1481
1528-8943
DOI:10.1115/1.3250588